KR100810876B1 - Devices for purifying exhaust gas from an internal combustion engine - Google Patents

Abstract

A device for purifying exhaust gas of an internal combustion engine is provided to reduce a manufacturing cost and to improve life span by re-burning exhaust gas without using a filter and a catalyst. A device for purifying exhaust gas of an internal combustion engine comprises a first combustion pipe, a second combustion pipe(200), a re-burning chamber, an intake port unit, an exhaust port unit, and a second connecting hole unit(230). The first combustion pipe is made of a low heat conductive metal and maintains the re-burning chamber with high temperature. The second combustion pipe has a larger bore than the first combustion pipe. The first combustion pipe is included in the second combustion pipe. The second combustion pipe is made of high thermal conductive metal, and transmits heat from the internal combustion engine to the re-burning chamber. The re-burning chamber is composed of a first burning chamber and a second burning chamber, and burns exhaust gas. The intake port unit is formed at the first and the second combustion pipes where exhaust gas is flowed from an exhaust manifold. The outlet unit is located at the other side of the intake port, and discharges re-burned exhaust gas. The second combustion pipe has the second connecting hole unit. The second connecting hole unit has at least one connecting through hole to flow exhaust gas from the exhaust manifold to the second combustion chamber.

Description

DEVICES FOR PURIFYING EXHAUST GAS FROM AN INTERNAL COMBUSTION ENGINE}

The present invention relates to an apparatus for purifying exhaust gas of an internal combustion engine. More particularly, the environmental pollutant may be recycled by reheating the environmental pollutant contained in the exhaust gas discharged after combustion of the internal combustion engine using the heat of the internal combustion engine. A reducing gas purification apparatus is disclosed.

Exhaust gases of internal combustion engines generally include carbon dioxide, carbon monoxide, carbonated water, sulfides, nitrogen oxides, ammonia, ozone and oxidants. Gases such as carbon dioxide cause global warming problems, and other emissions such as carbon monoxide, hydrocarbons, nitrogen oxides, and sulfur oxides are harmful to humans. Therefore, the exhaust gas of internal combustion engines such as automobiles is the main culprit of environmental pollution, and the world is carrying out various regulations and research and development to improve the quality of exhaust gas of internal combustion engines.

The common rail diesel engine has been improved to be called clean diesel due to the development of reburn facilities and dust filters. The total amount of exhaust gas is 50% smaller than that of gasoline engines. This is because carbon oxides and hydrocarbons are much higher than those of diesel in the exhaust gas emitted by gasoline engines. On the other hand, the exhaust gas of diesel engines is more than 90% nitrogen and oxygen, and the ratio of regulated nitrogen oxides (NO _x ) and particulate matter (PM) is generally higher than that of gasoline engines. The substance is only 0.09% of the total exhaust gas. However, in order to realize even more stringent regulations, the European Union requires that Euro 4, which is implemented in 2005, require that PM and NOx emissions per kilometer of travel be less than 10% before the introduction of regulations. Therefore, in order to realize strict regulations on carbon dioxide, nitrogen oxides and particulate matters, it is a challenge to make many small cars with low CO ₂ emissions and to improve diesel cars with low nitrogen oxides and particulate matter.

There are two methods for reducing environmental pollutants contained in the exhaust gas of an internal combustion engine, an internal process system, a reburn method, and an external process system. In-combustion treatment is very difficult to achieve complete combustion because it is difficult to control completely by electronic control of fuel amount, mixing ratio of air and explosion for complete combustion. For example, in the case of Cummins In-Cylinder Solution, it is the most basic combustion technology to reduce the emissions of Cummins engines.The chemical action inside the engine combustion chamber until the fuel is injected from the injector and ignited Analyze the entire process of and change and design the optimization of the exhaust reaction. Durable parts that provide high performance such as noise / vibration / cooling / fuel efficiency / output after selecting the highest efficiency among various modeling by analyzing the optimum state of combustion phenomenon by applying this design lead analysis method It is necessary to develop the basic technology to satisfy the next generation environmental regulations. Therefore, there are challenges such as optimization design, development and application of analysis techniques, and development of high performance durable components. In addition, there is a disadvantage that it is not applicable to the internal combustion engine installed in the existing automobile or factory.

