JP5283201B2 - Exhaust system temperature raising device, exhaust system extended temperature raising device, internal combustion engine filter regeneration device using the same, and internal combustion engine exhaust gas purification device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem in which a particulate filter cannot be sufficiently regenerated and it is difficult to prevent generation of white smoke and reduce white smoke, when an exhaust gas temperature is low. <P>SOLUTION: A temperature raising device 100 of an exhaust system and an extension temperature raising device 200 of an exhaust system, etc. continuously and stably form flames which are formed by burning fuel in an exhaust passage and are extremely smaller than flames in a conventional technique, form flames further amplified by using the above flames as the nucleuses, heat the exhaust passage by the flames to promote evaporation of fuel and activation of oxidation catalysts, for instance, regenerate the particulate filter or oxidize white smoke discharged from the particulate filter and reduce white smoke, surely operate regardless of an operation state of an internal combustion engine in the case, have high possibilities of having excellent energy saving and being easily afterwards mounted on the internal combustion engine, have high possibilities of having comparatively simple device constitutions and being miniaturized, have a possibility of reducing a cost, and are capable of extending a selection range of fuel when the oxidation catalysts are not used. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention belongs to the technical field of internal combustion engines, the exhaust system temperature raising device for raising the temperature of the exhaust passage of the internal combustion engine, the exhaust system extended temperature raising device, and a filter regeneration device for an internal combustion engine using the same, And an exhaust emission control device for an internal combustion engine.

  As an exhaust purification device that collects particulate matter (also referred to as particulate matter) contained in exhaust gas of an internal combustion engine, a particulate filter that collects particulate matter contained in exhaust gas is provided in the exhaust passage. Is known (see, for example, Patent Document 1 and Patent Document 2). In such an exhaust purification device, when the particulate filter is clogged, particulate matter collected by, for example, a burner or an electric heater is oxidized and burned, and thereby the particulate filter is removed from the internal combustion engine. I try to play without.

  On the other hand, Patent Documents 3 to 5 disclose an apparatus for regenerating a particulate filter using heat of exhaust gas of an internal combustion engine. Compared with the techniques of Patent Documents 1 and 2 described above, these techniques can save energy because the amount of fuel, electric energy, etc. received from the outside of the exhaust system is relatively small, and the configuration of the apparatus is compared. May be simple and small, and cost may be reduced. First, in Patent Document 3, a particulate filter is provided in an exhaust passage of a diesel engine equipped with a rail injection system, and post-injection is executed in an expansion stroke immediately after main injection by a fuel injection valve when the filter regeneration time comes. An exhaust emission control device is disclosed. In such an exhaust purification device, the combustion of the post-injected fuel accelerates the oxidation of the particulate matter collected in the particulate filter, removes the particulate matter from the particulate filter, and regenerates the particulate filter. Is done.

  Further, Patent Document 4 includes a burner device that includes a particulate filter in an exhaust pipe of a diesel engine, and injects and burns fuel upstream of the particulate filter so as to raise the temperature of the particulate filter. An exhaust purification device is disclosed. In such an exhaust purification device, oxidation of the particulate matter collected by the particulate filter is promoted by the temperature rise due to the combustion, particulate matter is removed from the particulate filter, and the particulate filter is Played. Patent Document 5 also discloses a similar technique.

Further, in Patent Document 6, a particulate filter that mainly collects particulate matter such as black smoke (soot) contained in the exhaust gas is provided in the exhaust passage of the internal combustion engine. From the particulate filter in the exhaust passage, Also disclosed is an exhaust gas purification apparatus for an internal combustion engine provided with an oxidation catalyst for promoting oxidation of a substance contained in exhaust gas by a catalytic reaction on the exhaust upstream side. In such an exhaust purification device, particulate matter contained in the exhaust gas is oxidized in the oxidation catalyst, and substances such as CO, HC, and SOF contained in the exhaust gas are oxidized to change into CO ₂ , water, etc. The exhaust gas is heated by this oxidation reaction, and the exhaust gas that has reached a high temperature flows into the particulate filter. Therefore, the oxidation of the particulate matter collected by the particulate filter is promoted, and the particulate filter removes the particulate matter from the particulate filter. The material is removed and the particulate filter is regenerated.

  Further, Patent Document 7 discloses an exhaust gas purification system for purifying exhaust gas of an internal combustion engine in which an oxidation catalyst and a DPF are provided in order from the exhaust upstream side in the exhaust passage of the internal combustion engine. Has disclosed an exhaust gas purification system for starting a white smoke prevention operation in which when the exhaust gas temperature in the engine is determined to be lower than a predetermined set value, the exhaust gas temperature adjusting means raises the exhaust gas to the activation temperature of the oxidation catalyst. . According to this exhaust gas purification system, white smoke prevention operation for preventing the generation of white smoke can be performed with high accuracy, and fuel consumption can be suppressed.

JP-A-2-185611 JP-A-10-131740 JP 2005-248964 A JP 2010-106728 A JP 2009-167950 A JP 2005-320880 A JP 2010-270690 A

  In this way, when the particulate filter is regenerated using the heat of the exhaust gas of the internal combustion engine, in order to promote the oxidation of the particulate matter collected by the particulate filter, the particulate filter It is necessary to keep the exhaust gas temperature at the filter inlet higher than a certain temperature (for example, a temperature around 600 ° C.). However, the exhaust gas temperature at the time of idling of the internal combustion engine or when the fuel supply is cut, such as at the time of deceleration of the internal combustion engine, is compared with the exhaust gas temperature when the internal combustion engine is loaded. Very low. Further, in the case of the techniques of Patent Documents 4 and 5, the fuel is ignited by the discharge terminal or the ceramic glow plug, but it is difficult to reliably ignite while being exposed to the exhaust gas flow, and depending on the operating conditions. Misfires occur frequently and cannot be stably burned. For this reason, in the case of the techniques disclosed in Patent Documents 3 to 5, combustion with post-injected fuel or fuel injected from a burner is not sufficiently performed, and white smoke may be generated by unburned fuel. Furthermore, in the case of the techniques of Patent Documents 6 and 7, if the exhaust gas temperature is low, the oxidation catalyst does not reach the activation temperature (for example, a temperature of about 250 ° C.), so the oxidation catalyst cannot obtain activity. . In the exhaust gas purification system disclosed in Patent Document 7, if the exhaust gas temperature is low and the oxidation catalyst does not reach the activation temperature, unburned fuel contained in the exhaust gas, or post-injected fuel or burner The fuel injected from the fuel accumulates in the oxidation catalyst or the particulate filter, and the fuel is discharged as white smoke from the oxidation catalyst or the particulate filter as the temperature of the exhaust gas rises. May be released. In the exhaust gas purification system disclosed in Patent Document 7, the oxidation catalyst and the DPF are provided in the exhaust passage of the internal combustion engine in order from the exhaust upstream side, but even if the oxidation catalyst is not present, When the exhaust gas temperature at the particulate filter inlet is low, unburned fuel contained in the exhaust gas, post-injected fuel or fuel injected from a burner, etc. accumulates in the particulate filter, and this fuel is the temperature of the exhaust gas. As it rises, it is discharged as white smoke from the particulate filter, and this white smoke may be released into the atmosphere. In that case, it is conceivable that an oxidation catalyst is provided on the exhaust gas downstream side of the particulate filter in the exhaust passage of the internal combustion engine, and the oxidation catalyst promotes the oxidation of white smoke discharged from the particulate filter. When the oxidation catalyst does not reach the activation temperature, the oxidation catalyst cannot obtain activity. That is, even if the techniques of Patent Documents 3 to 7 are introduced, and even if the proposal of providing an oxidation catalyst on the exhaust downstream side of the particulate filter is executed, when the exhaust gas temperature is low, the particulate filter It is difficult to prevent the generation of white smoke, or to oxidize and reduce the generated white smoke. Further, when using the techniques of Patent Documents 3 to 7, it is desired to save as much energy as possible. Furthermore, when using the technique of the said patent document 3 thru | or 7, when performing the retrofit provided in addition to the existing internal combustion engine, it is desired that construction is easy. In addition, since the technique of the said patent documents 1 thru | or 5 does not use the said oxidation catalyst, there exists an advantage that light oil and heavy oil with comparatively much sulfur content may be used as a fuel of the said internal combustion engine.

  The present invention has been made by paying attention to such points, and the object of the present invention is to produce a flame that is extremely small compared to a flame of the prior art formed by burning the fuel in the exhaust passage. It forms continuously and stably, and forms a flame in which the above-mentioned flame is the core and further amplifies it, thereby heating the exhaust passage, for example, promoting fuel vaporization, oxidation catalyst activity, Regenerate the particulate filter or oxidize and reduce the white smoke discharged from the particulate filter. In that case, it operates reliably regardless of the operating condition of the internal combustion engine, and is excellent in energy saving and easy to the internal combustion engine. Can be retrofitted, and the structure of the device is relatively simple and can be miniaturized. The cost can be reduced, and the range of fuel selection is widened when an oxidation catalyst is not used. Is to provide an enhanced temperature-raising device of the temperature increasing device and the exhaust system of the exhaust system becomes possible Rukoto. A further object of the present invention is to provide a filter regeneration device for an internal combustion engine that can regenerate the particulate filter by using the exhaust system temperature raising device or the exhaust system extended temperature raising device, and the particulate filter. An object of the present invention is to provide an exhaust emission control device for an internal combustion engine that can oxidize and reduce discharged white smoke.

In order to achieve the above object, the following inventions were made. First, a first exhaust system temperature increasing device of the present invention is an exhaust system temperature increasing device for increasing the temperature of an exhaust passage of an internal combustion engine,
Inside, a temperature raising member in which a temperature raising chamber opened to the outside by a discharge port formed at the peripheral edge of the peripheral surface is formed by a bottom surface and a peripheral surface rising from the periphery of the bottom surface;
A cylindrical housing member disposed outside the temperature raising member, connected to the temperature raising member so that one end is open to the bottom surface and closed at the other end;
One end is connected to the inside of the housing member, and liquid fuel piping to be supplied with liquid fuel;
It has a rod-like heat generating part that generates heat when energized, and the heat generating part protrudes from the inside of the housing member through the opening to the temperature raising chamber, and there is a gap over the entire circumference between the heat generating part and the housing member. A heating member provided in the housing member to be formed;
A gap is formed from the bottom surface to the vicinity of the tip of the heat generating portion, and a protrusion is formed between the protruding portion protruding into the temperature raising chamber in the heat generating portion, and a gap is formed between the bottom edge and the bottom surface. A cylindrical surrounding member provided on the temperature raising member so that
One end is connected to the temperature raising member so as to be introduced into the temperature raising chamber as an air outlet, and air piping to be supplied with air is provided.
When the liquid fuel is supplied from the liquid fuel pipe to the housing member, air is supplied from the air pipe to the temperature raising chamber, and the heating member is energized, the liquid fuel supplied to the housing member is The vaporized liquid fuel is heated and vaporized by the heat generating portion, and diffuses into the temperature rising chamber from between the tip of the heat generating portion and the edge on the opposite bottom side of the surrounding member, and from the air pipe. Mixing with air to produce a primary gas mixture, the primary gas mixture is heated by the heat generating portion and burns continuously, and the liquid fuel accumulated on the bottom surface is heated by the combustion heat of the primary gas mixture. The vaporized liquid fuel diffuses into the temperature raising chamber and mixes with the air from the air pipe to form a secondary gas mixture, which is heated by the combustion heat of the primary gas mixture. Being burned Uni an exhaust system temperature increasing device configured.

  When the exhaust system temperature raising device is provided in the exhaust passage of the internal combustion engine and the exhaust system temperature raising device is operated, the primary mixture and the secondary mixture burn to form a flame, and the combustion heat As a result, hot exhaust gas is formed in the exhaust passage. The exhaust passage is heated by the high-temperature exhaust gas. Therefore, for example, when the internal combustion engine is an internal combustion engine that supplies fuel to the exhaust passage on the exhaust upstream side of the particulate filter by the post injection or injection into the exhaust passage, the post injection or Vaporization of the fuel supplied to the exhaust passage is promoted by injection into the exhaust passage, whereby the particulate filter is regenerated. Further, for example, when the internal combustion engine is an internal combustion engine in which an oxidation catalyst and a particulate filter are sequentially provided in the exhaust passage from the upstream side of the exhaust, the activity of the oxidation catalyst is promoted and the exhaust passage is heated to a high temperature. Exhaust gas is formed, whereby the particulate filter is regenerated. Further, for example, when the internal combustion engine is an internal combustion engine in which a particulate filter and an oxidation catalyst are provided in the exhaust passage in order from the exhaust upstream side, a temperature raising member of the exhaust system is provided between them. The activation of the oxidation catalyst is promoted to form hot exhaust gas in the exhaust passage, whereby white smoke discharged from the particulate filter is oxidized and reduced.

  In that case, in the temperature raising member, the liquid fuel supplied to the housing member is heated and vaporized by the heat generating portion, and the vaporized liquid fuel is in contact with the tip of the heat generating portion and the surrounding member. It diffuses into the temperature raising chamber from between the edge on the opposite bottom side and mixes with the air from the air pipe to generate a primary gas mixture, and this primary gas mixture is heated by the heat generating part and continuously Because it burns, the fuel supplied by the post-injection or the injection into the exhaust passage is exposed to the exhaust gas flow, and the ignition is surely performed as compared with the case where the fuel is ignited by the discharge terminal or the ceramic glow plug. Misfire is prevented regardless of the conditions, stable combustion is continuously performed, and the flame is formed. Therefore, white smoke is not generated by unburned fuel. Further, the flame caused by the combustion of the primary air-fuel mixture can be formed on a very small scale as compared with the flame formed in the exhaust passage by the post injection or the injection into the exhaust passage. Small and excellent in energy saving. Further, since the temperature raising device for the exhaust system can operate without receiving information from the internal combustion engine, in such a case, it is highly possible that it can be easily retrofitted to the internal combustion engine. The structure is relatively simple and the possibility of miniaturization is high, and the possibility of cost reduction is high. Further, when an oxidation catalyst is not provided in the exhaust system temperature raising device, light oil or heavy oil having a relatively high sulfur content may be used as the fuel for the internal combustion engine. The temperature raising device for the exhaust system is suitable for a filter regeneration device for an internal combustion engine that can regenerate a particulate filter, which will be described later, and an exhaust purification device for an internal combustion engine that can oxidize and reduce generated white smoke. is there.

The second exhaust system temperature increasing device of the present invention is the first exhaust system temperature increasing device,
The air pipe is oriented so that the air outlet avoids the tip of the heat generating portion and an air swirl is formed in the temperature raising chamber.

  In this way, the air flow from the air outlet of the air pipe does not hit the tip of the heat generating part directly, so that the possibility of blowing off the flame formed near the tip of the heat generating part is reduced. In addition, since a swirling flow of air is formed in the temperature raising chamber, the vaporized liquid fuel and the air are well mixed to form the uniform primary mixture and the secondary mixture.

A third exhaust system temperature increasing device according to the present invention is the first or second exhaust system temperature increasing device,
A porous member is disposed on the bottom surface of the heating chamber.

  In this way, the retention of the liquid fuel is enhanced. Further, when the oxidation catalyst is supported on the porous member, the reforming reaction of the liquid fuel is performed by the action of the catalyst heated by the combustion heat of the primary gas mixture or the secondary gas mixture, thereby improving the combustibility. Since the quality fuel is generated, the combustion of the secondary mixture is promoted.

According to a fourth exhaust system temperature increasing device of the present invention, in any one of the first to third exhaust system temperature increasing devices,
The flow rate of the exhaust gas discharged from the temperature raising member is about 10% by weight or less of the flow rate of the exhaust gas discharged from the internal combustion engine during idle operation.

  This is an example of the flow rate of the exhaust gas discharged from the temperature raising member, but the flame formed in this case is compared with the flame formed in the exhaust passage by the post injection or the injection into the exhaust passage. It can be seen quantitatively that the scale is extremely small.

Next, the first exhaust system extended temperature raising device of the present invention is an extended exhaust system temperature raising device for raising the temperature of the exhaust passage of the internal combustion engine,
Any one of the first to fourth exhaust system temperature raising devices;
It is formed in a cylindrical shape having a subsequent heating chamber formed inside, an inlet for opening the subsequent heating chamber on the exhaust upstream side, and an outlet for opening the subsequent heating chamber on the exhaust downstream side. At least a portion on the discharge port side of the temperature raising member of the temperature raising device passes through and is hermetically connected to the peripheral wall, and a subsequent rise in which a reservoir is formed on the peripheral wall around the temperature raising member. A temperature member;
A subsequent liquid fuel pipe that is connected to the subsequent temperature raising member so that one end communicates with the reservoir, and to which the liquid fuel is supplied;
The liquid fuel is supplied from the liquid fuel pipe to the housing member, air is supplied from the air pipe to the temperature raising chamber, and the heating member is energized. Further, the subsequent liquid fuel pipe is supplied to the storage section. When the liquid fuel is supplied, the primary air-fuel mixture continuously burns in the temperature raising chamber and the secondary air-fuel mixture burns, and the liquid fuel supplied to the storage section becomes the primary air-fuel mixture and the secondary air-fuel mixture. The subsequent temperature rising member heated by the temperature raising member heated by the combustion heat of the air-fuel mixture is vaporized, and the vaporized liquid fuel is diffused into the subsequent temperature raising chamber and introduced from the inlet of the subsequent temperature raising member. Mixing with air from the exhaust gas upstream side of the greenhouse to form a tertiary gas mixture, and this tertiary gas mixture is heated by the temperature raising member heated by the combustion heat of the primary gas mixture and the secondary gas mixture. And, high-temperature exhaust gas generated by the combustion is exhaust system extended heating apparatus configured to be led out to the downstream side of exhaust gas from said outlet of said subsequent heating member.

A second exhaust system extended temperature raising device of the present invention is an exhaust system extended temperature raising device for raising the temperature of an exhaust passage of an internal combustion engine,
Any one of the first to fourth exhaust system temperature raising devices;
It is formed in a cylindrical shape having a subsequent heating chamber formed inside, an inlet for opening the subsequent heating chamber on the exhaust upstream side, and an outlet for opening the subsequent heating chamber on the exhaust downstream side. A subsequent temperature raising member in which at least a portion on the outlet side of the temperature raising member of the temperature raising device passes through and is hermetically connected to the peripheral wall;
An intermediate portion is provided on the exhaust downstream side of the subsequent temperature raising member so that heat exchange with the exhaust gas is possible, one end is connected to the subsequent temperature raising member so as to communicate with the subsequent temperature raising chamber, and the other end is A subsequent gas mixture line to be supplied with a mixture of liquid fuel and air;
The liquid fuel is supplied from the liquid fuel pipe to the housing member, air is supplied from the air pipe to the temperature raising chamber, and the heating member is energized. Further, the subsequent gas mixture pipe is supplied to the subsequent temperature raising chamber. When the air-fuel mixture is supplied, the primary air-fuel mixture continuously burns in the temperature raising chamber and the secondary air-fuel mixture burns, and the air-fuel mixture supplied to the subsequent temperature raising chamber diffuses into the subsequent temperature raising chamber. And mixed with air from the exhaust upstream side of the subsequent temperature raising chamber introduced from the inlet of the subsequent temperature raising member to generate a tertiary gas mixture, and the tertiary gas mixture is the primary gas mixture and the secondary gas mixture. Exhaust gas configured to be heated and combusted by the temperature raising member heated by the combustion heat of the exhaust gas, and high-temperature exhaust gas generated by the combustion is led out from the outlet of the subsequent temperature raising member to the exhaust downstream side Systematic It is a ChoNoboru-raising device.

  In both the first exhaust system extended temperature raising device and the second exhaust system extended temperature raising device, the exhaust system extended temperature raising device is provided in the exhaust passage of the internal combustion engine to expand the exhaust system. When the temperature raising device is operated, the primary mixture, the secondary mixture, and the tertiary mixture are combusted, and the combustion of the tertiary mixture forms a flame that is amplified more than the flame of the secondary mixture. Due to the combustion heat, higher-temperature exhaust gas is formed in the exhaust passage. The exhaust passage is strongly heated by the higher temperature exhaust gas. Therefore, for example, when the internal combustion engine is an internal combustion engine provided with a particulate filter in the exhaust passage, the particulate filter is regenerated. Further, for example, when the internal combustion engine is an internal combustion engine that supplies fuel to the exhaust passage upstream of the particulate filter by the post injection or injection into the exhaust passage, the post injection or Vaporization of the fuel supplied to the exhaust passage is promoted by injection into the exhaust passage, whereby the particulate filter is regenerated. Further, for example, when the internal combustion engine is an internal combustion engine in which an oxidation catalyst and a particulate filter are sequentially provided in the exhaust passage from the upstream side of the exhaust, the activity of the oxidation catalyst is promoted and the exhaust passage is heated to a high temperature. Exhaust gas is formed, whereby the particulate filter is regenerated. Further, for example, when the internal combustion engine is an internal combustion engine in which a particulate filter and an oxidation catalyst are provided in order from the exhaust upstream side in the exhaust passage, an extended temperature raising member of the exhaust system is provided therebetween. Thus, the activity of the oxidation catalyst is promoted to form high-temperature exhaust gas in the exhaust passage, whereby white smoke discharged from the particulate filter is oxidized and reduced.

  In that case, in the exhaust system temperature raising device, the above-described action, that is, ignition is reliably performed, misfire is prevented regardless of operating conditions, stable combustion is continuously performed, and the flame is Formed so that white smoke is not generated by unburned fuel, the fuel consumption rate is small and energy saving is superior to the case of performing the post injection or the injection into the exhaust passage, the internal combustion engine There is a high possibility that it can be easily retrofitted to the engine, and the structure of the apparatus is relatively simple, the possibility of being able to be reduced in size is high, and the possibility that the cost can be reduced is high. When the engine is not provided, the effect of using light oil or heavy oil having a relatively high sulfur content as fuel for the internal combustion engine can be used as it is. Moreover, even if other parts are excluded except for the exhaust system temperature raising device, the exhaust system extended temperature raising device has a fuel consumption rate higher than that in the case of performing the post injection or the injection into the exhaust passage. It is small and excellent in energy saving, and it is highly likely that it can be easily retrofitted to the internal combustion engine. In addition, the structure of the device is relatively simple and can be miniaturized, and the possibility of cost reduction is high. In addition, when the extended temperature raising device of the exhaust system is not provided with an oxidation catalyst, it is possible to use light oil or heavy oil having a relatively high sulfur content as fuel for the internal combustion engine. The exhaust system extended temperature raising device is suitable for an internal combustion engine filter regeneration device capable of regenerating a particulate filter, which will be described later, and an exhaust gas purification device for an internal combustion engine capable of oxidizing and reducing generated white smoke. It is. In the second exhaust system extended temperature raising device, the mixture of the liquid fuel and air is heated by heat exchange with the exhaust gas in the subsequent gas mixture piping, and the vaporization of the liquid fuel is promoted. Therefore, the generation of the tertiary mixture is promoted.

The third exhaust system extended temperature raising apparatus of the present invention is the above-described first or second exhaust system extended temperature raising apparatus,
Furthermore, one end communicates with the exhaust passage on the exhaust upstream side of the subsequent heating chamber, and has an additional air pipe to be supplied with air,
At least a part of the air from the exhaust upstream side of the subsequent heating chamber introduced from the inlet of the subsequent heating member is air supplied from the additional air pipe.

  In this way, even when the internal combustion engine is stopped, the tertiary mixture is generated, and the exhaust temperature raising device of the exhaust system can be operated.

Next, the filter regeneration device for an internal combustion engine of the present invention (hereinafter sometimes referred to as filter regeneration device A for an internal combustion engine for convenience)
In the internal combustion engine provided with a particulate filter for collecting particulate matter contained in the exhaust gas in the exhaust passage,
An exhaust temperature raising apparatus for any one of the first to third exhaust systems is provided such that the subsequent temperature raising member is disposed in the exhaust passage on the exhaust upstream side of the particulate filter,
High-temperature exhaust gas generated by the combustion of the exhaust system extended temperature raising device is guided to the particulate filter, and the exhaust gas promotes oxidation of particulate matter collected in the particulate filter by the exhaust gas. A filter regeneration device A for an internal combustion engine configured to regenerate a particulate filter.

Since the exhaust passage is strongly heated by the high-temperature exhaust gas, the particulate filter is regenerated.
When the exhaust filter regeneration device is not provided with an oxidation catalyst, light oil or heavy oil having a relatively high sulfur content may be used as the fuel for the internal combustion engine.

Next, the first internal combustion engine filter regeneration device of the present invention (hereinafter sometimes referred to as the internal combustion engine filter regeneration device B)
A particulate filter that collects particulate matter contained in the exhaust gas is provided in the exhaust passage, and supplementary fuel is supplied to the exhaust passage upstream of the particulate filter, and when the supplementary fuel burns, In a filter regeneration device for an internal combustion engine configured to regenerate the particulate filter by promoting oxidation of particulate matter collected by the particulate filter with high-temperature exhaust gas generated by combustion,
In any one of the first to fourth exhaust system temperature raising devices, at least a portion of the temperature raising member on the exhaust port side is upstream of the particulate filter and the supply portion of the supplementary fuel Provided to be disposed in the exhaust passage on the exhaust downstream side,
The supplementary fuel supplied to the exhaust passage is heated by the temperature raising device of the exhaust system to promote vaporization, and the vaporized supplementary fuel is mixed with air from the exhaust upstream side of the temperature raising device of the exhaust system. To produce a replenished mixture, which is heated by the exhaust system temperature raising device and combusted, and the high-temperature exhaust gas produced by the combustion is collected in the particulate filter. A filter regeneration device B for an internal combustion engine configured to regenerate the particulate filter by promoting oxidation of a substance.

Since the exhaust passage is heated by the high-temperature exhaust gas, the vaporization of the fuel supplied to the exhaust passage is promoted, and the particulate filter is regenerated by the oxidizing action of the fuel.
When the exhaust filter regeneration device is not provided with an oxidation catalyst, light oil or heavy oil having a relatively high sulfur content may be used as the fuel for the internal combustion engine.

A filter regeneration device B for a second internal combustion engine of the present invention comprises:
A particulate filter that collects particulate matter contained in the exhaust gas is provided in the exhaust passage, and supplementary fuel is supplied to the exhaust passage upstream of the particulate filter, and when the supplementary fuel burns, In a filter regeneration device for an internal combustion engine configured to regenerate the particulate filter by promoting oxidation of particulate matter collected by the particulate filter with high-temperature exhaust gas generated by combustion,
In any one of the first to third exhaust system extended temperature raising devices, the subsequent temperature raising member is located on the exhaust upstream side of the particulate filter and on the exhaust downstream side of the supplementary fuel supply site. Provided to be disposed in the exhaust passage,
The supplementary fuel supplied to the exhaust passage is heated by the extended temperature raising device of the exhaust system to promote vaporization, and the vaporized supplementary fuel is air from the exhaust upstream side of the extended temperature raising device of the exhaust system. To produce a supplementary gas mixture, which is heated by the extended temperature raising device of the exhaust system and combusted, and the high-temperature exhaust gas generated by this combustion is collected by the particulate filter. A filter regeneration device B for an internal combustion engine, wherein the particulate filter is regenerated by promoting oxidation of the particulate matter.

Since the exhaust passage is strongly heated by the high-temperature exhaust gas, vaporization of the fuel supplied to the exhaust passage is promoted, and the particulate filter is regenerated by the oxidizing action of the fuel.
When the exhaust filter regeneration device is not provided with an oxidation catalyst, light oil or heavy oil having a relatively high sulfur content may be used as the fuel for the internal combustion engine.

The third internal combustion engine filter regeneration device B of the present invention is the above-described first or second internal combustion engine filter regeneration device B.
In the exhaust passage between the temperature raising member or the subsequent temperature raising member and the particulate filter, a catalyst immediately before filter device provided with an oxidation catalyst for promoting oxidation of a substance contained in the exhaust gas by a catalytic reaction is provided. ing.

  In this way, the exhaust passage is heated by the high-temperature exhaust gas, so that the activation of the catalyst device immediately before the filter is promoted to form a high-temperature exhaust gas in the exhaust passage, whereby the exhaust passage. The particulate filter provided in is reproduced.

A filter regeneration device B for an internal combustion engine according to a fourth aspect of the present invention is the filter regeneration device B for an internal combustion engine according to any one of the first to third aspects.
Fuel is supplied to the exhaust passage upstream of the particulate filter by post injection.

  Since the exhaust passage is heated by the high-temperature exhaust gas, vaporization of the fuel supplied to the exhaust passage by the post injection is promoted, and the particulate filter is regenerated by the oxidizing action of the fuel.

A fifth internal combustion engine filter regeneration device B according to the present invention is the internal combustion engine filter regeneration device B according to any one of the first to third aspects.
Fuel supply to the exhaust passage upstream of the particulate filter is performed by fuel injection into the exhaust passage.

  Since the exhaust passage is heated by the high-temperature exhaust gas, vaporization of the fuel supplied to the exhaust passage is promoted by injection into the exhaust passage, and the particulate filter is regenerated by the oxidizing action of the fuel. The

Next, the first internal combustion engine filter regeneration device of the present invention (hereinafter sometimes referred to as the internal combustion engine filter regeneration device C for convenience)
A particulate filter for collecting particulate matter contained in the exhaust gas is provided in the exhaust passage, and oxidation of the substance contained in the exhaust gas is promoted by a catalytic reaction on the exhaust upstream side of the particulate filter in the exhaust passage. A catalytic device immediately before the filter provided with an oxidation catalyst is provided, and when the catalytic activity of the catalytic device immediately before the filter is obtained, the particulate matter collected on the particulate filter with the exhaust gas heated by the oxidation reaction of the material In a filter regeneration device for an internal combustion engine configured to promote oxidation and regenerate the particulate filter,
In any one of the first to fourth exhaust system temperature raising devices, at least a portion on the exhaust port side of the temperature raising member is disposed in the exhaust passage upstream of the catalyst immediately before the filter. Provided,
The catalyst device immediately before the filter is heated by the temperature raising device of the exhaust system, the catalytic activity of the catalyst device immediately before the filter is promoted, and is collected by the particulate filter with the exhaust gas heated by the oxidation reaction of the substance. A filter regeneration device C for an internal combustion engine, wherein the particulate filter is regenerated by promoting oxidation of particulate matter.

  Since the exhaust passage is heated by the high-temperature exhaust gas, the activation of the catalyst device immediately before the filter is promoted to form a high-temperature exhaust gas in the exhaust passage, thereby the partition provided in the exhaust passage. The curate filter is regenerated.

A filter regeneration device C for a second internal combustion engine of the present invention comprises:
A particulate filter for collecting particulate matter contained in the exhaust gas is provided in the exhaust passage, and oxidation of the substance contained in the exhaust gas is promoted by a catalytic reaction on the exhaust upstream side of the particulate filter in the exhaust passage. A catalytic device immediately before the filter provided with an oxidation catalyst is provided, and when the catalytic activity of the catalytic device immediately before the filter is obtained, the particulate matter collected on the particulate filter with the exhaust gas heated by the oxidation reaction of the material In a filter regeneration device for an internal combustion engine configured to promote oxidation and regenerate the particulate filter,
The exhaust temperature raising device of any one of the first to third is provided such that the subsequent temperature raising member is arranged in the exhaust passage upstream of the catalyst immediately before the filter,
The catalyst device immediately before the filter is heated by the extended temperature raising device of the exhaust system to promote the catalytic activity of the catalyst device immediately before the filter, and is collected by the particulate filter with the exhaust gas heated by the oxidation reaction of the substance. A filter regeneration device C for an internal combustion engine, wherein the particulate filter is regenerated by promoting oxidation of the particulate matter.

  Since the exhaust passage is strongly heated by the high-temperature exhaust gas, the activity of the catalytic device immediately before the filter is promoted to form a high-temperature exhaust gas in the exhaust passage, thereby being provided in the exhaust passage The particulate filter is regenerated.

An exhaust emission control device for a first internal combustion engine according to the present invention includes:
A particulate filter that collects particulate matter contained in the exhaust gas is provided in the exhaust passage, and oxidation of the substance contained in the exhaust gas is promoted by a catalytic reaction on the exhaust downstream side of the particulate filter in the exhaust passage. An exhaust gas purification device for an internal combustion engine provided with a filter rear catalyst device provided with an oxidation catalyst,
The temperature raising device for any one of the first to fourth exhaust systems is such that at least a portion of the temperature raising member on the exhaust port side is on the exhaust downstream side of the particulate filter and the filter rear catalyst device. Provided to be disposed in the exhaust passage on the exhaust upstream side,
The filter rear catalyst device is heated by the exhaust system temperature raising device to promote the catalytic activity of the filter rear catalyst device, and promote the oxidation of the substances contained in the exhaust gas discharged from the particulate filter by the catalytic reaction. An exhaust emission control device for an internal combustion engine configured as described above.

  Since the exhaust passage is heated by the high-temperature exhaust gas, the activity of the filter rear catalyst device is promoted to form a high-temperature exhaust gas, which is generated in the internal combustion engine and collected in the particulate filter. The white smoke discharged from the particulate filter is oxidized and reduced.

An exhaust emission control device for a second internal combustion engine of the present invention comprises:
A particulate filter that collects particulate matter contained in the exhaust gas is provided in the exhaust passage, and oxidation of the substance contained in the exhaust gas is promoted by a catalytic reaction on the exhaust downstream side of the particulate filter in the exhaust passage. An exhaust gas purification device for an internal combustion engine provided with a filter rear catalyst device provided with an oxidation catalyst,
The extended temperature raising device of any one of the first to third exhaust systems, wherein the subsequent temperature raising member is located on the exhaust downstream side of the particulate filter and on the exhaust upstream side of the filter rear catalyst device. Provided to be arranged in the exhaust passage,
The filter rear catalyst device is heated by the extended temperature raising device of the exhaust system, the catalytic activity of the filter rear catalyst device is promoted, and the oxidation of the substance contained in the exhaust gas discharged from the particulate filter is caused by a catalytic reaction. An exhaust emission control device for an internal combustion engine configured to promote.

  Since the exhaust passage is strongly heated by the high-temperature exhaust gas, the activity of the filter rear catalyst device is promoted to form a higher-temperature exhaust gas, which is generated in the internal combustion engine and generated by the particulate White smoke accumulated in the filter and discharged from the particulate filter is oxidized and reduced.

According to a third aspect of the present invention, there is provided an exhaust gas purification apparatus for an internal combustion engine according to the first or second internal combustion engine,
A catalyst device immediately before the filter is provided in the exhaust passage upstream of the particulate filter, which includes an oxidation catalyst that promotes oxidation of a substance contained in the exhaust gas by a catalytic reaction.

  In this way, when the catalyst device immediately before the filter has gained activity, the particulate filter is regenerated by the high-temperature exhaust gas that has passed through the catalyst device immediately before the filter.

  The temperature raising device for the first exhaust system of the present invention continuously and stably forms a very small flame as compared with a flame of the prior art formed by burning the fuel in the exhaust passage. By heating the exhaust passage by this exhaust system temperature raising device, for example, fuel vaporization, oxidation catalyst activity, etc. are promoted, the particulate filter is regenerated, or white smoke discharged from the particulate filter is oxidized. In that case, it operates reliably regardless of the operating condition of the internal combustion engine, has excellent energy savings, and can be easily retrofitted to the internal combustion engine, and the configuration of the apparatus is relatively simple. There is a high possibility that it can be reduced in size, there is a high possibility that the cost can be reduced, and it is possible to obtain an effect that it is possible to widen the selection range of the fuel when the oxidation catalyst is not used.

  The second exhaust system temperature raising device according to the present invention provides the effect obtained by the first exhaust system temperature raising device, and further prevents the flame from being blown out. By forming the primary gas mixture and the secondary gas mixture, continuous and stable formation of the flame can be more reliably realized.

  The third exhaust system temperature raising device according to the present invention provides the effect obtained by the first or second exhaust system temperature raising device, and further enhances the liquid fuel retention property to achieve the above effect. The secondary gas mixture can be stably generated, and the continuous and stable formation of the flame can be more reliably realized. Further, when the oxidation catalyst is supported on the porous member, combustion of the secondary mixture can be promoted by the reformed fuel.

  By using the fourth exhaust system temperature raising device of the present invention, the exhaust system temperature raising device of any one of the first to third examples is exemplified by the exhaust amount of the exhaust system temperature raising device. I was able to.

  The first or second exhaust system extended temperature raising apparatus according to the present invention continuously and stably generates a very small flame as compared with a conventional flame formed by burning the fuel in the exhaust passage. Since the flame is formed by using the above flame as a nucleus and further amplifying it, the exhaust passage is heated by the extended temperature raising device of the exhaust system. It is possible to promote, regenerate the particulate filter, or oxidize and reduce the white smoke discharged from the particulate filter, and in this case, it can operate reliably regardless of the operating condition of the internal combustion engine and save energy Excellent, likely to be easily retrofitted to the internal combustion engine, the device configuration is relatively simple and likely to be downsized, the cost is likely to be reduced, and no oxidation catalyst is used It is possible to obtain an effect that it becomes possible to widen the selection range of the fuel. Moreover, since the liquid fuel vaporization is promoted by heat exchange with the exhaust gas, the extended temperature raising device of the second exhaust system can promote the generation of the tertiary mixture.

  According to the third exhaust system extended temperature raising device of the present invention, the effect obtained by the first or second exhaust system extended temperature raising device can be obtained. In addition, the tertiary mixture is generated, and the exhaust temperature raising device can be operated.

  In the internal combustion engine filter regeneration device A of the present invention, the particulate filter can be strongly regenerated by the exhaust temperature raising device, and the fuel selection range can be expanded when an oxidation catalyst is not used. The effect of becoming can be obtained.

  The filter regeneration device B for the first internal combustion engine of the present invention promotes vaporization of the fuel supplied to the exhaust passage, so that the particulate filter can be regenerated and when an oxidation catalyst is not used. The effect that it becomes possible to expand the selection range of a fuel can be acquired.

  In the filter regeneration device B for the second internal combustion engine of the present invention, the fuel supplied to the exhaust passage is promoted to vaporize, so that the particulate filter can be strongly regenerated and an oxidation catalyst is used. When it is not, the effect that it is possible to widen the selection range of the fuel can be obtained.

  In the third internal combustion engine filter regeneration device B of the present invention, the effect obtained by the first or second internal combustion engine filter regeneration device B can be obtained. Since the oxidation is promoted, the particulate filter can be regenerated more strongly.

  The configuration for supplying fuel to the exhaust passage by the filter regeneration device B of the fourth or fifth internal combustion engine of the present invention could be specifically shown. Also with the internal combustion engine filter regeneration device B, the effect obtained by any one of the first to third internal combustion engine filter regeneration devices B can be obtained.

  The filter regeneration device C for the first internal combustion engine of the present invention can regenerate the particulate filter because the activity of the catalyst device immediately before the filter is promoted.

  The filter regeneration device C for the second internal combustion engine of the present invention can regenerate the particulate filter strongly because the activity of the catalyst device immediately before the filter is promoted.

  In the exhaust purification device for the first internal combustion engine of the present invention, the activity of the filter rear catalyst device is promoted, so that it is generated in the internal combustion engine, collected in the particulate filter, and discharged from the particulate filter. White smoke can be oxidized and reduced.

  In the exhaust purification device for the second internal combustion engine of the present invention, the activity of the filter rear catalyst device is promoted. White smoke can be strongly reduced by oxidizing.

  The third internal combustion engine exhaust gas purification apparatus of the present invention can obtain the effect obtained by the first or second internal combustion engine exhaust gas purification apparatus. Since it is promoted, the particulate filter can be regenerated.

FIG. 1 is a longitudinal sectional view showing an embodiment of an exhaust system temperature raising apparatus of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. 3 is a cross-sectional view taken along line III-III in FIG. The exhaust passage constituting member on the exhaust downstream side in which the diffusion plate is housed is omitted. FIG. 4 is an enlarged view of a main part of FIG. FIG. 5 is a longitudinal sectional view showing a first embodiment of the exhaust system extended temperature raising apparatus of the present invention. 6 is a cross-sectional view taken along line VI-VI in FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. The exhaust passage constituting member on the exhaust downstream side in which the diffusion plate is housed is omitted. FIG. 8 is an enlarged view of a main part of FIG. FIG. 9 is a longitudinal sectional view showing a second embodiment of the exhaust system extended temperature raising apparatus of the present invention. FIG. 10 is a longitudinal sectional view showing a third embodiment of the exhaust system extended temperature raising apparatus of the present invention. FIG. 11 is a longitudinal sectional view showing a fourth embodiment of the exhaust system extended temperature raising apparatus of the present invention. FIG. 12 is a longitudinal sectional view showing an embodiment of a filter regeneration device A for an internal combustion engine of the present invention. The particulate filter is not sectioned. In the following, in FIG. 12 to FIG. 26, a part of the exhaust passage is abbreviated by a virtual line. FIG. 13 is a longitudinal sectional view showing a first embodiment of a filter regeneration device B for an internal combustion engine of the present invention. The particulate filter is not sectioned. FIG. 14 is a longitudinal sectional view showing a second embodiment of the filter regeneration device B for an internal combustion engine of the present invention. The particulate filter is not sectioned. FIG. 15 is a longitudinal sectional view showing a third embodiment of a filter regeneration device B for an internal combustion engine of the present invention. The particulate filter is not sectioned. FIG. 16 is a longitudinal sectional view showing a fourth embodiment of a filter regeneration device B for an internal combustion engine of the present invention. The particulate filter is not sectioned. FIG. 17 is a longitudinal sectional view showing a fifth embodiment of a filter regeneration device B for an internal combustion engine of the present invention. The particulate filter and the catalyst device immediately before the filter are not cross-sectioned. FIG. 18 is a longitudinal sectional view showing a sixth embodiment of a filter regeneration device B for an internal combustion engine of the present invention. The particulate filter and the catalyst device immediately before the filter are not cross-sectioned. FIG. 19 is a longitudinal sectional view showing a seventh embodiment of the filter regeneration device B for an internal combustion engine of the present invention. The particulate filter and the catalyst device immediately before the filter are not cross-sectioned. FIG. 20 is a longitudinal sectional view showing an eighth embodiment of a filter regeneration device B for an internal combustion engine of the present invention. The particulate filter and the catalyst device immediately before the filter are not cross-sectioned. FIG. 21 is a longitudinal sectional view showing a first embodiment of a filter regeneration device C for an internal combustion engine of the present invention. The particulate filter and the catalyst device immediately before the filter are not cross-sectioned. FIG. 22 is a longitudinal sectional view showing a second embodiment of the filter regeneration device C for an internal combustion engine of the present invention. The particulate filter and the catalyst device immediately before the filter are not cross-sectioned. FIG. 23 is a longitudinal sectional view showing the first embodiment of the exhaust gas purification apparatus for an internal combustion engine of the present invention. The particulate filter and the filter rear catalyst device are not sectioned. FIG. 24 is a longitudinal sectional view showing a second embodiment of the exhaust gas purification apparatus for an internal combustion engine of the present invention. The particulate filter and the filter rear catalyst device are not sectioned. FIG. 25 is a longitudinal sectional view showing a third embodiment of the exhaust gas purification apparatus for an internal combustion engine of the present invention. The particulate filter, the filter rear catalyst device, and the catalyst device just before the filter are not sectioned. The catalyst device just before the filter is drawn small with the internal structure omitted. FIG. 26 is a longitudinal sectional view showing a fourth embodiment of the exhaust gas purification apparatus for an internal combustion engine of the present invention. The particulate filter, the filter rear catalyst device, and the catalyst device just before the filter are not sectioned. The catalyst device just before the filter is drawn small with the internal structure omitted.

  1 to 4 show an embodiment of a temperature raising device for an exhaust system of the present invention. For convenience of explanation, the flow of the exhaust gas is referred to as an exhaust flow, and the direction in which the exhaust gas flows is referred to as the direction of the exhaust flow. In these figures, reference numeral 100 denotes an exhaust system temperature raising device according to the above embodiment, and this exhaust system temperature raising device 100 includes a temperature raising member 110, and the temperature raising member 110 has a temperature raising member 110. A greenhouse 111 is formed. The temperature raising chamber 111 is formed by a bottom surface 112 and a peripheral surface 113 rising from the periphery of the bottom surface 112. The temperature raising chamber 111 is open to the outside at a discharge port 113 a formed at the periphery of the peripheral surface 113. In this embodiment, the temperature raising member 110 is formed in a bag shape having an opening, and the opening serves as the discharge port 113a. Further, in this embodiment, the temperature raising member 110 is formed in a cylindrical first member 110a whose both ends are closed by end walls, a cylindrical shape thinner than the first member 110a, and has no corners. The first member 110a has one end connected to one end wall of the first member 110a so as to communicate with the inside of the first member 110a, and the other end is opened as the discharge port 113a. Two members 110b. The bottom surface 112 is constituted by the inner surface of the other end wall of the first member 110a, and the inner surface of the other part excluding the other end wall of the first member 110a and the second member 110b. The peripheral surface 113 is constituted by the inner surface. The temperature raising member of the present invention may be formed in a bag shape having an opening, and the outer shape of the temperature raising member is not particularly limited by this embodiment. And the space formed in such a temperature rising member becomes the said temperature rising chamber of this invention. Therefore, in this embodiment, the temperature raising member 110 is constituted by two members having different shapes of the first member 110a and the second member 110b. However, the temperature raising member may be constituted by a single member. , You may comprise by three or more members.

  A cylindrical housing member 120 is disposed outside the temperature raising member 110. The housing member 120 is connected to the temperature raising member 110 so that one end 121 opens to the bottom surface 112 and the other end 122 is closed. Although the housing member 120 is formed in a straight tube shape, the housing member may be bent as long as at least a part of a heat generating portion of the heat generating member described later is accommodated in the housing member.

  A liquid fuel pipe 150 to which liquid fuel is supplied is connected to the housing member 120. One end of the liquid fuel pipe 150 is connected to the housing member 120 so as to communicate with the inside of the housing member 120.

  The housing member 120 is provided with a heat generating member 130. The heat generating member 130 includes a rod-shaped heat generating portion 132 that generates heat when energized. The heat generating member 130 is provided such that the heat generating portion 132 protrudes from the inside of the housing member 120 to the temperature raising chamber 111 through the opening 125 to the bottom surface 112 of the one end 121 of the housing member 120. The protruding portion forms a protruding portion 132a. The heat generating member 130 is provided in the housing member 120 such that a gap 123 is formed over the entire circumference between the heat generating portion 132 and the housing member 120. A fuel passage 124 through which liquid fuel passes is formed between the housing member 120 and the heat generating member 130. In the case of this embodiment, the heat generating member 130 is a glow plug. This glow plug is originally installed in the combustion chamber of the sub-chamber diesel engine where it comes into direct contact with the injected fuel. For example, when it is energized during cold start, it glows red and promotes fuel vaporization. It is. This glow plug becomes red hot within a few seconds after the start of energization. The glow plug used in this embodiment reached about 800 degrees Celsius in about 3 seconds after the start of energization, and the power consumption was about 90 to 100 W, and the maximum was about 160 W. However, this does not limit the interpretation of the glow plug or the heat generating member that is the subject of the present invention, and a glow plug with other performance may be used. The heat generating member 130 includes a rod-shaped main body 131, and the heat generating portion 132 is connected to one end of the main body 131, and is formed in a rod shape as a whole. The heat generating part 132 includes a metal tube and a heat generating element provided inside the metal tube. The heating element is a ceramic resistor, but may be a metal heating coil, for example. A terminal is provided at an end of the main body 131, and a current-carrying member that connects the heating element and the terminal is provided inside the main body 131. The heat generating elements and the energizing member are provided airtight to the outside of the heat generating member 130. As described above, in this embodiment, the glow plug as the diesel engine preheating device is used as the heat generating member 130. However, the heat generating member of the present invention has a rod-shaped heat generating portion that generates heat when energized at one end. Any other configuration may be used.

  The temperature raising member 110 is provided with a cylindrical surrounding member 140. In this embodiment, the surrounding member 140 is formed in a cylindrical shape. However, for example, the surrounding member 140 may be formed in another cylindrical shape such as a cylindrical shape having an inner surface and an outer surface that are elliptical when viewed from the extending direction of the tube, or a rectangular tube shape. Good. The surrounding member 140 rises from the bottom surface 112 to the vicinity of the tip 132aa of the heat generating part 132. As shown in FIG. 1, in the case of this embodiment, strictly speaking, when viewed from the direction orthogonal to the direction in which the surrounding member 140 rises, the end 144 on the opposite bottom side of the surrounding member 140 is the heat generating portion. The leading end 132aa of 132 is not reached. In other words, the tip 132aa of the heat generating part 132 protrudes to the opposite bottom side of the edge 144 on the opposite bottom side of the surrounding member 140. However, when viewed from the direction perpendicular to the direction in which the surrounding member rises, the edge on the opposite bottom side of the surrounding member may reach the tip of the heat generating portion and be the same height, or the heat generating portion It may be beyond the tip. In other words, the tip of the heat generating part may reach the opposite edge of the surrounding member on the side opposite to the bottom surface, and may have the same height, or closer to the bottom surface than the edge on the side opposite to the bottom surface of the surrounding member. There may be. Here, the bottom surface side of the specific member is a side close to the bottom surface 112 in the specific member, and the anti-bottom surface side of the specific member is a side far from the bottom surface 112 in the specific member. A gap 141 is formed over the entire circumference between the surrounding member 140 and the protruding portion 132 a protruding into the temperature raising chamber 111 in the heat generating portion 132. A gap 142 is formed between the bottom edge 143 of the surrounding member 140 and the bottom surface 112. The surrounding member 140 is connected to the bottom surface 112 at a part of the circumference of the edge 143 on the bottom surface side, and the gap 142 is formed by a portion other than the connected portion. In the case of this embodiment, the surrounding member 140 is formed with a protrusion extending toward the bottom surface 112 on a part of the circumference of the edge 143 on the bottom surface side. The gap 142 having a sufficient length in the circumferential direction is formed between the adjacent projections. If the dimension of the gap 142 along the direction in which the surrounding member 140 rises is set to, for example, 1 mm or less, it is preferable to form a stable flame by a primary gas mixture, which will be described later. Nonetheless, embodiments of the exhaust system temperature raising device in which the above dimensions are other numerical values are also included in the present invention. However, the shape of the surrounding member and the connection method to the temperature raising member are not limitedly interpreted by this embodiment. For example, the connection portion and the gap may be formed by spot welding a part of the circumference of the edge on the bottom surface side of the surrounding member to the bottom surface. You may form by. Further, for example, a gap may be formed over the entire circumference between the bottom edge of the surrounding member and the bottom surface, and at that time, the surrounding member is fixed to the temperature raising member by a stay, for example. May be.

  An air pipe 160 is connected to the temperature raising member 110. The air pipe 160 is connected to the temperature raising member 110 so that one end thereof is introduced into the temperature raising chamber 111 as an air outlet 161. In this embodiment, the air pipe 160 passes through the other end wall of the first member 110 a of the temperature raising member 110, and the one end projects into the temperature raising chamber 111. Air is supplied to the air pipe 160.

  The liquid fuel pipe 150 is connected to a fuel tank 195. The liquid fuel pipe 150 is provided with a first fuel pump 191, and a connection terminal to the power source of the first fuel pump 191 is connected to a battery 196 as a power source via an electric wire 192a. A battery of an internal combustion engine 300 described later may be shared as this battery. Although the fuel tank 195 contains light oil as the liquid fuel, there are cases where heavy oil, biofuel, or other fuels are also put as the liquid fuel. The fuel tank of the internal combustion engine 300 may be shared as this fuel tank. The controller of the first fuel pump 191 is electrically connected to the controller 170, and the operation of the first fuel pump 191 is controlled by the controller 170. The terminal of the main body 131 of the heat generating member 130 is connected to the battery 196 via an electric wire 192b. The electric switch 193 is provided on the electric wire 192b, and when the electric switch 193 is closed, the heat generating portion 132 is connected. The heating unit 132 is configured to generate heat when energized. The battery of the internal combustion engine 300 may be shared as this battery. The electric switch 193 is electrically connected to the controller 170, and the controller 170 controls the opening and closing of the electric switch 193. The air pipe 160 is connected to the discharge port of the first blower 194. A connection terminal to the power source of the first blower 194 is connected to the battery 196 as a power source via an electric wire 192c. The battery of the internal combustion engine 300 may be shared as this battery. The controller of the first blower 194 is electrically connected to the controller 170, and the operation of the first blower 194 is controlled by the controller 170. The temperature raising member 110 is provided with temperature sensors 181 and 182 for detecting the temperature of the temperature raising chamber 111, and output signals from the temperature sensors 181 and 182 are sent to the controller 170 via electric wires 192e and 192f, respectively. It has been sent. In this embodiment, two temperature sensors 181 and 182 are provided. The temperature sensors 181 and 182 are thermocouples, but may be other devices as long as the temperature can be detected. The first temperature sensor 181 is provided on the side of the edge 144 on the opposite bottom surface side of the surrounding member 140 and in the vicinity of the peripheral surface 113 of the heating chamber 111, and the second temperature sensor 182 The surrounding member 140 is provided at a position closer to the discharge port 113 a than the edge 144 on the opposite bottom side of the surrounding member 140 and in the vicinity of the peripheral surface 113 of the heating chamber 111. However, the number and positions of the temperature sensors provided in the temperature raising member are not limited by this embodiment. The controller 170 includes a CPU, memory, storage, or other storage device, and performs arithmetic processing on the transmitted signal and outputs a control signal. The controller 170 is an electronic control circuit unit, but a computer or the like may be used instead.

  The operation of the first fuel pump 191, the electric switch 193, and the first blower 194 is controlled by the controller 170 as follows. That is, when the liquid fuel is supplied from the liquid fuel pipe 150 to the housing member 120, air is supplied from the air pipe 160 to the temperature raising chamber 111 and the heating member 130 is energized, The supplied liquid fuel is heated and vaporized by the heat generating portion 132, and the vaporized liquid fuel is between the tip 132 aa of the heat generating portion 132 and the edge 144 on the opposite bottom side of the surrounding member 140. To the temperature raising chamber 111 and mixed with the air from the air pipe 160 to generate a primary gas mixture, which is heated by the heat generating part 132 and continuously burned, The accumulated liquid fuel is heated and vaporized by the combustion heat of the primary mixture, and the vaporized liquid fuel diffuses into the temperature raising chamber 111 and is Mixed with air from the air pipe 160 to produce a secondary mixture, the secondary air-fuel mixture is controlled to combustion is heated by the combustion heat of the primary mixture. In this case, the supply of the liquid fuel, the supply of air, and the like are controlled based on the signals from the temperature sensors 181 and 182 so that the temperature of the temperature raising chamber 111 does not exceed a predetermined temperature. Here, the controller 170 performs control based on the signals from the temperature sensors 181 and 182, but control may be performed without referring to the signal from the temperature sensor.

  As shown in FIG. 4, the housing member 120 has an area of the fuel passage 124 formed between the heat generating portion 132 and the housing member 120 at an opening 125 to the bottom surface 112 of the housing member 120. It is formed to be smaller than other parts. In the housing member of the present invention, the area of the fuel passage formed between the heat generating portion and the housing member is constant along the longitudinal direction of the heat generating portion, or the area is the above of the housing member. An embodiment in which the opening to the bottom surface is larger than other portions is included. However, according to this embodiment, the flow of the liquid fuel vaporized until reaching the vicinity of the opening to the bottom surface 112 of the housing member 120 is narrowed, and the flow of the heat generating portion 132 along the longitudinal direction. As a result, the flame is stably formed.

  As shown in FIG. 3, the air pipe 160 is oriented so that the air outlet 161 avoids the front end 132aa of the heat generating portion 132 and a swirling flow of air is formed in the temperature raising chamber 111. In the case of this embodiment, the air pipe 160 is provided on the upstream side of the exhaust flow from the surrounding member 140. The air pipe 160 extends in parallel with the direction in which the surrounding member 140 extends, extends from the surrounding member 140 to the opposite bottom side, and then bends in a direction orthogonal to the exhaust flow. The air outlet 161 is provided at the tip. However, the air outlet of the present invention may be directed in a direction different from the case of this embodiment.

  In this embodiment, nothing is placed on the bottom surface 112 of the heating chamber 111, but a porous member may be disposed on the bottom surface 112 of the heating chamber 111. In that case, an oxidation catalyst may be supported on the porous member. By doing so, the retention of the liquid fuel is enhanced. Further, when the oxidation catalyst is supported on the porous member, the reforming reaction of the liquid fuel is performed by the action of the catalyst heated by the combustion heat of the primary gas mixture or the secondary gas mixture, thereby improving the combustibility. Since the quality fuel is generated, the combustion of the secondary mixture is promoted.

  The exhaust system temperature raising device 100 is provided in the internal combustion engine 300. The internal combustion engine 300 is a known diesel engine having a reciprocating piston mechanism. The internal combustion engine 300 includes a cylinder and a piston slidably fitted into the cylinder, and a combustion chamber is formed on the top surface side of the piston in the cylinder. The internal combustion engine 300 is provided with an intake passage that has one end connected to the combustion chamber and the other end open to the atmosphere, and supplies fresh air to the combustion chamber. Further, the internal combustion engine 300 is provided with an exhaust passage 310 having one end connected to the combustion chamber and the other end open to the atmosphere, and leading the exhaust gas discharged from the combustion chamber to the outside. The exhaust passage 310 is constituted by a series of internal passages of a plurality of exhaust passage constituent members such as an exhaust manifold and an exhaust pipe from the side close to the cylinder. The combustion method is a direct injection type, and a common rail injection system is adopted. That is, fuel that has been made high pressure by the supply pump is stored inside a rail as an accumulator, and an appropriate injection amount is injected into the combustion chamber of each cylinder from an injector provided in the cylinder head in a timely manner under ECU control. I have to. The ECU control is performed by the fuel injection controller 320. However, the internal combustion engine of the present invention is not limitedly interpreted by the internal combustion engine 300 of this embodiment. The internal combustion engine which is the subject of the present invention may be an internal combustion engine in which fuel pressurized by a mechanical fuel injection pump is injected into the combustion chamber from an injector provided in a cylinder head. Further, it may be an internal combustion engine such as a sub-chamber type (pre-combustion chamber type / vortex chamber type) diesel engine, or an internal combustion engine such as a diesel engine that performs fuel injection by a unit injector type or the like. Good. The internal combustion engine that is the subject of the present invention includes, for example, a rotary engine, and also includes, for example, a gasoline engine in which fuel is directly injected into a cylinder. The internal combustion engine that is the subject of the present invention includes an internal combustion engine that is mounted on an automobile or other transportation equipment, and an internal combustion engine that is stationary on a site as exemplified by an internal combustion engine for driving a power generator. The internal combustion engine 300 includes at least the following four internal combustion engines. The first is an internal combustion engine in which a particulate filter for collecting particulate matter contained in the exhaust gas is provided in the exhaust passage. Second, the particulate filter is provided in the exhaust passage, and supplementary fuel is supplied to the exhaust passage upstream of the particulate filter by post injection, fuel injection into the exhaust passage, and the like. An internal combustion engine configured to regenerate the particulate filter by promoting oxidation of particulate matter collected by the particulate filter when high-temperature exhaust gas generated by the combustion is burned, Further, an internal combustion engine provided with a catalytic device immediately before a filter provided with an oxidation catalyst that promotes oxidation of a substance contained in exhaust gas by catalytic reaction in the exhaust passage between the portion for supplying supplementary fuel and the particulate filter It is. Third, a particulate filter that collects particulate matter contained in the exhaust gas is provided in the exhaust passage, and oxidation of the substance contained in the exhaust gas is performed upstream of the particulate filter in the exhaust passage. The catalyst device immediately before the filter is provided with an oxidation catalyst that promotes the catalytic reaction, and when the catalytic activity of the catalyst device immediately before the filter is obtained, the exhaust gas heated by the oxidation reaction of the substance is collected in the particulate filter. An internal combustion engine configured to promote the oxidation of the particulate matter and regenerate the particulate filter. Fourth, a particulate filter that collects particulate matter contained in the exhaust gas is provided in the exhaust passage, and oxidation of the substance contained in the exhaust gas is performed downstream of the particulate filter in the exhaust passage. An internal combustion engine provided with a filter rear catalyst device provided with an oxidation catalyst that promotes oxidation by a catalytic reaction, and further, in the exhaust passage upstream of the particulate filter, catalyzes the oxidation of substances contained in the exhaust gas It is an internal combustion engine provided with a catalyst device immediately before a filter provided with an oxidation catalyst promoted by reaction.

  The temperature raising device 100 for the exhaust system is provided in an exhaust passage constituting member 311 that constitutes a part along the direction in which exhaust gas flows in the exhaust passage 310 of the internal combustion engine 300. The exhaust passage constituting member 311 is formed in a cylindrical shape, and a part of the exhaust passage 310 is formed inside the exhaust passage constituting member 311. A part of the exhaust passage 310 opens to the exhaust upstream side and the exhaust downstream side. In the exhaust system temperature increasing device 100, at least a portion of the exhaust system temperature increasing device 100 on the exhaust port 113 a side passes through the exhaust passage structure member 311 and the exhaust passage structure member 311. It is provided to be introduced into 310. The portion introduced into the exhaust passage 310 in the exhaust system temperature raising device 100 constitutes the introduction portion 101. The introduction part 101 is constituted by the temperature raising member 110 of the exhaust temperature raising device 100. In the case of this embodiment, the introduction part 101 is constituted by a second member 110b of the temperature raising member 110 and a portion of the first member 110a on the second member side. In that case, the flow rate of the exhaust gas discharged from the temperature raising member 110 is about 10% by weight or less of the flow rate of the exhaust gas discharged from the internal combustion engine 300 during the idling operation. However, this is merely an example, and embodiments in which the flow rate of the exhaust gas discharged from the temperature raising member shows other numerical values are also included in the present invention. The flow rate of the exhaust gas discharged from the temperature raising member is not limitedly interpreted. A diffusion plate 102 is provided on the exhaust passage constituting member 311 on the exhaust downstream side of the exhaust port 113a of the temperature raising device 100 of the exhaust system so as to face the exhaust flow from the exhaust port 113a. A space is formed around the diffusion plate 102 in the exhaust passage constituting member 311, and the exhaust passage 310 at this portion is formed by this space. In the case of this embodiment, the diffusion plate 102 is formed by a circular plate that is slightly smaller than the shape of the exhaust passage constituting member that houses the diffusion plate 102 when viewed from the direction of the exhaust flow. As seen from the direction of the exhaust flow, stays extend from the left and right edges to the left and right, respectively, and these stays are welded to the inner walls of the exhaust passage constituting member. The diffusion plate may be attached, for example, by attaching the stay to the exhaust passage constituting member with a bolt or the like, or sandwiching the stay between the exhaust passage constituting member and an adjacent exhaust passage constituting member with a bolt or the like. The configuration of the diffusion plate or the configuration of the mounting structure is not limitedly interpreted by this embodiment. The exhaust system temperature raising device of the present invention includes an embodiment in which such a diffusion plate is not provided.

  Accordingly, when the exhaust system temperature increasing device 100 of the embodiment is provided in the exhaust passage 310 of the internal combustion engine 300 and the exhaust system temperature increasing device 100 is operated, the primary mixture and the secondary mixture are generated. A flame is formed by combustion, and hot exhaust gas is formed in the exhaust passage 310 by the combustion heat. The exhaust passage 310 is heated by the high-temperature exhaust gas. Therefore, for example, when the internal combustion engine 300 is an internal combustion engine configured to supply fuel to the exhaust passage 310 upstream of the particulate filter by the post injection or the injection into the exhaust passage 310, The vaporization of the fuel supplied to the exhaust passage 310 is promoted by the post injection or the injection into the exhaust passage 310, whereby the particulate filter is regenerated. For example, when the internal combustion engine 300 is an internal combustion engine in which an oxidation catalyst and a particulate filter are sequentially provided in the exhaust passage 310 from the exhaust upstream side, the activity of the oxidation catalyst is promoted and the exhaust passage 310 is accelerated. A high-temperature exhaust gas is formed on the particulate filter, thereby regenerating the particulate filter. Further, for example, when the internal combustion engine 300 is an internal combustion engine in which a particulate filter and an oxidation catalyst are sequentially provided in the exhaust passage 310 from the exhaust upstream side, the exhaust system temperature raising member 100 is interposed between them. By providing, the activity of the oxidation catalyst is promoted, and high-temperature exhaust gas is formed in the exhaust passage 310, whereby white smoke discharged from the particulate filter is oxidized and reduced.

  In this case, the liquid fuel supplied to the housing member 120 is heated and vaporized by the heat generating part 132 inside the temperature raising member 110, and the vaporized liquid fuel is the tip 132 aa of the heat generating part 132. And the edge 144 on the opposite bottom side of the surrounding member 140 to diffuse into the temperature raising chamber 111 and mix with the air from the air pipe 160 to generate a primary mixture, which is the primary mixture Compared with the case where the fuel supplied by the post injection or the injection into the exhaust passage is ignited by the discharge terminal or the ceramic glow plug while being heated by the heat generating portion 132 and continuously combusted. Thus, ignition is reliably performed, misfire is prevented regardless of operating conditions, stable combustion is continuously performed, and the flame is formed. Therefore, white smoke is not generated by unburned fuel. Further, since the flame caused by the combustion of the primary air-fuel mixture can be formed on a very small scale as compared with the flame formed in the exhaust passage 310 by the post injection or the injection into the exhaust passage, the fuel consumption rate Is small and excellent in energy saving. Further, since the exhaust system temperature raising device 100 can operate without receiving information from the internal combustion engine 300 such as the rotational speed of each part of the internal combustion engine 300, for example, There is a high possibility that the engine 300 can be easily retrofitted, and there is a high possibility that the configuration of the apparatus is relatively simple and can be reduced in size, and the cost can be reduced. Further, when an oxidation catalyst is not provided in the exhaust system temperature raising device 100, light oil or heavy oil having a relatively high sulfur content may be used as the fuel for the internal combustion engine 300. The exhaust system temperature raising device 100 includes an internal combustion engine filter regeneration device A, an internal combustion engine filter regeneration device B, or an internal combustion engine filter regeneration device C that can regenerate a particulate filter, which will be described later. It is suitable for an exhaust gas purification device for an internal combustion engine that can oxidize and reduce smoke.

  In the exhaust system temperature raising device of the present invention, the air pipe is connected to the temperature raising member so that one end is introduced into the temperature raising chamber as an air outlet, and air is supplied to the air pipe. What is necessary is just to be comprised. However, among the exhaust system temperature increasing devices of the various embodiments, in the exhaust system temperature increasing device 100 of the above embodiment, the air pipe 160 and the air outlet 161 are the tips of the heat generating portions 132. It is directed to avoid 132aa and to form a swirling air flow in the temperature raising chamber 111. In this case, since the air flow from the air outlet 161 of the air pipe 160 does not directly hit the tip 132aa of the heat generating part 132, the flame formed near the tip 132aa of the heat generating part 132 may be blown out. Decrease. In addition, since a swirling flow of air is formed in the heating chamber 111, the vaporized liquid fuel and the air are well mixed to form the uniform primary mixture and the secondary mixture.

  In the temperature raising device for the exhaust system of the present invention, the flow rate of the exhaust gas discharged from the temperature raising member is not limited quantitatively. However, among the exhaust system temperature increase devices of the various embodiments, in the exhaust system temperature increase device 100 of the above embodiment, the flow rate of the exhaust gas discharged from the temperature increase member 110 is an idle operation. And about 10% by weight or less of the flow rate of the exhaust gas discharged from the internal combustion engine 300 at the time. This is an example of the flow rate of the exhaust gas discharged from the temperature raising member 110. In this case, the flame formed in the exhaust passage is formed by the post injection or the injection into the exhaust passage 310. It can be seen quantitatively that the scale is extremely small compared to.

  5 to 8, reference numeral 200 denotes the exhaust system extended temperature raising apparatus of the first embodiment. The exhaust system temperature rising device 200 of the first embodiment is configured using the exhaust system temperature increasing device 100 of the above embodiment. Further, the exhaust system temperature rising device 200 of the first embodiment can be configured by using the modified example of the embodiment and the exhaust system temperature increasing device 100 according to the various embodiments. . Accordingly, as an explanation of the exhaust temperature raising device 100 in the exhaust temperature expansion temperature raising device 200 of the first embodiment, the exhaust gas according to the above-described embodiment and its modified examples and the various embodiments described above. The configuration of the system heating device 100 will be quoted as it is.

  The exhaust system temperature rising device 200 includes the exhaust system temperature increasing device 100, and further includes a subsequent temperature increasing member 210. The subsequent temperature raising member 210 is formed in a cylindrical shape. A subsequent heating chamber 211 is formed inside the subsequent heating member 210. The subsequent temperature raising member 210 has an inlet 212 for opening the subsequent temperature raising chamber 211 on the exhaust upstream side and an outlet 213 for opening the subsequent temperature raising chamber 211 on the exhaust downstream side. The peripheral wall 214 of the subsequent temperature raising member 210 is penetrated by the portion of the introduction portion 101 of the exhaust temperature raising device 100 on the side of the discharge port 113a. A storage portion 215 is formed around the root 4 of the penetration portion of the introduction portion 101 in the peripheral wall 214. In the case of this embodiment, the subsequent temperature raising member 210 is provided with a cylindrical first member 210a and an exhaust upstream side of the first member 210a, and a cylindrical first member having a smaller diameter than the first member 210a. A second member 210b, and a cylindrical third member 210c provided on the exhaust downstream side of the first member 210a and having a diameter smaller than that of the first member 210a. The opening on the exhaust upstream side of the first member 210a is closed on the outer peripheral side, and the second member 210b is connected to the reduced opening. Further, the opening on the exhaust downstream side of the first member 210a is closed on the outer peripheral side, and the second member 210b penetrates and is connected to the reduced opening. An opening on the exhaust upstream side of the second member 210b constitutes the inlet 212, and an opening on the exhaust downstream side of the third member 210c constitutes the outlet 213. And the part by the side of the said discharge port 113a of the said introducing | transducing part 101 of the said temperature raising apparatus 100 of the said exhaust system penetrates the surrounding wall 214 of the said 1st member 210a, and is airtightly connected to the said surrounding wall 214, The discharge port 113a of the temperature raising member 110 is inserted into an opening on the exhaust upstream side of the third member 210c, and a sufficient space is secured between the opening and the discharge port 113a. However, the configuration of the subsequent temperature raising member of the present invention is not limitedly interpreted by this embodiment, and the subsequent temperature raising member includes a subsequent temperature raising chamber formed inside, and the subsequent temperature raising chamber on the exhaust upstream side. It is formed in a cylindrical shape having an inlet for opening and an outlet for opening the subsequent temperature raising chamber to the exhaust downstream side, and at least a portion on the outlet side of the temperature raising member of the temperature raising device of the exhaust system penetrates the peripheral wall. Thus, it is only necessary that the peripheral wall is hermetically connected and a reservoir is formed on the peripheral wall around the temperature raising member.

  A subsequent liquid fuel pipe 230 is connected to the subsequent temperature raising member 210. The subsequent liquid fuel pipe 230 is connected to the subsequent temperature raising member 210 so that one end thereof communicates with the storage portion 215. Then, the liquid fuel is supplied to the subsequent liquid fuel pipe 230. That is, the subsequent liquid fuel pipe 230 is connected to the fuel tank 195. The subsequent liquid fuel pipe 230 is provided with a second fuel pump 291, and a connection terminal to the power source of the second fuel pump 291 is connected to the battery 196 via an electric wire 192 d. A battery of an internal combustion engine 300 described later may be shared as this battery. Although the fuel tank 195 contains light oil as the liquid fuel, there are cases where heavy oil, biofuel, or other fuels are also put as the liquid fuel. The fuel tank of the internal combustion engine 300 may be shared as this fuel tank. The controller of the second fuel pump 291 is electrically connected to the controller 170, and the operation of the second fuel pump 291 is controlled by the controller 170.

  The controller 170 controls the operations of the first fuel pump 191, the electric switch 193, the first blower 194, and the second fuel pump 291 as follows. That is, the liquid fuel is supplied from the liquid fuel pipe 150 to the housing member 120, air is supplied from the air pipe 160 to the temperature raising chamber 111, and the heating member 130 is energized. When the liquid fuel is supplied from the pipe 230 to the storage unit 215, the primary mixture is continuously burned in the temperature rising chamber 111 and the secondary mixture is burned, and further supplied to the storage unit 215. The liquid fuel is heated and vaporized by the temperature raising member 110 heated by the combustion heat of the primary gas mixture and the secondary gas mixture, and the vaporized liquid fuel diffuses into the subsequent temperature raising chamber 211 and the subsequent Mixing with the air from the exhaust upstream side of the subsequent heating chamber 211 introduced from the inlet 212 of the heating member 210 to generate a tertiary mixture, this tertiary The aerated gas is heated and burned by the temperature raising member 110 heated by the combustion heat of the primary gas mixture and the secondary gas mixture, and the high-temperature exhaust gas generated by the combustion is heated by the subsequent temperature raising member 210. It is controlled so as to be led out from the outlet 213 to the exhaust downstream side. Air from the exhaust upstream side of the subsequent heating chamber 211 is air contained in the exhaust gas discharged from the internal combustion engine 300. In this case, the supply of the liquid fuel, the supply of air, and the like are controlled based on the signals from the temperature sensors 181 and 182 so that the temperature of the temperature raising chamber 111 does not exceed a predetermined temperature. Here, the controller 170 performs control based on the signals from the temperature sensors 181 and 182, but control may be performed without referring to the signal from the temperature sensor.

  The exhaust system extended temperature raising device 200 is provided in the internal combustion engine 300. As the description of the internal combustion engine 300, the description of the internal combustion engine 300 in the exhaust system temperature increasing device 100 according to the above embodiment is referred to as it is.

  The exhaust temperature increasing device 200 for the exhaust system is provided in an exhaust passage constituting member 312 that constitutes a part along the direction in which the exhaust gas flows in the exhaust passage 310 of the internal combustion engine 300. The exhaust passage constituting member 312 is formed in a cylindrical shape, and a part of the exhaust passage 310 is formed inside the exhaust passage constituting member 312. A part of the exhaust passage 310 opens to the exhaust upstream side and the exhaust downstream side. The exhaust-system extended temperature increasing device 200 is provided in the exhaust passage constituting member 312 such that the subsequent temperature raising member 210 is disposed inside the exhaust passage constituting member 312. The exhaust system temperature rising device 200 is provided such that the subsequent temperature raising member 210 is disposed in the exhaust passage 310. In that case, the inlet 212 of the subsequent temperature raising member 210 is arranged so as to face the exhaust upstream side of the exhaust passage 310, and the outlet 213 faces the exhaust downstream side of the exhaust passage 310. Therefore, the exhaust system temperature increasing device 100 included in the exhaust system extended temperature increasing device 200 has at least a portion on the exhaust port 113a side passing through the exhaust path constituting member 312 in the exhaust path 310. Arranged to be introduced. In that case, the flow rate of the exhaust gas discharged from the temperature raising member 110 is about 10% by weight or less of the flow rate of the exhaust gas discharged from the internal combustion engine 300 during the idling operation. However, this is merely an example, and embodiments in which the flow rate of the exhaust gas discharged from the temperature raising member shows other numerical values are also included in the present invention. The flow rate of the exhaust gas discharged from the temperature raising member is not limitedly interpreted. A diffuser plate 201 is provided on the exhaust passage constituting member 312 on the exhaust downstream side of the outlet 213 of the exhaust temperature increasing device 200 of the exhaust system so as to face the exhaust flow from the outlet 213. A space is formed around the diffusion plate 201 in the exhaust passage constituting member 312, and the exhaust passage 310 is formed in this portion by this space. In the case of this embodiment, the diffusion plate 201 is formed of a circular plate that is slightly smaller than the shape of the exhaust passage constituent member that houses the diffusion plate 201 when viewed from the direction of the exhaust flow. As seen from the direction of the exhaust flow, stays extend from the left and right edges to the left and right, respectively, and these stays are welded to the inner walls of the exhaust passage constituting member. The diffusion plate may be attached, for example, by attaching the stay to the exhaust passage constituting member with a bolt or the like, or sandwiching the stay between the exhaust passage constituting member and an adjacent exhaust passage constituting member with a bolt or the like. The configuration of the diffusion plate or the configuration of the mounting structure is not limitedly interpreted by this embodiment. The exhaust system extended temperature raising device of the present invention includes an embodiment in which such a diffusion plate is not provided.

  FIG. 9 shows a second embodiment of the exhaust system extended temperature raising apparatus of the present invention. The exhaust system extended temperature raising apparatus 200 of the second embodiment is partially different from the exhaust system extended temperature increase apparatus 200 of the first embodiment. Therefore, as an explanation of the exhaust system extended temperature raising device 200 of the second embodiment, the first embodiment and its modified examples, and the exhaust system extended temperature rise device 200 according to the various embodiments described above. Are quoted as they are, and only different configurations will be described. The exhaust system temperature increasing device 200 of the second embodiment is configured by using the exhaust system temperature increasing device 100 of the above embodiment. Further, the exhaust system temperature rising device 200 of the second embodiment can be configured by using the modified example of the embodiment and the exhaust system temperature increasing device 100 according to the various embodiments. . Therefore, as an explanation of the exhaust system temperature raising device 100 in the exhaust system extended temperature raising device 200 of the second embodiment, the exhaust gas according to the above-described embodiment and its modifications, and the various embodiments described above. The configuration of the system heating device 100 will be quoted as it is.

  The exhaust system extended temperature raising apparatus 200 of the second embodiment also includes the subsequent temperature raising member 210. The subsequent heating member 210 includes the subsequent heating chamber 211 formed therein, the inlet 212 that opens the subsequent heating chamber 211 on the exhaust upstream side, and the outlet that opens the subsequent heating chamber 211 on the exhaust downstream side. 213 is formed in a cylindrical shape, and at least a portion on the discharge port 113a side of the temperature raising member 110 of the temperature raising device 100 of the exhaust system passes through the circumferential wall 214 and is hermetically connected to the circumferential wall 214. doing. In the subsequent temperature raising member 210 of the extended temperature raising device 200 for the exhaust system of the first embodiment, the storage portion 215 is formed on the peripheral wall 214 around the temperature raising member 110. Such a storage portion is not provided in the subsequent temperature raising member 210 of the exhaust temperature expansion temperature raising device 200 of the embodiment. However, the storage section may be provided also in the exhaust system extended temperature raising apparatus 200 of the second embodiment.

  The succeeding temperature raising member 210 of the exhaust system extended temperature raising device 200 of the first embodiment is provided with the subsequent liquid fuel pipe 230, but the exhaust system extended temperature rise of the second embodiment is not provided. The succeeding temperature raising member 210 of the temperature device 200 is not provided with such a succeeding liquid fuel pipe. The exhaust system extended temperature raising apparatus 200 of the second embodiment is provided with a subsequent gas mixture pipe 240. The subsequent mixture pipe 240 is a pipe having excellent thermal conductivity. The subsequent gas mixture piping 240 is provided on the exhaust downstream side of the subsequent temperature raising member 210 so that a midway portion thereof can exchange heat with the exhaust gas. In that case, the area of the subsequent mixture pipe 240 is sufficiently smaller than the passage area of the exhaust passage 310 in the direction of the exhaust flow. The subsequent gas mixture pipe 240 is connected to the subsequent temperature raising member 210 so that one end thereof communicates with the subsequent temperature raising chamber 211, and the other end is supplied with the mixture of the liquid fuel and air. . Then, the mixture of the liquid fuel and the air supplied from the other end of the subsequent mixture pipe 240 becomes a mixture of the liquid fuel and the air by heat absorbed by heat exchange with the exhaust gas. The subsequent gas mixture piping 240 is supplied from the one end to the subsequent heating chamber 211. In this embodiment, the first pipe 241 and the second pipe 242 are joined and connected to the other end of the subsequent air-fuel mixture pipe 240. The first pipe 241 is connected to the fuel tank 195. The first pipe 241 is provided with a third fuel pump 292, and a connection terminal to the power source of the third fuel pump 292 is connected to the battery 196 through an electric wire 192g. The battery of the internal combustion engine 300 may be shared as this battery. Although the fuel tank 195 contains light oil as the liquid fuel, there are cases where heavy oil, biofuel, or other fuels are also put as the liquid fuel. The fuel tank of the internal combustion engine 300 may be shared as this fuel tank. The controller of the third fuel pump 292 is electrically connected to the controller 170, and the operation of the third fuel pump 292 is controlled by the controller 170. The second pipe 242 is connected to the discharge port of the second blower 293. A connection terminal to the power source of the second blower 293 is connected to the battery 196 as a power source via an electric wire 192h. The battery of the internal combustion engine 300 may be shared as this battery. The controller of the second blower 293 is electrically connected to the controller 170, and the operation of the second blower 293 is controlled by the controller 170.

  The controller 170 controls the operations of the first fuel pump 191, the electrical switch 193, the first blower 194, the third fuel pump 292, and the second blower 293 as follows. That is, the liquid fuel is supplied from the liquid fuel pipe 150 to the housing member 120, air is supplied from the air pipe 160 to the temperature raising chamber 111, and the heating member 130 is energized. When the mixture is supplied from the pipe 240 to the subsequent heating chamber 211, the primary mixture is continuously burned in the heating chamber 111 and the secondary mixture is burned, and is further supplied to the subsequent heating chamber 211. The air-fuel mixture diffuses into the subsequent heating chamber 211 and mixes with air from the exhaust upstream side of the subsequent heating chamber 211 introduced from the inlet 212 of the subsequent heating member 210 to generate a tertiary air-fuel mixture. The tertiary gas mixture is heated by the temperature raising member 110 heated by the combustion heat of the primary gas mixture and the secondary gas mixture, and burns. High temperature exhaust gas is controlled so as to be led out to the downstream side of exhaust gas from the outlet 213 of said subsequent heating member 210. Air from the exhaust upstream side of the subsequent heating chamber 211 is air contained in the exhaust gas discharged from the internal combustion engine 300. In this case, the supply of the liquid fuel, the supply of air, and the like are controlled based on the signals from the temperature sensors 181 and 182 so that the temperature of the temperature raising chamber 111 does not exceed a predetermined temperature. Here, the controller 170 performs control based on the signals from the temperature sensors 181 and 182, but control may be performed without referring to the signal from the temperature sensor.

  The exhaust system extended temperature raising device 200 is provided in the internal combustion engine 300. The exhaust system extended temperature raising device 200 is provided in the exhaust passage constituting member 312. The exhaust-system extended temperature increasing device 200 is provided in the exhaust passage constituting member 312 such that the subsequent temperature raising member 210 is disposed inside the exhaust passage constituting member 312. The exhaust system temperature rising device 200 is provided such that the subsequent temperature raising member 210 is disposed in the exhaust passage 310. In that case, the inlet 212 of the subsequent temperature raising member 210 is arranged so as to face the exhaust upstream side of the exhaust passage 310, and the outlet 213 faces the exhaust downstream side of the exhaust passage 310. Therefore, the exhaust system temperature increasing device 100 included in the exhaust system extended temperature increasing device 200 has at least a portion on the exhaust port 113a side passing through the exhaust path constituting member 312 in the exhaust path 310. Arranged to be introduced. In that case, the flow rate of the exhaust gas discharged from the temperature raising member 110 is about 10% by weight or less of the flow rate of the exhaust gas discharged from the internal combustion engine 300 during the idling operation. However, this is merely an example, and embodiments in which the flow rate of the exhaust gas discharged from the temperature raising member shows other numerical values are also included in the present invention. The flow rate of the exhaust gas discharged from the temperature raising member is not limitedly interpreted. Since the exhaust passage constituting member 312 is provided with the diffusion plate 201, a middle portion of the subsequent mixture pipe 240 is disposed on the exhaust downstream side of the diffusion plate 201. The midway portion may be arranged on the exhaust upstream side of the diffusion plate as long as it is on the exhaust downstream side of the subsequent temperature raising member. The midway part of the subsequent air-fuel mixture pipe may be provided in another part inside or outside the exhaust passage constituting member, or may be provided in contact with the inner wall or the outer wall of the exhaust passage constituting member.

  Accordingly, both the exhaust system extended temperature raising apparatus 200 of the first embodiment and the exhaust system extended temperature rise apparatus 200 of the second embodiment are arranged so that the exhaust system extended temperature rise apparatus 200 is the internal combustion engine. When the extended temperature increasing device 200 of the exhaust system is operated in the exhaust passage 310 of the engine 300, the primary mixture, the secondary mixture, and the tertiary mixture burn, and the tertiary mixture burns. As a result, a flame amplified from the flame of the secondary mixture is formed, and a higher temperature exhaust gas is formed in the exhaust passage 310 by the combustion heat. The exhaust passage 310 is strongly heated by the hotter exhaust gas. Therefore, for example, when the internal combustion engine 300 is an internal combustion engine in which a particulate filter is provided in the exhaust passage 310, the particulate filter is regenerated. For example, when the internal combustion engine is an internal combustion engine that supplies fuel to the exhaust passage upstream of the particulate filter by the post injection or the injection into the exhaust passage, the post injection is performed. Alternatively, the fuel supplied to the exhaust passage is accelerated by injection into the exhaust passage, and the particulate filter is regenerated. Further, for example, when the internal combustion engine is an internal combustion engine in which an oxidation catalyst and a particulate filter are sequentially provided in the exhaust passage from the upstream side of the exhaust, the activity of the oxidation catalyst is promoted and the exhaust passage is heated to a high temperature. Exhaust gas is formed, whereby the particulate filter is regenerated. Further, for example, when the internal combustion engine is an internal combustion engine in which a particulate filter and an oxidation catalyst are sequentially provided in the exhaust passage from the exhaust upstream side, the exhaust system extended temperature raising member 200 is provided therebetween. As a result, the activity of the oxidation catalyst is promoted, and high-temperature exhaust gas is formed in the exhaust passage. As a result, white smoke discharged from the particulate filter is oxidized and reduced.

  In that case, the above-described exhaust system temperature raising device 100 performs the above-described operation, that is, ignition is performed reliably, misfire is prevented regardless of the operating conditions, and stable combustion is performed continuously. Is formed, white smoke is not generated by the unburned fuel, the fuel consumption rate is small compared to the case of performing the post injection or the injection into the exhaust passage, and the energy saving property is excellent. The possibility of being easily retrofitted to the internal combustion engine 300 is high, the configuration of the apparatus is relatively simple and the possibility of being miniaturized is high, and the possibility of cost reduction is high. When no oxidation catalyst is provided, the operation of using light oil or heavy oil having a relatively high sulfur content as fuel for the internal combustion engine 300 can be used as it is. In addition, even when other parts except for the exhaust system temperature raising device 100 are taken into consideration, the exhaust system extended temperature raising device 200 is more fuel than the case of performing the post injection or the injection into the exhaust passage 310. Low consumption rate and excellent energy saving, high possibility of being easily retrofitted to the internal combustion engine 300, high possibility of downsizing of the device relatively easily and miniaturization, and cost reduction There is a high possibility that, when the extended temperature increasing device 200 of the exhaust system is not provided with an oxidation catalyst, it is possible to use light oil or heavy oil having a relatively high sulfur content as the fuel of the internal combustion engine 300. Demonstrated. The exhaust system extended temperature increasing device 200 is used in an internal combustion engine filter regeneration device capable of regenerating a particulate filter, which will be described later, and an internal combustion engine exhaust gas purification device capable of oxidizing and reducing the generated white smoke. Is preferred. Further, in the exhaust temperature raising apparatus 200 of the second embodiment, the liquid fuel and air mixture is heated in the subsequent gas mixture pipe 240 by heat exchange with the exhaust gas, and the liquid fuel is heated. Since the vaporization of is promoted, the generation of the tertiary mixture is promoted.

  FIG. 10 shows a third embodiment of the exhaust system extended temperature raising apparatus of the present invention. The exhaust system extended temperature raising apparatus 200 of the third embodiment is partially different from the exhaust system extended temperature increase apparatus 200 of the first embodiment. Therefore, as an explanation of the exhaust system extended temperature raising device 200 of the third embodiment, the first embodiment and its modified examples, and the exhaust system extended temperature rise device 200 according to the various embodiments described above. Are quoted as they are, and only different configurations will be described. The exhaust system temperature increasing device 200 of the third embodiment is configured by using the exhaust system temperature increasing device 100 of the above embodiment. Moreover, the exhaust system temperature rising device 200 of the third embodiment can be configured by using the modified example of the above embodiment and the exhaust system temperature increasing device 100 according to the various embodiments. . Therefore, as an explanation of the exhaust system temperature raising device 100 in the exhaust system extended temperature raising device 200 of the third embodiment, the exhaust gas according to the above-described embodiment and its modifications, and the various embodiments described above. The configuration of the system heating device 100 will be quoted as it is.

  The exhaust system extended temperature raising apparatus 200 of the third embodiment further includes an additional air pipe 250 that is provided at one end on the exhaust upstream side of the subsequent temperature raising chamber 211 and to which air is supplied. Yes. At least a part of the air introduced from the inlet 212 of the subsequent heating member 210 from the exhaust upstream side of the subsequent heating chamber 211 is air supplied from the additional air pipe 250. That is, the air from the exhaust upstream side of the subsequent heating chamber 211 is constituted by the air contained in the exhaust gas exhausted from the internal combustion engine 300 and the air supplied from the additional air pipe 250. Therefore, when the internal combustion engine 300 is stopped, the exhaust gas discharged from the combustion chamber does not flow into the exhaust system extended temperature raising device 200, so the air from the exhaust upstream side of the subsequent temperature raising chamber 211 is not The air is supplied from the additional air pipe 250. That is, the air supplied from the additional air pipe 250 becomes air from the exhaust upstream side of the subsequent heating chamber 211. The additional air pipe 250 is connected to the discharge port of the third blower 294. A connection terminal to the power source of the third blower 294 is connected to the battery 196 as a power source via an electric wire 192i. The battery of the internal combustion engine 300 may be shared as this battery. The control unit of the third blower 294 is electrically connected to the controller 170, and the operation of the third blower 294 is controlled by the controller 170.

  The controller 170 controls the exhaust system of the first embodiment to operate the first fuel pump 191, the electric switch 193, the first blower 194, the second fuel pump 291, and the third blower 294. Control is performed in the same manner as in the case of the extended temperature raising apparatus 200. A signal from the ignition switch of the internal combustion engine 300 is input to the controller 170 so that the third blower 294 can be operated when the ignition switch is opened and the internal combustion engine 300 is stopped. Good.

  The exhaust system extended temperature raising apparatus 200 of the third embodiment can obtain the operations and effects obtained by the exhaust system extended temperature increase apparatus 200 of the first embodiment. Even when the internal combustion engine 300 is stopped, the tertiary air-fuel mixture is generated, and the exhaust temperature raising device 200 can be operated.

  FIG. 11 shows a fourth embodiment of the exhaust system extended temperature raising apparatus of the present invention. The exhaust system extended temperature raising apparatus 200 of the fourth embodiment is partially different from the exhaust system extended temperature increase apparatus 200 of the second embodiment. Therefore, as an explanation of the exhaust system extended temperature raising device 200 of the fourth embodiment, the second embodiment and its modified examples, and the exhaust system extended temperature rise device 200 according to the various embodiments described above. Are quoted as they are, and only different configurations will be described. The exhaust system temperature increasing device 200 of the fourth embodiment is configured by using the exhaust system temperature increasing device 100 of the above embodiment. Further, the exhaust system temperature rising device 200 of the fourth embodiment can be configured by using the modified example of the above embodiment and the exhaust system temperature increasing device 100 according to the various embodiments. . Therefore, as an explanation of the exhaust system temperature raising device 100 in the exhaust system extended temperature raising device 200 of the fourth embodiment, the exhaust gas according to the above-described embodiment and its modifications, and the various embodiments described above. The configuration of the system heating device 100 will be quoted as it is. The exhaust system extended temperature raising apparatus 200 of the fourth embodiment is adopted in the exhaust system extended temperature increase apparatus 200 of the third embodiment as the exhaust system extended temperature increase apparatus 200 of the second embodiment. Combined technologies. That is, in the extended temperature increasing device 200 for the exhaust system of the fourth embodiment, one end is further provided on the exhaust upstream side of the subsequent temperature increasing chamber 211 and air is supplied to the additional air pipe 250. It has. At least a part of the air from the exhaust upstream side of the subsequent heating chamber 211 is air supplied from the additional air pipe 250. That is, the air from the exhaust upstream side of the subsequent heating chamber 211 is constituted by the air contained in the exhaust gas exhausted from the internal combustion engine 300 and the air supplied from the additional air pipe 250. Therefore, when the internal combustion engine 300 is stopped, the exhaust gas discharged from the combustion chamber does not flow into the exhaust system extended temperature raising device 200, so the air from the exhaust upstream side of the subsequent temperature raising chamber 211 is not The air is supplied from the additional air pipe 250. That is, the air supplied from the additional air pipe 250 becomes air from the exhaust upstream side of the subsequent heating chamber 211. The additional air pipe 250 is connected to the discharge port of the third blower 294. A connection terminal to the power source of the third blower 294 is connected to the battery 196 as a power source via an electric wire 192i. The battery of the internal combustion engine 300 may be shared as this battery. The control unit of the third blower 294 is electrically connected to the controller 170, and the operation of the third blower 294 is controlled by the controller 170.

  The controller 170 controls the operation of the first fuel pump 191, the electrical switch 193, the first blower 194, the third fuel pump 292, the second blower 293, and the third blower 294 to the second blower 294. Control is performed in the same manner as in the exhaust system extended temperature raising apparatus 200 of the embodiment. A signal from the ignition switch of the internal combustion engine 300 is input to the controller 170 so that the third blower 294 can be operated when the ignition switch is opened and the internal combustion engine 300 is stopped. Good.

  If the exhaust system extended temperature raising apparatus 200 of the fourth embodiment is used, in addition to the effects and advantages obtained by the exhaust system extended temperature increase apparatus 200 of the second embodiment, the effects and effects obtained can be obtained. Even when the internal combustion engine 300 is stopped, the tertiary air-fuel mixture is generated, and the exhaust temperature raising device 200 can be operated.

  Next, an embodiment of a filter regeneration device A for an internal combustion engine of the present invention will be described. As shown in FIG. 12, the internal combustion engine filter regeneration device A according to this embodiment includes an internal combustion engine 300 provided with a particulate filter 400 that collects particulate matter contained in exhaust gas in the exhaust passage 310. Provided.

  As the description of the internal combustion engine 300 excluding the particulate filter 400, the description of the internal combustion engine 300 in the exhaust system temperature increasing device 100 according to the embodiment is used as it is.

  The particulate filter 400 is provided so that the cross section of the particulate filter 400 occupies the entire surface of the exhaust passage 310 in the direction of the exhaust flow, and the exhaust gas flowing through the exhaust passage 310 is entirely in the amount described above. It passes through the particulate filter 400. One end of the particulate filter 400 is provided with an end face on the exhaust gas introduction side, and the other end of the particulate filter 400 is provided with an end face on the exhaust gas outlet side. The particulate filter 400 is accommodated in an exhaust passage constituting member 313, that is, an internal passage of a cylindrical member that is a member constituting the exhaust passage 310, and is held by the exhaust passage constituting member 313. The particulate filter may be provided so as to be removable from the exhaust passage constituent member. The end face on the introduction side of the particulate filter 400 faces the exhaust upstream side in the exhaust passage 310, and the end face on the lead-out side faces the exhaust downstream side. The particulate filter 400 is a so-called sealing type. The particulate filter 400 is a so-called honeycomb body made of ceramic and having a plurality of cells partitioned by partition walls, in which the honeycombs are alternately closed at the ends of the cells, and the exhaust gas passes through the wall. Particulate matter is collected as it passes through. In the end face on the introduction side of the particulate filter 400, the end face of each cell is alternately closed by a sealing material in a checkered pattern. On the end face on the lead-out side, the cell closed by the end face on the introduction side is open. The cell opened at the end face on the introduction side has a structure closed with a sealing material. Other examples of the particulate filter include a porous material type and a fiber type, which are made of a material such as metal, for example, and the particulate matter is generated when the exhaust collides with the porous material or the fiber structure. Is configured to collect. However, the structure of the particulate filter that is the subject of the present invention is not limited to this embodiment, and any structure that exhibits a function of collecting particulate matter contained in the exhaust gas may be used.

  The exhaust system extended temperature raising device 200 of the first embodiment is provided such that the subsequent temperature raising member 210 is disposed in the exhaust passage 310 upstream of the particulate filter 400 in the exhaust gas. Yes. In this embodiment, the exhaust passage constituting member 312 is connected to the exhaust upstream side of the exhaust passage constituting member 313. For example, another exhaust passage is provided between the exhaust passage constituting member 313 and the exhaust passage constituting member 312. A structural member or the like may be provided. A temperature sensor 183 is provided in the exhaust passage 310 upstream of the particulate filter 400 and downstream of the diffuser plate 201 and detects the temperature of the exhaust passage 310. The temperature sensor 183 Output signal is sent to the controller 170 via the electric wire 192j. Based on the signal from the temperature sensor 183, the supply of the liquid fuel, the supply of air, and the like are controlled such that the temperature on the exhaust upstream side of the particulate filter 400 does not exceed a predetermined temperature. The temperature sensor 183 is a thermocouple, but may be another device as long as the temperature can be detected. However, the number and position of the temperature sensors provided in the exhaust passage 310 are not limited by this embodiment. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  Then, the high-temperature exhaust gas generated by the combustion of the exhaust system extended temperature raising device 200 is guided to the particulate filter 400, and the particulate matter collected by the particulate filter 400 is oxidized by the exhaust gas. And the particulate filter 400 is regenerated. In this case, instead of the exhaust system extended temperature raising apparatus 200 of the first embodiment, the exhaust system according to the second embodiment, the third embodiment, or the fourth embodiment may be expanded. A temperature device 200 may be provided. Therefore, the air from the exhaust upstream side of the subsequent heating chamber 211 is the air included in the exhaust gas discharged from the internal combustion engine 300, the air supplied from the additional air pipe 250, or both of these airs. One of them.

  In the filter regeneration device A for an internal combustion engine according to the embodiment, the exhaust passage 310 is strongly heated by the high-temperature exhaust gas from the extended temperature raising device 200 of the exhaust system. The particulate filter 400 is strongly regenerated by promoting the oxidation of the collected particulate matter. When the exhaust filter regeneration device A is not provided with an oxidation catalyst, light oil or heavy oil having a relatively high sulfur content may be used as the fuel for the internal combustion engine 300.

  Next, an embodiment of a filter regeneration device B for an internal combustion engine of the present invention will be described. FIG. 13 shows a first embodiment of the filter regeneration device B of the internal combustion engine. In the filter regeneration device B for an internal combustion engine according to the first embodiment, a particulate filter 400 that collects particulate matter contained in exhaust gas is provided in the exhaust passage 310, and the exhaust gas upstream of the particulate filter 400 is provided. When the supplementary fuel is supplied to the exhaust passage 310 on the side, and the supplementary fuel is combusted, the high-temperature exhaust gas generated by the combustion promotes the oxidation of the particulate matter collected by the particulate filter 400. The internal combustion engine 300 configured to regenerate the particulate filter 400 is provided.

  As the description of the internal combustion engine 300 excluding the particulate filter 400 and the supplementary fuel supply means, the description of the internal combustion engine 300 in the exhaust system temperature increasing device 100 according to the embodiment is directly used. The same applies to other embodiments of the filter regeneration device B for an internal combustion engine, which will be described later.

  Since the particulate filter 400 has the same configuration as the particulate filter 400 in the first embodiment of the filter regeneration device A for the internal combustion engine, the description thereof will be cited as it is. Therefore, the particulate filter 400 is accommodated in the internal passage of the exhaust passage constituting member 313 and is held by the exhaust passage constituting member 313.

  In the filter regeneration device B for the internal combustion engine of the first embodiment, fuel is supplied to the exhaust passage 310 upstream of the particulate filter 400 by the post injection. That is, the internal combustion engine 300 employs a common rail injection system as described above. The post-injection is to inject fuel from the injector during an expansion stroke or the like. The fuel injection controller 320 is provided with a control unit for controlling the post injection.

  In the exhaust system temperature increasing device 100 according to the above embodiment, at least a portion of the temperature increasing member 110 on the exhaust port 113a side is upstream of the particulate filter 400 and from the replenishment fuel supply site. Is also provided in the exhaust passage 310 on the exhaust downstream side. In this case, since the post-injection is performed, the supplementary fuel supply site is the combustion chamber of the internal combustion engine 300. In this embodiment, the exhaust passage constituent member 311 is connected to the exhaust upstream side of the exhaust passage constituent member 313. However, for example, another exhaust passage is provided between the exhaust passage constituent member 313 and the exhaust passage constituent member 311. A structural member or the like may be provided. A temperature sensor 183 is provided in the exhaust passage 310 upstream of the particulate filter 400 and downstream of the diffusion plate 102 and detects the temperature of the exhaust passage 310. The temperature sensor 183 Output signal is sent to the controller 170 via the electric wire 192j. Based on the signal from the temperature sensor 183, the supply of the liquid fuel, the supply of air, and the like are controlled such that the temperature on the exhaust upstream side of the particulate filter 400 does not exceed a predetermined temperature. The temperature sensor 183 is a thermocouple, but may be another device as long as the temperature can be detected. However, the number and position of the temperature sensors provided in the exhaust passage 310 are not limited by this embodiment. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  The supplementary fuel supplied to the exhaust passage 310 is heated by the exhaust temperature raising device 100 to promote vaporization, and the vaporized supplementary fuel is exhausted upstream of the exhaust temperature raising device 100. Is mixed with the air from the exhaust gas to produce a supplemental gas mixture, and the supplemental gas mixture is heated and combusted by the temperature raising device 100 of the exhaust system. The particulate filter 400 is regenerated by promoting the oxidation of the particulate matter collected in the catalyst.

  The filter regeneration device B for the internal combustion engine of the first embodiment is supplied to the exhaust passage 310 because the exhaust passage 310 is heated by the high-temperature exhaust gas from the temperature raising device 100 of the exhaust system. The vaporization of the fuel is promoted, and the particulate filter 400 is regenerated by promoting the oxidation of the particulate matter collected by the particulate filter 400 by the oxidizing action of the fuel. When the exhaust system filter regeneration device B is not provided with an oxidation catalyst, light oil or heavy oil having a relatively high sulfur content may be used as the fuel for the internal combustion engine 300.

  FIG. 14 shows a second embodiment of the filter regeneration device B for the internal combustion engine. In the filter regeneration device B for an internal combustion engine according to the second embodiment, a particulate filter 400 that collects particulate matter contained in the exhaust gas is provided in the exhaust passage 310, and the exhaust upstream of the particulate filter 400 is provided. When the supplementary fuel is supplied to the exhaust passage 310 on the side, and the supplementary fuel is combusted, the high-temperature exhaust gas generated by the combustion promotes the oxidation of the particulate matter collected by the particulate filter 400. The internal combustion engine 300 configured to regenerate the particulate filter 400 is provided. The internal combustion engine filter regeneration device B according to the second embodiment is the same as the internal combustion engine filter regeneration device B according to the first embodiment, except that the exhaust system temperature increase device 100 is replaced with an extended temperature increase of the exhaust system. An apparatus 200 is provided.

  Since the particulate filter 400 has the same configuration as the particulate filter 400 in the first embodiment of the filter regeneration device A for the internal combustion engine, the description thereof will be cited as it is. Therefore, the particulate filter 400 is accommodated in the internal passage of the exhaust passage constituting member 313 and is held by the exhaust passage constituting member 313.

  In the filter regeneration device B for an internal combustion engine according to the second embodiment, fuel is supplied to the exhaust passage 310 upstream of the particulate filter 400 by the post injection. That is, the internal combustion engine 300 employs a common rail injection system as described above. The post-injection is to inject fuel from the injector during an expansion stroke or the like. The fuel injection controller 320 is provided with a control unit for controlling the post injection.

  Then, the exhaust system extended temperature raising apparatus 200 according to the first embodiment is configured so that the subsequent temperature raising member 210 is located on the exhaust upstream side of the particulate filter 400 and on the exhaust downstream side of the supplementary fuel supply site. It is provided so as to be arranged in the exhaust passage 310. In this case, since the post-injection is performed, the supplementary fuel supply site is the combustion chamber of the internal combustion engine 300. In this embodiment, the exhaust passage constituting member 312 is connected to the exhaust upstream side of the exhaust passage constituting member 313. For example, another exhaust passage is provided between the exhaust passage constituting member 313 and the exhaust passage constituting member 312. A structural member or the like may be provided. The configuration of the temperature sensor 183, the position of the temperature sensor 183, and the content of control using the temperature sensor 183 is that the position of the temperature sensor 183 is on the exhaust gas downstream side of the diffusion plate 201 instead of the exhaust gas downstream side of the diffusion plate 102. Except for the above, this is the same as the case of the filter regeneration device B for the internal combustion engine of the first embodiment, so the description thereof will be cited as it is. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  Then, the supplementary fuel supplied to the exhaust passage 310 is heated by the extended temperature raising device 200 of the exhaust system to promote vaporization, and the vaporized supplementary fuel is exhausted from the extended temperature raising device 200 of the exhaust system. It mixes with the air from the upstream side to generate a supplementary mixture, and the supplementary mixture is heated and combusted by the extended temperature raising device 200 of the exhaust system. The particulate filter 400 is regenerated by promoting the oxidation of the particulate matter collected by the curate filter 400. In this case, instead of the exhaust system extended temperature raising apparatus 200 of the first embodiment, the exhaust system according to the second embodiment, the third embodiment, or the fourth embodiment may be expanded. A temperature device 200 may be provided. Therefore, the air from the exhaust upstream side of the subsequent heating chamber 211 is the air included in the exhaust gas discharged from the internal combustion engine 300, the air supplied from the additional air pipe 250, or both of these airs. One of them.

  In the filter regeneration device B for the internal combustion engine of the second embodiment, the exhaust passage 310 is strongly heated by the high-temperature exhaust gas from the extended temperature raising device 200 of the exhaust system. The vaporization of the fuel supplied to the fuel is promoted, and the oxidation of the particulate matter collected by the particulate filter 400 is promoted by the oxidizing action of the fuel, so that the particulate filter 400 is strongly regenerated. When the exhaust system filter regeneration device B is not provided with an oxidation catalyst, light oil or heavy oil having a relatively high sulfur content may be used as the fuel for the internal combustion engine 300.

  FIG. 15 shows a third embodiment of the filter regeneration device B for the internal combustion engine. In the filter regeneration device B for an internal combustion engine according to the third embodiment, a particulate filter 400 that collects particulate matter contained in the exhaust gas is provided in the exhaust passage 310, and the exhaust upstream of the particulate filter 400 is provided. When the supplementary fuel is supplied to the exhaust passage 310 on the side, and the supplementary fuel is combusted, the high-temperature exhaust gas generated by the combustion promotes the oxidation of the particulate matter collected by the particulate filter 400. The internal combustion engine 300 configured to regenerate the particulate filter 400 is provided. The filter regeneration device B for an internal combustion engine according to the third embodiment is configured to supply fuel to the exhaust passage upstream of the particulate filter in the filter regeneration device B for the internal combustion engine according to the first embodiment. Instead of performing the post injection, the fuel supply to the exhaust passage 310 upstream of the particulate filter 400 is performed by the fuel injection to the exhaust passage 310.

  Since the particulate filter 400 has the same configuration as the particulate filter 400 in the first embodiment of the filter regeneration device A for the internal combustion engine, the description thereof will be cited as it is. Therefore, the particulate filter 400 is accommodated in the internal passage of the exhaust passage constituting member 313 and is held by the exhaust passage constituting member 313.

  In the filter regeneration device B for an internal combustion engine of the third embodiment, the fuel is supplied to the exhaust passage 310 upstream of the particulate filter 400 by the fuel injection into the exhaust passage 310. . That is, the exhaust passage constituting member 311 constituting the exhaust passage 310 is provided with an injector 510 for injecting fuel, and fuel is supplied to the injector 510 from a fuel pump (not shown). The fuel is injected into the exhaust passage 310 on the exhaust upstream side of the particulate filter 400. In this case, the injector may be provided in the exhaust passage constituent member which constitutes the exhaust passage 310 and is upstream of the exhaust passage relative to the exhaust passage constituent member 311.

  In the exhaust system temperature increasing device 100 according to the above embodiment, at least a portion of the temperature increasing member 110 on the exhaust port 113a side is upstream of the particulate filter 400 and from the replenishment fuel supply site. Is also provided in the exhaust passage 310 on the exhaust downstream side. In this case, since fuel is supplied to the exhaust passage 310 upstream of the particulate filter 400 by fuel injection into the exhaust passage 310, the supplementary fuel supply site is the injection port of the injector 510. Is the position. In this embodiment, the exhaust passage constituent member 311 is connected to the exhaust upstream side of the exhaust passage constituent member 313. However, for example, another exhaust passage is provided between the exhaust passage constituent member 313 and the exhaust passage constituent member 311. A structural member or the like may be provided. The configuration, arrangement position, and control content using the temperature sensor 183 are the same as in the case of the filter regeneration device B for the internal combustion engine of the first embodiment, and therefore the description thereof will be cited as it is. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  The supplementary fuel supplied to the exhaust passage 310 is heated by the exhaust temperature raising device 100 to promote vaporization, and the vaporized supplementary fuel is exhausted upstream of the exhaust temperature raising device 100. Is mixed with the air from the exhaust gas to produce a supplemental gas mixture, and the supplemental gas mixture is heated and combusted by the temperature raising device 100 of the exhaust system. The particulate filter 400 is regenerated by promoting the oxidation of the particulate matter collected in the catalyst.

  The filter regeneration device B for the internal combustion engine of the third embodiment is supplied to the exhaust passage 310 because the exhaust passage 310 is heated by the high-temperature exhaust gas from the temperature raising device 100 of the exhaust system. The vaporization of the fuel is promoted, and the particulate filter 400 is regenerated by promoting the oxidation of the particulate matter collected by the particulate filter 400 by the oxidizing action of the fuel.

  FIG. 16 shows a fourth embodiment of the filter regeneration device B of the internal combustion engine. In the filter regeneration device B for an internal combustion engine according to the fourth embodiment, a particulate filter 400 that collects particulate matter contained in exhaust gas is provided in the exhaust passage 310, and the exhaust gas upstream of the particulate filter 400 is provided. When the supplementary fuel is supplied to the exhaust passage 310 on the side, and the supplementary fuel is combusted, the high-temperature exhaust gas generated by the combustion promotes the oxidation of the particulate matter collected by the particulate filter 400. The internal combustion engine 300 configured to regenerate the particulate filter 400 is provided. The filter regeneration device B for an internal combustion engine according to the fourth embodiment supplies fuel to the exhaust passage upstream of the particulate filter in the filter regeneration device B for the internal combustion engine according to the second embodiment. Instead of performing the post injection, the fuel supply to the exhaust passage 310 upstream of the particulate filter 400 is performed by the fuel injection to the exhaust passage 310.

  Since the particulate filter 400 has the same configuration as the particulate filter 400 in the first embodiment of the filter regeneration device A for the internal combustion engine, the description thereof will be cited as it is. Therefore, the particulate filter 400 is accommodated in the internal passage of the exhaust passage constituting member 313 and is held by the exhaust passage constituting member 313.

  In the filter regeneration device B for an internal combustion engine according to the fourth embodiment, fuel is supplied to the exhaust passage 310 upstream of the particulate filter 400 by fuel injection into the exhaust passage 310. . That is, the exhaust passage constituting member 312 constituting the exhaust passage 310 is provided with an injector 510 for injecting fuel, and fuel is supplied to the injector 510 from a fuel pump (not shown). The fuel is injected into the exhaust passage 310 on the exhaust upstream side of the particulate filter 400. In this case, the injector may be provided in the exhaust passage constituent member that constitutes the exhaust passage 310 and is upstream of the exhaust passage relative to the exhaust passage constituent member 312.

  Then, the exhaust system extended temperature raising apparatus 200 according to the first embodiment is configured so that the subsequent temperature raising member 210 is located on the exhaust upstream side of the particulate filter 400 and on the exhaust downstream side of the supplementary fuel supply site. It is provided so as to be arranged in the exhaust passage 310. In this case, since fuel is supplied to the exhaust passage 310 upstream of the particulate filter 400 by fuel injection into the exhaust passage 310, the supplementary fuel supply site is the injection port of the injector 510. Is the position. In this embodiment, the exhaust passage constituting member 312 is connected to the exhaust upstream side of the exhaust passage constituting member 313. For example, another exhaust passage is provided between the exhaust passage constituting member 313 and the exhaust passage constituting member 312. A structural member or the like may be provided. The configuration of the temperature sensor 183, the position of the temperature sensor 183, and the content of control using the temperature sensor 183 is that the position of the temperature sensor 183 is on the exhaust gas downstream side of the diffusion plate 201 instead of the exhaust gas downstream side of the diffusion plate 102. Except for the above, this is the same as the case of the filter regeneration device B for the internal combustion engine of the first embodiment, so the description thereof will be cited as it is. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  Then, the supplementary fuel supplied to the exhaust passage 310 is heated by the extended temperature raising device 200 of the exhaust system to promote vaporization, and the vaporized supplementary fuel is exhausted from the extended temperature raising device 200 of the exhaust system. It mixes with the air from the upstream side to generate a supplementary mixture, and the supplementary mixture is heated and combusted by the extended temperature raising device 200 of the exhaust system. The particulate filter 400 is regenerated by promoting the oxidation of the particulate matter collected by the curate filter 400. In this case, instead of the exhaust system extended temperature raising apparatus 200 of the first embodiment, the exhaust system according to the second embodiment, the third embodiment, or the fourth embodiment may be expanded. A temperature device 200 may be provided. Therefore, the air from the exhaust upstream side of the subsequent heating chamber 211 is the air included in the exhaust gas discharged from the internal combustion engine 300, the air supplied from the additional air pipe 250, or both of these airs. One of them.

  In the filter regeneration device B for an internal combustion engine according to the fourth embodiment, the exhaust passage 310 is strongly heated by the high-temperature exhaust gas from the extended temperature raising device 200 of the exhaust system. The vaporization of the fuel supplied to the fuel is promoted, and the oxidation of the particulate matter collected by the particulate filter 400 is promoted by the oxidizing action of the fuel, so that the particulate filter 400 is strongly regenerated.

  FIG. 17 shows a fifth embodiment of the filter regeneration device B for the internal combustion engine. The filter regeneration device B for an internal combustion engine according to the fifth embodiment is the exhaust passage between the temperature raising member 110 and the particulate filter 400 in the filter regeneration device B for the internal combustion engine according to the first embodiment. A pre-filter catalyst device 610 is provided at 310, which includes an oxidation catalyst that promotes oxidation of a substance contained in the exhaust gas by a catalytic reaction.

Although the catalyst device 610 just before the filter includes the oxidation catalyst and a casing that covers the oxidation catalyst except for both ends thereof, the catalyst device just before the filter is formed by the oxidation catalyst itself without providing such a casing. It may be configured. The catalyst device 610 just before the filter is provided so that the cross section of the catalyst device 610 just before the filter occupies the entire surface of the exhaust passage 310 in the direction of the exhaust flow, and the exhaust gas flowing through the exhaust passage 310 is all of the exhaust gas. Pass through the catalyst device 610 immediately before the filter. The oxidation catalyst included in the catalyst device 610 immediately before the filter is a diesel oxidation catalyst, but other types of oxidation catalysts may be used depending on the state of the internal combustion engine. An end surface on the exhaust gas introduction side is provided at one end of the catalyst device 610 just before the filter, and an end surface on the exhaust gas discharge side is provided at the other end of the catalyst device 610 just before the filter. The catalyst device 610 just before the filter is accommodated in an internal passage of an exhaust passage constituting member, that is, a cylindrical exhaust passage constituting member 314 that is a member constituting the exhaust passage 310, and is held by the exhaust passage constituting member 314. Yes. The end face on the introduction side of the catalyst device 610 immediately before the filter faces the exhaust upstream side in the exhaust passage 310, and the end face on the lead-out side faces the exhaust downstream side in the exhaust passage 310. The catalyst device 610 just before the filter includes a stainless steel base material provided with a large number of thin through holes for flowing exhaust gas, and platinum (Pt) as an oxidation catalyst carried on the base material. The base material is not limited to stainless steel, and may be formed of, for example, cordierite or ceramic. The supported material is not limited to platinum (Pt), and may be any other material as long as it exhibits the function of an oxidation catalyst that promotes the oxidation of a substance contained in the exhaust gas by a catalytic reaction. . Then, when exhaust gas from the exhaust passage 310 on the exhaust upstream side enters the catalyst immediately before the filter device 610 from the end face on the introduction side, particles contained in the exhaust gas due to the catalytic reaction of the oxidation catalyst in the catalyst device 610 immediately before the filter. The substances are oxidized, and substances such as CO, HC, and SOF contained in the exhaust gas are oxidized to be changed to CO2 or water. The exhaust gas is heated by this oxidation reaction to a high temperature. The catalyst device immediately before the filter of the present invention is not limited to this embodiment, and any device that exhibits a function of promoting oxidation of a substance contained in exhaust gas by a catalytic reaction may be used. With the above configuration, the particulate filter 400 is promoted by promoting the oxidation of the particulate matter collected by the particulate filter 400 with the exhaust gas heated by the oxidation reaction of the substance in the catalyst device 610 immediately before the filter. I try to play it. The substances mentioned in the present invention include particulate substances contained in exhaust gas, and substances such as CO, HC, and SOF contained in exhaust gas.

  The exhaust passage constituting member 314 is connected to the exhaust upstream side of the exhaust passage constituting member 313, and the exhaust passage constituting member 311 is connected to the exhaust upstream side of the exhaust passage constituting member 314. However, for example, another exhaust passage constituent member may be provided between the exhaust passage constituent members 311, 314, and 313. The temperature sensor 183 described in the filter regeneration device B of the internal combustion engine of the first embodiment is provided on the exhaust upstream side of the catalyst immediately before filter 610 and on the exhaust downstream side of the diffusion plate 102. The output signal of the temperature sensor 183 is sent to the controller 170 via the electric wire 192j. Based on the signal from the temperature sensor 183, the supply of the liquid fuel, the supply of air, and the like are controlled so that the temperature on the exhaust upstream side of the catalyst device 610 just before the filter does not exceed a predetermined temperature. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  The other configuration is the same as that of the filter regeneration device B for the internal combustion engine of the first embodiment, and the description thereof will be cited as it is.

  The internal combustion engine filter regeneration device B of the fifth embodiment is supplied to the exhaust passage 310 because the exhaust passage 310 is heated by the high-temperature exhaust gas from the exhaust temperature raising device 100. The vaporization of the fuel is promoted, and the particulate filter 400 is regenerated by promoting the oxidation of the particulate matter collected by the particulate filter 400 by the oxidizing action of the fuel. In addition, a pre-filter catalyst device 610 having an oxidation catalyst is provided in the exhaust passage 310 between the temperature raising member 110 and the particulate filter 400. Therefore, since the exhaust passage 310 is heated by the high-temperature exhaust gas, the activation of the catalyst device 610 just before the filter is promoted, and a high-temperature exhaust gas is formed in the exhaust passage 310, thereby the exhaust passage 310. The particulate filter 400 provided in is regenerated.

  FIG. 18 shows a sixth embodiment of the filter regeneration device B for the internal combustion engine. The internal combustion engine filter regeneration device B of the sixth embodiment is the exhaust gas between the subsequent temperature raising member 210 and the particulate filter 400 in the internal combustion engine filter regeneration device B of the second embodiment. In the passage 310, the catalyst device 610 just before the filter provided with an oxidation catalyst that promotes oxidation of a substance contained in the exhaust gas by a catalytic reaction is provided.

  Since the catalyst device 610 just before the filter has the same configuration as the catalyst device 610 just before the filter in the fifth embodiment of the filter regeneration device B of the internal combustion engine, the description thereof is cited as it is. Therefore, the catalyst device 610 just before the filter is accommodated in the internal passage of the exhaust passage constituting member 314 and is held by the exhaust passage constituting member 314.

  The exhaust passage constituting member 314 is connected to the exhaust upstream side of the exhaust passage constituting member 313, and the exhaust passage constituting member 312 is connected to the exhaust upstream side of the exhaust passage constituting member 314. However, for example, another exhaust passage constituent member may be provided between the exhaust passage constituent members 312, 314, and 313. The configuration of the temperature sensor 183, the position of the temperature sensor 183, and the content of control using the temperature sensor 183 is that the position of the temperature sensor 183 is on the exhaust gas downstream side of the diffusion plate 201 instead of the exhaust gas downstream side of the diffusion plate 102. Except for this, it is the same as in the case of the filter regeneration device B for the internal combustion engine of the fifth embodiment, so the description thereof will be cited as it is. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  The other configuration is the same as that of the filter regeneration device B for the internal combustion engine of the second embodiment, and the description thereof will be cited as it is.

  In the filter regeneration device B for the internal combustion engine of the sixth embodiment, the exhaust passage 310 is strongly heated by the high-temperature exhaust gas from the extended temperature raising device 200 of the exhaust system. The vaporization of the fuel supplied to the fuel is promoted, and the oxidation of the particulate matter collected by the particulate filter 400 is promoted by the oxidizing action of the fuel, so that the particulate filter 400 is strongly regenerated. Further, a pre-filter catalyst device 610 having an oxidation catalyst is provided in the exhaust passage 310 between the subsequent temperature raising member 210 and the particulate filter 400. Therefore, the exhaust passage 310 is strongly heated by the high-temperature exhaust gas, so that the activity of the catalyst device 610 immediately before the filter is promoted to form a high-temperature exhaust gas in the exhaust passage 310, thereby the exhaust gas. The particulate filter 400 provided in the passage 310 is strongly regenerated.

  FIG. 19 shows a seventh embodiment of the filter regeneration device B for the internal combustion engine. The filter regeneration device B for an internal combustion engine according to the seventh embodiment is the exhaust passage between the temperature raising member 110 and the particulate filter 400 in the filter regeneration device B for the internal combustion engine according to the third embodiment. 310 is provided with the catalyst device 610 just before the filter provided with an oxidation catalyst that promotes oxidation of a substance contained in the exhaust gas by a catalytic reaction.

  Since the catalyst device 610 just before the filter has the same configuration as the catalyst device 610 just before the filter in the fifth embodiment of the filter regeneration device B of the internal combustion engine, the description thereof is cited as it is. Therefore, the catalyst device 610 just before the filter is accommodated in the internal passage of the exhaust passage constituting member 314 and is held by the exhaust passage constituting member 314.

  The exhaust passage constituting member 314 is connected to the exhaust upstream side of the exhaust passage constituting member 313, and the exhaust passage constituting member 311 is connected to the exhaust upstream side of the exhaust passage constituting member 314. However, for example, another exhaust passage constituent member may be provided between the exhaust passage constituent members 311, 314, and 313. The configuration, arrangement position, and control content using the temperature sensor 183 are the same as those in the filter regeneration device B for the internal combustion engine of the fifth embodiment, and therefore the description thereof is cited as it is. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  The other configuration is the same as that of the filter regeneration device B for the internal combustion engine of the third embodiment, and the description thereof is cited as it is.

  The internal combustion engine filter regeneration device B of the seventh embodiment is supplied to the exhaust passage 310 because the exhaust passage 310 is heated by the high-temperature exhaust gas from the exhaust temperature raising device 100. The vaporization of the fuel is promoted, and the particulate filter 400 is regenerated by promoting the oxidation of the particulate matter collected by the particulate filter 400 by the oxidizing action of the fuel. In addition, a pre-filter catalyst device 610 having an oxidation catalyst is provided in the exhaust passage 310 between the temperature raising member 110 and the particulate filter 400. Therefore, since the exhaust passage 310 is heated by the high-temperature exhaust gas, the activation of the catalyst device 610 just before the filter is promoted, and a high-temperature exhaust gas is formed in the exhaust passage 310, thereby the exhaust passage 310. The particulate filter 400 provided in is regenerated.

  FIG. 20 shows an eighth embodiment of the filter regeneration device B for the internal combustion engine. The internal combustion engine filter regeneration device B according to the eighth embodiment is the exhaust gas between the succeeding temperature raising member 210 and the particulate filter 400 in the internal combustion engine filter regeneration device B according to the fourth embodiment. In the passage 310, the catalyst device 610 just before the filter provided with an oxidation catalyst that promotes oxidation of a substance contained in the exhaust gas by a catalytic reaction is provided.

  Since the catalyst device 610 just before the filter has the same configuration as the catalyst device 610 just before the filter in the fifth embodiment of the filter regeneration device B of the internal combustion engine, the description thereof is cited as it is. Therefore, the catalyst device 610 just before the filter is accommodated in the internal passage of the exhaust passage constituting member 314 and is held by the exhaust passage constituting member 314.

  The exhaust passage constituting member 314 is connected to the exhaust upstream side of the exhaust passage constituting member 313, and the exhaust passage constituting member 312 is connected to the exhaust upstream side of the exhaust passage constituting member 314. However, for example, another exhaust passage constituent member may be provided between the exhaust passage constituent members 312, 314, and 313. The configuration of the temperature sensor 183, the position of the temperature sensor 183, and the content of control using the temperature sensor 183 is that the position of the temperature sensor 183 is on the exhaust gas downstream side of the diffusion plate 201 instead of the exhaust gas downstream side of the diffusion plate 102. Except for this, it is the same as in the case of the filter regeneration device B for the internal combustion engine of the fifth embodiment, so the description thereof will be cited as it is. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  The other configuration is the same as that of the filter regeneration device B for the internal combustion engine of the fourth embodiment, and the description thereof is cited as it is.

  In the filter regeneration device B for an internal combustion engine according to the eighth embodiment, the exhaust passage 310 is strongly heated by the high-temperature exhaust gas from the extended temperature raising device 200 of the exhaust system. The vaporization of the fuel supplied to the fuel is promoted, and the oxidation of the particulate matter collected by the particulate filter 400 is promoted by the oxidizing action of the fuel, so that the particulate filter 400 is strongly regenerated. Further, a pre-filter catalyst device 610 having an oxidation catalyst is provided in the exhaust passage 310 between the subsequent temperature raising member 210 and the particulate filter 400. Therefore, the exhaust passage 310 is strongly heated by the high-temperature exhaust gas, so that the activity of the catalyst device 610 immediately before the filter is promoted to form a high-temperature exhaust gas in the exhaust passage 310, thereby the exhaust gas. The particulate filter 400 provided in the passage 310 is strongly regenerated.

  Next, an embodiment of a filter regeneration device C for an internal combustion engine of the present invention will be described. FIG. 21 shows a first embodiment of the filter regeneration device C for the internal combustion engine. In the filter regeneration device C for an internal combustion engine according to the first embodiment, a particulate filter 400 for collecting particulate matter contained in exhaust gas is provided in the exhaust passage 310, and the particulate filter in the exhaust passage 310 is provided. 400 immediately before the filter is provided with an oxidation catalyst that promotes oxidation of a substance contained in the exhaust gas by a catalytic reaction, and when the catalytic activity of the catalyst immediately before the filter 610 is obtained, The internal combustion engine 300 is configured to regenerate the particulate filter 400 by promoting the oxidation of the particulate matter collected by the particulate filter 400 with the exhaust gas heated by the oxidation reaction of the material.

  As the description of the internal combustion engine 300 excluding the particulate filter 400 and the catalyst device 610 just before the filter, the description of the internal combustion engine 300 in the exhaust system temperature increasing device 100 according to the embodiment is used as it is. The same applies to other embodiments of the filter regeneration device C for an internal combustion engine, which will be described later.

  Since the particulate filter 400 has the same configuration as the particulate filter 400 in the first embodiment of the filter regeneration device A for the internal combustion engine, the description thereof will be cited as it is. Therefore, the particulate filter 400 is accommodated in the internal passage of the exhaust passage constituting member 313 and is held by the exhaust passage constituting member 313.

  Since the catalyst device 610 just before the filter has the same configuration as the catalyst device 610 just before the filter in the fifth embodiment of the filter regeneration device B of the internal combustion engine, the description thereof is cited as it is. Therefore, the catalyst device 610 just before the filter is accommodated in the internal passage of the exhaust passage constituting member 314 and is held by the exhaust passage constituting member 314.

  In the exhaust system temperature increasing device 100 of the above embodiment, at least a portion of the temperature increasing member 110 on the exhaust port 113a side is disposed in the exhaust passage 310 upstream of the filter immediately preceding catalyst device 610. It is provided so that. In this embodiment, the exhaust passage constituent member 311 is connected to the exhaust upstream side of the exhaust passage constituent member 314. For example, another exhaust passage is provided between the exhaust passage constituent member 314 and the exhaust passage constituent member 311. A structural member or the like may be provided. A temperature sensor 183 is provided in the exhaust passage 310 on the exhaust upstream side of the catalyst device 610 immediately before the filter and on the exhaust downstream side of the diffusion plate 102, and detects the temperature of the exhaust passage 310. The output signal 183 is sent to the controller 170 via the electric wire 192j. Based on the signal from the temperature sensor 183, the supply of the liquid fuel, the supply of air, and the like are controlled so that the temperature on the exhaust upstream side of the catalyst device 610 just before the filter does not exceed a predetermined temperature. The temperature sensor 183 is a thermocouple, but may be another device as long as the temperature can be detected. However, the number and position of the temperature sensors provided in the exhaust passage 310 are not limited by this embodiment. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  Then, the catalyst device 610 just before the filter is heated by the temperature raising device 100 of the exhaust system to promote the catalytic activity of the catalyst device 610 just before the filter, and the particulate filter is heated by the exhaust gas heated by the oxidation reaction of the substance. The particulate filter 400 is regenerated by promoting the oxidation of the particulate matter collected in 400.

  In the internal combustion engine filter regeneration device C of the first embodiment, the exhaust passage 310 is heated by the high-temperature exhaust gas from the exhaust system temperature raising device 100, so The activity is promoted to form a high-temperature exhaust gas in the exhaust passage 310, thereby promoting the oxidation of the particulate matter collected in the particulate filter 400 provided in the exhaust passage 310, and the particulates. Filter 400 is regenerated.

  FIG. 22 shows a second embodiment of the filter regeneration device C for the internal combustion engine. The filter regeneration device C for the internal combustion engine according to the second embodiment includes particulate matter contained in the exhaust gas in the exhaust passage 310. The particulate filter 400 is provided in the exhaust passage 310, and the catalyst immediately before the filter is provided with an oxidation catalyst that promotes oxidation of a substance contained in the exhaust gas by a catalytic reaction at the exhaust upstream side of the particulate filter 400 in the exhaust passage 310. An apparatus 610 is provided, and when the catalytic activity of the catalyst apparatus 610 immediately before the filter is obtained, the exhaust gas heated by the oxidation reaction of the substance promotes the oxidation of the particulate matter collected on the particulate filter 400. The internal combustion engine 300 configured to regenerate the particulate filter 400 is provided. The internal combustion engine filter regeneration device C according to the second embodiment is the same as the internal combustion engine filter regeneration device C according to the first embodiment, except that the exhaust system temperature increase device 100 is replaced with an extended temperature increase of the exhaust system. An apparatus 200 is provided.

  Since the particulate filter 400 has the same configuration as the particulate filter 400 in the first embodiment of the filter regeneration device A for the internal combustion engine, the description thereof will be cited as it is. Therefore, the particulate filter 400 is accommodated in the internal passage of the exhaust passage constituting member 313 and is held by the exhaust passage constituting member 313.

  Since the catalyst device 610 just before the filter has the same configuration as the catalyst device 610 just before the filter in the fifth embodiment of the filter regeneration device B of the internal combustion engine, the description thereof is cited as it is. Therefore, the catalyst device 610 just before the filter is accommodated in the internal passage of the exhaust passage constituting member 314 and is held by the exhaust passage constituting member 314.

  Further, the extended temperature raising device 200 for the exhaust system of the first embodiment is provided such that the subsequent temperature raising member 210 is disposed in the exhaust passage 310 upstream of the catalyst immediately before the filter catalyst 610. Yes. In this embodiment, the exhaust passage constituting member 312 is connected to the exhaust upstream side of the exhaust passage constituting member 314. However, for example, another exhaust passage is provided between the exhaust passage constituting member 314 and the exhaust passage constituting member 312. A structural member or the like may be provided. The configuration of the temperature sensor 183, the position of the temperature sensor 183, and the content of control using the temperature sensor 183 is that the position of the temperature sensor 183 is on the exhaust gas downstream side of the diffusion plate 201 instead of the exhaust gas downstream side of the diffusion plate 102. Except for this, it is the same as in the case of the filter regeneration device C for the internal combustion engine of the first embodiment, so the description thereof will be cited as it is. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  Then, the catalyst device 610 just before the filter is heated by the extended temperature increasing device 200 of the exhaust system, the catalytic activity of the catalyst device 610 just before the filter is promoted, and the particulates with the exhaust gas heated by the oxidation reaction of the substance. The particulate filter 400 is regenerated by promoting the oxidation of the particulate matter collected by the filter 400. In this case, instead of the exhaust system extended temperature raising apparatus 200 of the first embodiment, the exhaust system according to the second embodiment, the third embodiment, or the fourth embodiment may be expanded. A temperature device 200 may be provided. Therefore, the air from the exhaust upstream side of the subsequent heating chamber 211 is the air included in the exhaust gas discharged from the internal combustion engine 300, the air supplied from the additional air pipe 250, or both of these airs. One of them.

  In the internal combustion engine filter regeneration device C according to the second embodiment, the exhaust passage 310 is strongly heated by the high-temperature exhaust gas from the exhaust system extended temperature raising device 200. The activation of the device 610 is promoted to form high-temperature exhaust gas in the exhaust passage 310, thereby promoting the oxidation of the particulate matter collected in the particulate filter 400, thereby strengthening the particulate filter 400. Played.

  Next, an embodiment of an exhaust gas purification apparatus for an internal combustion engine of the present invention will be described. FIG. 23 shows a first embodiment of the exhaust gas purification apparatus for an internal combustion engine. In the exhaust gas purification apparatus for an internal combustion engine according to the first embodiment, the particulate filter 400 that collects particulate matter contained in exhaust gas is provided in the exhaust passage 310, and the particulate filter in the exhaust passage 310 is provided. The exhaust gas purification apparatus of the internal combustion engine 300 is provided with the above-described filter rear catalyst device 620 provided with an oxidation catalyst that promotes the oxidation of a substance contained in the exhaust gas by a catalytic reaction on the exhaust gas downstream side of 400.

  As the description of the internal combustion engine 300 excluding the particulate filter 400 and the filter rear catalyst device 620, the description of the internal combustion engine 300 in the exhaust system temperature increasing device 100 according to the embodiment is used as it is. The same applies to other embodiments of the exhaust gas purification apparatus for an internal combustion engine, which will be described later.

  Since the particulate filter 400 has the same configuration as the particulate filter 400 in the first embodiment of the filter regeneration device A for the internal combustion engine, the description thereof will be cited as it is. Therefore, the particulate filter 400 is accommodated in the internal passage of the exhaust passage constituting member 313 and is held by the exhaust passage constituting member 313.

  The filter rear catalyst device 620 has the same configuration as the catalyst device 610 just before the filter in the fifth embodiment of the filter regeneration device B of the internal combustion engine. That is, the filter rear catalyst device 620 includes the oxidation catalyst and a casing that covers the oxidation catalyst except for both ends thereof. However, the filter rear catalyst is formed by the oxidation catalyst itself without providing such a casing. An apparatus may be configured. The filter rear catalyst device 620 is provided such that the cross section of the filter rear catalyst device 620 occupies the entire surface of the exhaust passage 310 in the direction of the exhaust flow, and the exhaust gas flowing through the exhaust passage 310 is entirely contained. Passes through the filter rear catalyst device 620. The oxidation catalyst provided in the filter rear catalyst device 620 is a diesel oxidation catalyst, but other types of oxidation catalysts may be used depending on the state of the internal combustion engine. One end of the filter rear catalyst device 620 is provided with an end face on the exhaust gas introduction side, and the other end of the filter rear catalyst device 620 is provided with an end face on the exhaust gas outlet side. The filter rear catalyst device 620 is accommodated in an internal passage of an exhaust passage constituting member, that is, a cylindrical exhaust passage constituting member 315 that is a member constituting the exhaust passage 310, and is held by the exhaust passage constituting member 315. Yes. The end face on the introduction side of the filter rear catalyst device 620 faces the exhaust upstream side in the exhaust passage 310, and the end face on the lead-out side faces the exhaust downstream side in the exhaust passage 310. The filter rear catalyst device 620 includes a stainless steel base material provided with a large number of thin through holes for flowing exhaust gas, and platinum (Pt) as an oxidation catalyst supported on the base material. The base material is not limited to stainless steel, and may be formed of, for example, cordierite or ceramic. The supported material is not limited to platinum (Pt), and may be any other material as long as it exhibits the function of an oxidation catalyst that promotes the oxidation of a substance contained in the exhaust gas by a catalytic reaction. . Then, when exhaust gas from the exhaust passage 310 on the exhaust upstream side enters the filter rear catalyst device 620 from the end surface on the introduction side, particles contained in the exhaust gas due to the catalytic reaction of the oxidation catalyst in the filter rear catalyst device 620. The substances are oxidized, and substances such as CO, HC, and SOF contained in the exhaust gas are oxidized to be changed to CO2 or water. The exhaust gas is heated by this oxidation reaction to a high temperature. The filter rear catalyst device of the present invention is not limited to this embodiment, and may be any device that exhibits a function of promoting oxidation of a substance contained in exhaust gas by a catalytic reaction. With the above configuration, the oxidation of the white smoke discharged from the particulate filter 400 by the oxidation reaction of the substance in the filter rear catalyst device 620 is promoted. The substances mentioned in the present invention include particulate substances contained in exhaust gas, and substances such as CO, HC, and SOF contained in exhaust gas.

  In the temperature raising device 100 for the exhaust system of the above embodiment, at least a portion of the temperature raising member 110 on the exhaust port 113a side is on the exhaust downstream side of the particulate filter 400 and the filter rear catalyst device 620. It is provided so as to be disposed in the exhaust passage 310 on the exhaust upstream side. In this embodiment, the exhaust passage constituent member 311 is connected between the exhaust passage constituent member 313 and the exhaust passage constituent member 315, but between the exhaust passage constituent member 313 and the exhaust passage constituent member 311. Alternatively, for example, another exhaust passage constituent member may be provided between the exhaust passage constituent member 311 and the exhaust passage constituent member 315. A temperature sensor 183 is provided in the exhaust passage 310 on the exhaust upstream side of the filter rear catalyst device 620 and on the exhaust downstream side of the diffusion plate 102, and detects the temperature of the exhaust passage 310. The output signal 183 is sent to the controller 170 via the electric wire 192j. Based on the signal from the temperature sensor 183, the supply of the liquid fuel, the supply of air, and the like are controlled such that the temperature on the exhaust upstream side of the filter rear catalyst device 620 does not exceed a predetermined temperature. The temperature sensor 183 is a thermocouple, but may be another device as long as the temperature can be detected. However, the number and position of the temperature sensors provided in the exhaust passage 310 are not limited by this embodiment. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  The filter rear catalyst device 620 is heated by the exhaust system temperature raising device 100 to promote the catalytic activity of the filter rear catalyst device 620, and the substance contained in the exhaust gas discharged from the particulate filter 400 is increased. The oxidation is promoted by a catalytic reaction.

  In the exhaust gas purification apparatus for an internal combustion engine according to the first embodiment, the exhaust passage 310 is heated by the high-temperature exhaust gas from the temperature raising device 100 of the exhaust system, so that the activity of the filter rear catalyst device 620 is increased. As a result, high temperature exhaust gas is formed in the exhaust passage 310, and is thereby accumulated in the internal combustion engine 300 and accumulated in the particulate filter 400, and the white smoke discharged from the particulate filter 400 is oxidized. decrease.

  FIG. 24 shows a second embodiment of the exhaust gas purification apparatus for an internal combustion engine. In the exhaust gas purification apparatus for an internal combustion engine according to the second embodiment, the particulate filter 400 that collects particulate matter contained in the exhaust gas is provided in the exhaust passage 310, and the particulate filter in the exhaust passage 310 is provided. The exhaust gas purification apparatus of the internal combustion engine 300 is provided with the above-described filter rear catalyst device 620 provided with an oxidation catalyst that promotes the oxidation of a substance contained in the exhaust gas by a catalytic reaction on the exhaust gas downstream side of 400. The exhaust gas purification apparatus for an internal combustion engine according to the second embodiment is the same as the exhaust gas purification apparatus for an internal combustion engine according to the first embodiment. Is provided.

  Since the particulate filter 400 has the same configuration as the particulate filter 400 in the first embodiment of the filter regeneration device A for the internal combustion engine, the description thereof will be cited as it is. Therefore, the particulate filter 400 is accommodated in the internal passage of the exhaust passage constituting member 313 and is held by the exhaust passage constituting member 313.

  The filter rear catalyst device 620 has the same configuration as that of the filter rear catalyst device 620 in the first embodiment of the exhaust gas purification apparatus for the internal combustion engine, and therefore, the description thereof is directly cited. Therefore, the filter rear catalyst device 620 is accommodated in the internal passage of the exhaust passage constituting member 315 and is held by the exhaust passage constituting member 315.

  Then, the exhaust system extended temperature raising device 200 of the first embodiment is configured such that the subsequent temperature raising member 210 is located on the exhaust downstream side of the particulate filter 400 and on the exhaust upstream side of the filter rear catalyst device 620. It is provided so as to be arranged in the exhaust passage 310. In this embodiment, the exhaust passage constituent member 312 is connected between the exhaust passage constituent member 313 and the exhaust passage constituent member 315, but between the exhaust passage constituent member 313 and the exhaust passage constituent member 312. Alternatively, for example, another exhaust passage constituent member may be provided between the exhaust passage constituent member 312 and the exhaust passage constituent member 315. The configuration of the temperature sensor 183, the position of the temperature sensor 183, and the content of control using the temperature sensor 183 is that the position of the temperature sensor 183 is on the exhaust gas downstream side of the diffusion plate 201 instead of the exhaust gas downstream side of the diffusion plate 102 Except for the above, it is the same as in the case of the exhaust gas purification apparatus for the internal combustion engine of the first embodiment, so the description thereof is cited as it is. Here, the controller 170 performs control based on the signal from the temperature sensor 183. However, the control may be performed without referring to the signal from the temperature sensor.

  Then, the filter rear catalyst device 620 is heated by the extended temperature raising device 200 of the exhaust system, the catalytic activity of the filter rear catalyst device 620 is promoted, and the substance contained in the exhaust gas discharged from the particulate filter 400 The oxidation is promoted by a catalytic reaction. In this case, instead of the exhaust system extended temperature raising apparatus 200 of the first embodiment, the exhaust system according to the second embodiment, the third embodiment, or the fourth embodiment may be expanded. A temperature device 200 may be provided. Therefore, the air from the exhaust upstream side of the subsequent heating chamber 211 is the air included in the exhaust gas discharged from the internal combustion engine 300, the air supplied from the additional air pipe 250, or both of these airs. One of them.

  In the exhaust gas purification apparatus for an internal combustion engine according to the second embodiment, the exhaust passage 310 is strongly heated by the high-temperature exhaust gas from the extended temperature raising device 200 of the exhaust system. The activity of 620 is promoted to form a higher-temperature exhaust gas, which is generated in the internal combustion engine 300 and accumulated in the particulate filter 400, and the white smoke discharged from the particulate filter 400 is oxidized and reduced. .

  FIG. 25 shows a third embodiment of the exhaust gas purification apparatus for an internal combustion engine. The exhaust gas purification apparatus for an internal combustion engine according to the third embodiment is the same as the exhaust gas purification apparatus for an internal combustion engine according to the first embodiment, except that the exhaust gas is introduced into the exhaust passage 310 upstream of the particulate filter 400 and into the exhaust gas. A catalyst immediately before filter device 610 is provided that includes an oxidation catalyst that promotes oxidation of contained substances by a catalytic reaction.

  Since the catalyst device 610 just before the filter has the same configuration as the catalyst device 610 just before the filter in the fifth embodiment of the filter regeneration device B of the internal combustion engine, the description thereof is cited as it is. Therefore, the catalyst device 610 just before the filter is accommodated in the internal passage of the exhaust passage constituting member 314 and is held by the exhaust passage constituting member 314.

  Further, other exhaust passage constituent members and the like are provided between the exhaust passage constituent member 314 and the exhaust passage constituent member 311. The exhaust passage constituent member 314 and the exhaust passage constituent member 311 are connected to each other. May be. The configuration, arrangement position, and control content using the temperature sensor 183 are the same as those in the exhaust gas purification apparatus for an internal combustion engine according to the first embodiment, and therefore, the description thereof is cited as it is.

  Since the other configuration is the same as that of the exhaust gas purification apparatus for the internal combustion engine of the first embodiment, the description thereof is cited as it is.

  In the exhaust gas purification apparatus for an internal combustion engine according to the third embodiment, the exhaust passage 310 is heated by the high-temperature exhaust gas from the temperature raising device 100 of the exhaust system, so that the activity of the filter rear catalyst device 620 is increased. As a result, a high temperature exhaust gas is formed in the exhaust passage 310, which is generated in the internal combustion engine 300 and accumulated in the particulate filter 400, and the white smoke discharged from the particulate filter 400 is oxidized. decrease. Furthermore, when the catalyst device immediately before the filter 610 has gained activity, the high-temperature exhaust gas that has passed through the catalyst device immediately before the filter 610 promotes the oxidation of the particulate matter collected by the particulate filter 400, and The particulate filter 400 is regenerated.

  FIG. 26 shows a fourth embodiment of the exhaust gas purification apparatus for an internal combustion engine. The exhaust gas purification apparatus for an internal combustion engine according to the fourth embodiment is the exhaust gas passage 310 between the subsequent temperature raising member 210 and the particulate filter 400 in the exhaust gas purification apparatus for the internal combustion engine according to the second embodiment. Further, the catalyst device 610 immediately before the filter is provided, which includes an oxidation catalyst that promotes oxidation of a substance contained in the exhaust gas by a catalytic reaction.

  Since the catalyst device 610 just before the filter has the same configuration as the catalyst device 610 just before the filter in the fifth embodiment of the filter regeneration device B of the internal combustion engine, the description thereof is cited as it is. Therefore, the catalyst device 610 just before the filter is accommodated in the internal passage of the exhaust passage constituting member 314 and is held by the exhaust passage constituting member 314.

  The exhaust passage constituting member 314 is connected to the exhaust upstream side of the exhaust passage constituting member 313, and the exhaust passage constituting member 312 is connected to the exhaust upstream side of the exhaust passage constituting member 314. However, for example, another exhaust passage constituent member may be provided between the exhaust passage constituent members 312, 314, and 313. The configuration of the temperature sensor 183, the position of the temperature sensor 183, and the contents of control using the temperature sensor 183 are on the exhaust gas downstream side of the diffusion plate 201 instead of the arrangement position being on the exhaust gas downstream side of the diffusion plate 102. Except for this, it is the same as in the case of the exhaust gas purification apparatus for the internal combustion engine of the first embodiment, and the description thereof is cited as it is.

  Since the other configuration is the same as that of the exhaust gas purification apparatus for the internal combustion engine of the second embodiment, the description thereof is cited as it is.

  In the exhaust gas purification apparatus for an internal combustion engine according to the fourth embodiment, the exhaust passage 310 is strongly heated by the high-temperature exhaust gas from the extended temperature raising device 200 of the exhaust system. The activation of 620 is promoted to form high-temperature exhaust gas in the exhaust passage 310, which causes the white smoke generated in the internal combustion engine 300 to accumulate in the particulate filter 400 and discharged from the particulate filter 400. Reduced by oxidation. Furthermore, when the catalyst device immediately before the filter 610 has gained activity, the high-temperature exhaust gas that has passed through the catalyst device immediately before the filter 610 promotes the oxidation of the particulate matter collected by the particulate filter 400, and The particulate filter 400 is regenerated.

  The internal combustion engine exhaust system temperature raising device, the exhaust system extended temperature raising device, the internal combustion engine filter regeneration device, and the internal combustion engine exhaust gas purification device according to the embodiments of the present invention are described above. And embodiments that combine the features of the variations thereof. Furthermore, the above-described embodiment and the modification thereof are the exhaust system temperature rising device, the exhaust system extended temperature increasing device, the internal combustion engine filter regeneration device using the same, and the exhaust gas purification device for the internal combustion engine. There are only a few examples. Therefore, according to the description of these embodiments and modifications thereof, the exhaust temperature raising device, the exhaust system extended temperature raising device, the internal combustion engine filter regeneration device using them, and the exhaust gas purification of the internal combustion engine are disclosed. Each device is not construed as limited.

DESCRIPTION OF SYMBOLS 100 Exhaust-system temperature rising apparatus 101 Introduction part 110 Temperature rising member 111 Temperature rising chamber 112 Bottom surface 113 Peripheral surface 113a Outlet 120 Storage member 121 One end 122 Other end 123 Crevice 124 Fuel passage 125 Opening 130 Heat generating member 132 Heat generating part 132a Protruding part 132aa Front end 140 Surrounding member 141 Crevice 142 Crevice 143 Bottom side edge 144 Opposite side edge 150 Liquid fuel piping 160 Air piping 161 Air outlet 195 Fuel tank 200 Exhaust system expansion temperature raising device 210 Subsequent temperature raising member 211 Subsequent ascent Greenhouse 212 Inlet 213 Outlet 214 Peripheral wall 215 Reservoir 230 Subsequent liquid fuel piping 240 Subsequent mixture piping 250 Additional air piping 300 Internal combustion engine 310 Exhaust passage 311 Exhaust passage component 312 Exhaust passage component 313 Exhaust passage component 3 14 Exhaust passage constituent member 315 Exhaust passage constituent member 400 Particulate filter 510 Injector 610 Catalytic device immediately before filter 620 Rear catalytic device of filter

Claims (18)

An exhaust system temperature raising device for raising the temperature of an exhaust passage of an internal combustion engine,
Inside, a temperature raising member in which a temperature raising chamber opened to the outside by a discharge port formed at the peripheral edge of the peripheral surface is formed by a bottom surface and a peripheral surface rising from the periphery of the bottom surface;
A cylindrical housing member disposed outside the temperature raising member, connected to the temperature raising member so that one end is open to the bottom surface and closed at the other end;
One end is connected to the inside of the housing member, and liquid fuel piping to be supplied with liquid fuel;
It has a rod-like heat generating part that generates heat when energized, and the heat generating part protrudes from the inside of the housing member through the opening to the temperature raising chamber, and there is a gap over the entire circumference between the heat generating part and the housing member. A heating member provided in the housing member to be formed;
A gap is formed from the bottom surface to the vicinity of the tip of the heat generating portion, and a protrusion is formed between the protruding portion protruding into the temperature raising chamber in the heat generating portion, and a gap is formed between the bottom edge and the bottom surface. A cylindrical surrounding member provided on the temperature raising member so that
One end is connected to the temperature raising member so as to be introduced into the temperature raising chamber as an air outlet, and air piping to be supplied with air is provided.
When the liquid fuel is supplied from the liquid fuel pipe to the housing member, air is supplied from the air pipe to the temperature raising chamber, and the heating member is energized, the liquid fuel supplied to the housing member is The vaporized liquid fuel is heated and vaporized by the heat generating portion, and diffuses into the temperature rising chamber from between the tip of the heat generating portion and the edge on the opposite bottom side of the surrounding member, and from the air pipe. Mixing with air to produce a primary gas mixture, the primary gas mixture is heated by the heat generating portion and burns continuously, and the liquid fuel accumulated on the bottom surface is heated by the combustion heat of the primary gas mixture. The vaporized liquid fuel diffuses into the temperature raising chamber and mixes with the air from the air pipe to form a secondary gas mixture, which is heated by the combustion heat of the primary gas mixture. Being burned Uni configured exhaust system Atsushi Nobori device.   The exhaust system temperature raising device according to claim 1, wherein the air pipe is oriented so that the air outlet avoids the tip of the heat generating portion and a swirling flow of air is formed in the temperature raising chamber.   The exhaust system temperature increasing device according to claim 1 or 2, wherein a porous member is disposed on the bottom surface of the temperature increasing chamber.   4. The flow rate of exhaust gas discharged from the temperature raising member is about 10% by weight or less of the flow rate of exhaust gas discharged from the internal combustion engine during idle operation. Exhaust system temperature riser. An extended temperature raising device for an exhaust system for raising the temperature of an exhaust passage of an internal combustion engine,
The temperature raising device for an exhaust system according to any one of claims 1 to 4,
It is formed in a cylindrical shape having a subsequent heating chamber formed inside, an inlet for opening the subsequent heating chamber on the exhaust upstream side, and an outlet for opening the subsequent heating chamber on the exhaust downstream side. At least a portion on the discharge port side of the temperature raising member of the temperature raising device passes through and is hermetically connected to the peripheral wall, and a subsequent rise in which a reservoir is formed on the peripheral wall around the temperature raising member. A temperature member;
A subsequent liquid fuel pipe that is connected to the subsequent temperature raising member so that one end communicates with the reservoir, and to which the liquid fuel is supplied;
The liquid fuel is supplied from the liquid fuel pipe to the housing member, air is supplied from the air pipe to the temperature raising chamber, and the heating member is energized. Further, the subsequent liquid fuel pipe is supplied to the storage section. When the liquid fuel is supplied, the primary air-fuel mixture continuously burns in the temperature raising chamber and the secondary air-fuel mixture burns, and the liquid fuel supplied to the storage section becomes the primary air-fuel mixture and the secondary air-fuel mixture. The subsequent temperature rising member heated by the temperature raising member heated by the combustion heat of the air-fuel mixture is vaporized, and the vaporized liquid fuel is diffused into the subsequent temperature raising chamber and introduced from the inlet of the subsequent temperature raising member. Mixing with air from the exhaust gas upstream side of the greenhouse to form a tertiary gas mixture, and this tertiary gas mixture is heated by the temperature raising member heated by the combustion heat of the primary gas mixture and the secondary gas mixture. And, constituting the exhaust system expansion Atsushi Nobori apparatus as temperature exhaust gas generated by the combustion is led to the exhaust downstream from the outlet of said subsequent heating member. An extended temperature raising device for an exhaust system for raising the temperature of an exhaust passage of an internal combustion engine,
The temperature raising device for an exhaust system according to any one of claims 1 to 4,
It is formed in a cylindrical shape having a subsequent heating chamber formed inside, an inlet for opening the subsequent heating chamber on the exhaust upstream side, and an outlet for opening the subsequent heating chamber on the exhaust downstream side. A subsequent temperature raising member in which at least a portion on the outlet side of the temperature raising member of the temperature raising device passes through and is hermetically connected to the peripheral wall;
An intermediate portion is provided on the exhaust downstream side of the subsequent temperature raising member so that heat exchange with the exhaust gas is possible, one end is connected to the subsequent temperature raising member so as to communicate with the subsequent temperature raising chamber, and the other end is A subsequent gas mixture line to be supplied with a mixture of liquid fuel and air;
The liquid fuel is supplied from the liquid fuel pipe to the housing member, air is supplied from the air pipe to the temperature raising chamber, and the heating member is energized. Further, the subsequent gas mixture pipe is supplied to the subsequent temperature raising chamber. When the air-fuel mixture is supplied, the primary air-fuel mixture continuously burns in the temperature raising chamber and the secondary air-fuel mixture burns, and the air-fuel mixture supplied to the subsequent temperature raising chamber diffuses into the subsequent temperature raising chamber. And mixed with air from the exhaust upstream side of the subsequent temperature raising chamber introduced from the inlet of the subsequent temperature raising member to generate a tertiary gas mixture, and the tertiary gas mixture is the primary gas mixture and the secondary gas mixture. Exhaust gas configured to be heated and combusted by the temperature raising member heated by the combustion heat of the exhaust gas, and high-temperature exhaust gas generated by the combustion is led out from the outlet of the subsequent temperature raising member to the exhaust downstream side Systematic ChoNoboru raising device. Furthermore, one end is provided on the exhaust upstream side of the subsequent heating chamber, and is provided with an additional air pipe to be supplied with air,
The exhaust according to claim 5 or 6, wherein at least a part of the air from the exhaust upstream side of the subsequent heating chamber introduced from the inlet of the subsequent heating member is air supplied from the additional air pipe. System extended temperature riser. In the internal combustion engine provided with a particulate filter for collecting particulate matter contained in the exhaust gas in the exhaust passage,
8. The exhaust system extended temperature raising device according to any one of claims 5 to 7, wherein the subsequent temperature raising member is disposed in the exhaust passage upstream of the particulate filter. ,
High-temperature exhaust gas generated by the combustion of the exhaust system extended temperature raising device is guided to the particulate filter, and the exhaust gas promotes oxidation of particulate matter collected in the particulate filter by the exhaust gas. A filter regeneration apparatus for an internal combustion engine, wherein the particulate filter is configured to regenerate. A particulate filter that collects particulate matter contained in the exhaust gas is provided in the exhaust passage, and supplementary fuel is supplied to the exhaust passage upstream of the particulate filter, and when the supplementary fuel burns, In a filter regeneration device for an internal combustion engine configured to regenerate the particulate filter by promoting oxidation of particulate matter collected by the particulate filter with high-temperature exhaust gas generated by combustion,
5. The exhaust system temperature raising apparatus according to claim 1, wherein at least the portion of the temperature raising member on the exhaust port side is upstream of the particulate filter and on the replenishing fuel. Provided to be disposed in the exhaust passage on the exhaust downstream side of the supply site,
The supplementary fuel supplied to the exhaust passage is heated by the temperature raising device of the exhaust system to promote vaporization, and the vaporized supplementary fuel is mixed with air from the exhaust upstream side of the temperature raising device of the exhaust system. To produce a replenished mixture, which is heated by the exhaust system temperature raising device and combusted, and the high-temperature exhaust gas produced by the combustion is collected in the particulate filter. A filter regeneration apparatus for an internal combustion engine, wherein the particulate filter is regenerated by promoting oxidation of a substance. A particulate filter that collects particulate matter contained in the exhaust gas is provided in the exhaust passage, and supplementary fuel is supplied to the exhaust passage upstream of the particulate filter, and when the supplementary fuel burns, In a filter regeneration device for an internal combustion engine configured to regenerate the particulate filter by promoting oxidation of particulate matter collected by the particulate filter with high-temperature exhaust gas generated by combustion,
8. The exhaust system temperature rising device according to claim 5, wherein the subsequent temperature raising member is located upstream of the particulate filter and downstream of the supplementary fuel supply site. Provided in the exhaust passage on the side,
The supplementary fuel supplied to the exhaust passage is heated by the extended temperature raising device of the exhaust system to promote vaporization, and the vaporized supplementary fuel is air from the exhaust upstream side of the extended temperature raising device of the exhaust system. To produce a supplementary gas mixture, which is heated by the extended temperature raising device of the exhaust system and combusted, and the high-temperature exhaust gas generated by this combustion is collected by the particulate filter. A filter regeneration device for an internal combustion engine, wherein the particulate filter is regenerated by promoting oxidation of the particulate matter.   In the exhaust passage between the temperature raising member or the subsequent temperature raising member and the particulate filter, a catalyst immediately before filter device provided with an oxidation catalyst for promoting oxidation of a substance contained in the exhaust gas by a catalytic reaction is provided. The filter regeneration device for an internal combustion engine according to claim 9 or 10.   The internal combustion engine filter regeneration device according to any one of claims 9 to 11, wherein fuel is supplied to the exhaust passage upstream of the particulate filter by exhaust gas.   The internal combustion engine filter regeneration according to any one of claims 9 to 11, wherein fuel supply to the exhaust passage upstream of the particulate filter is performed by fuel injection into the exhaust passage. apparatus. A particulate filter for collecting particulate matter contained in the exhaust gas is provided in the exhaust passage, and oxidation of the substance contained in the exhaust gas is promoted by a catalytic reaction on the exhaust upstream side of the particulate filter in the exhaust passage. A catalytic device immediately before the filter provided with an oxidation catalyst is provided, and when the catalytic activity of the catalytic device immediately before the filter is obtained, the particulate matter collected on the particulate filter with the exhaust gas heated by the oxidation reaction of the material In a filter regeneration device for an internal combustion engine configured to promote oxidation and regenerate the particulate filter,
The exhaust system temperature raising device according to any one of claims 1 to 4, wherein at least the portion on the outlet side of the temperature raising member is located in the exhaust passage upstream of the catalyst device immediately before the filter. Provided to be placed,
The catalyst device immediately before the filter is heated by the temperature raising device of the exhaust system, the catalytic activity of the catalyst device immediately before the filter is promoted, and is collected by the particulate filter with the exhaust gas heated by the oxidation reaction of the substance. A filter regeneration apparatus for an internal combustion engine, wherein the particulate filter is regenerated by promoting oxidation of particulate matter. A particulate filter for collecting particulate matter contained in the exhaust gas is provided in the exhaust passage, and oxidation of the substance contained in the exhaust gas is promoted by a catalytic reaction on the exhaust upstream side of the particulate filter in the exhaust passage. A catalytic device immediately before the filter provided with an oxidation catalyst is provided, and when the catalytic activity of the catalytic device immediately before the filter is obtained, the particulate matter collected on the particulate filter with the exhaust gas heated by the oxidation reaction of the material In a filter regeneration device for an internal combustion engine configured to promote oxidation and regenerate the particulate filter,
The exhaust temperature increasing device of any one of claims 5 to 7 is provided so that the subsequent temperature increasing member is disposed in the exhaust passage upstream of the catalyst device immediately before the filter. And
The catalyst device immediately before the filter is heated by the extended temperature raising device of the exhaust system to promote the catalytic activity of the catalyst device immediately before the filter, and is collected by the particulate filter with the exhaust gas heated by the oxidation reaction of the substance. A filter regeneration device for an internal combustion engine, wherein the particulate filter is regenerated by promoting oxidation of the particulate matter. A particulate filter that collects particulate matter contained in the exhaust gas is provided in the exhaust passage, and oxidation of the substance contained in the exhaust gas is promoted by a catalytic reaction on the exhaust downstream side of the particulate filter in the exhaust passage. An exhaust gas purification device for an internal combustion engine provided with a filter rear catalyst device provided with an oxidation catalyst,
5. The exhaust system temperature raising device according to claim 1, wherein at least the portion of the temperature raising member on the exhaust port side is on the exhaust downstream side of the particulate filter and behind the filter. Provided to be disposed in the exhaust passage upstream of the catalyst device,
The filter rear catalyst device is heated by the exhaust system temperature raising device to promote the catalytic activity of the filter rear catalyst device, and promote the oxidation of the substances contained in the exhaust gas discharged from the particulate filter by the catalytic reaction. An exhaust emission control device for an internal combustion engine configured to do so. A particulate filter that collects particulate matter contained in the exhaust gas is provided in the exhaust passage, and oxidation of the substance contained in the exhaust gas is promoted by a catalytic reaction on the exhaust downstream side of the particulate filter in the exhaust passage. An exhaust gas purification device for an internal combustion engine provided with a filter rear catalyst device provided with an oxidation catalyst,
8. The exhaust system extended temperature raising device according to any one of claims 5 to 7, wherein the subsequent temperature raising member is located downstream of the particulate filter and upstream of the filter rear catalyst device. Provided to be disposed in the exhaust passage of
The filter rear catalyst device is heated by the extended temperature raising device of the exhaust system, the catalytic activity of the filter rear catalyst device is promoted, and the oxidation of the substance contained in the exhaust gas discharged from the particulate filter is caused by a catalytic reaction. An exhaust purification device for an internal combustion engine configured to promote.   18. A filter just before catalyst device provided with an oxidation catalyst for promoting oxidation of a substance contained in exhaust gas by a catalytic reaction is provided in the exhaust passage upstream of the particulate filter in the exhaust passage. Exhaust gas purification device for internal combustion engine.

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