The post-combustion treatment method is easier to apply to existing internal combustion engines than the in-combustion treatment method, is easy to control, and manufacturing cost is low. There are two types of post-combustion treatment methods using a filter and a catalyst and a reburning method. Specifically, a plasma method, an electric heater method, an E-beam method, a diesel particle filter (DPF) method, and a diesel oxidation catalyst method ( Diesle Oxidation Catalyst (DOC), 4-way catalyst system, and the like. For the method using a filter catalyst, while maintaining a sufficiently high exhaust temperatures and the nitrogen oxides NO _x acts as an oxidizing agent for the carbon monoxide CO and hydrocarbon HC, while CO and HC will act as reducing agent for NO _x reducing the three components at the same time Can be. For example, in diesel diesel vehicles, the Diesel Oxidation Catalyst (DOC) is a platinum coated with a ceramic carrier coated with harmful CO and HC in the diesel vehicle exhaust gas and soluble organic matter (SOF) in particulate matter. It is reacted with the system catalyst to purify and reduce with harmless CO ₂ and H ₂ O, respectively. In addition, a diesel particulate filter trap (DPF) filters particulate matter (PM) in automobile exhaust gas through a filter, and further reduces particulate matter by using exhaust gas heat or electric heater of the engine. Sometimes. Post-combustion treatments have been extensively studied worldwide since the 1990s and are sold and installed as products. However, such a catalyst or filter method has a limited lifespan due to the disadvantage of corrosion or deterioration of performance over time, and requires replacement to maintain the required performance. In addition, there is a disadvantage to be solved, such as the complexity of the equipment and low efficiency compared to the cost.

There are two types of recombustion: exhaust gas recirculation and exhaust gas recombustion using an external combustion chamber. In the former case, the exhaust gas recombustion apparatus cools a part of the exhaust gas to reduce NOx generated in the combustion process of the fuel, and then supplies it back to the combustion chamber together with the intake air. This device is designed to satisfy the environmental regulations by applying low air: fuel ratio (A: F ratio) and to improve existing engine performance, power and fuel efficiency. Some apply. However, in order to apply this method, low-sulfur diesel fuel having a sulfur content of at least 50 ppm or less must be used to prevent the deposition of sulfate in the device to ensure durability, and the addition of an exhaust gas cooling device provides a powerful cooling device for the vehicle. There is a disadvantage that reinforcement is required.

In the conventional reburn method, a high voltage / high current is required for reburn, or additional devices such as fuel injection and ignition for reburn are required. Such latter attachment is similar to the main engine, ultimately adding an auxiliary combustion chamber. Therefore, both the reburn method using high voltage / high current and the reburn through fuel injection and ignition require additional design and manufacturing costs, and are complicated to control and operate.

The reburn apparatus of the conventional diesel engine described above requires additional devices such as high voltage / high current for reburn, fuel injection and ignition, and complicated control thereof. Therefore, there is a problem that the design and manufacturing cost of the reburn apparatus is complicated, and a complicated control system for controlling additional apparatus is required.

In order to solve the above problems, an object of the present invention is to provide an exhaust gas purifying apparatus of an internal combustion engine that is easy to design / operate / install and has a simple structure. That is, the exhaust gas reburn apparatus is provided to purify the environmental pollutants of the exhaust gas of the internal combustion engine, and the exhaust gas reburn of the simple structure that does not require additional devices and controls such as heating or fuel injection and ignition for reburning. It is an object to provide an exhaust gas purification apparatus for an internal combustion period using the apparatus.

It is still another object of the present invention to provide an exhaust gas purifying apparatus of an internal combustion engine that is semi-permanent in a reburn method rather than a filter or a catalyst method.

It is still another object of the present invention to provide a conventional method by coupling to a bolt / nut at a connection for fastening between the exhaust manifold and the muffler without additional work such as design changes or welding for the conventional exhaust line. An internal combustion engine that can be used by being detached from an exhaust line is to provide an exhaust gas purification device.

In order to solve the above problems, the present invention is to reburn and purify the environmental pollutant in the exhaust gas discharged from the internal combustion engine is provided in the exhaust line between the internal combustion engine and the gas outlet. In particular, it is attached to the rear part of the collection apparatus which is close to an internal combustion engine and collects high-temperature exhaust gas. For example, in the case of a diesel engine, the exhaust gas is reburned using the heat of the diesel engine as a heat source for reburning by being installed at a coupling part for fastening the exhaust manifold and the muffler.

The exhaust gas purifying apparatus of the internal combustion engine of the present invention for achieving the above object comprises a first combustion pipe made of a low thermal conductivity metal to keep the reburn chamber at a high temperature in order to reduce heat loss;

The second combustion pipe having a larger diameter than the first combustion pipe and spatially including the first combustion pipe and made of metal having high thermal conductivity to transfer high heat of the internal combustion engine or the exhaust gas collection device to the reburn chamber with low loss and fast ;

A reburn chamber portion configured to reburn the doubling gas, comprising a first combustion chamber inside the first combustion pipe and a second combustion chamber between the inside of the second combustion pipe and the outside of the first combustion pipe;

An inlet part provided in the first combustion pipe and the second combustion pipe to receive the exhaust gas from the exhaust manifold (or the exhaust gas collection device of the internal combustion engine);

A discharge port located at the other side of the suction port and outputting the reburned double gas;

And the second combustion pipe is provided with a second connection tool part having one or more connection holes formed therein so that the exhaust gas is sucked from the exhaust manifold into the second combustion chamber. . In addition, the first combustion pipe is shorter than the second combustion pipe and is provided to be located inside the second combustion pipe.

In addition, the exhaust gas purifying apparatus of the internal combustion engine according to the present invention, the first connection tool is formed in the first combustion pipe one or more connecting passages for input and output of the exhaust gas and the reburn gas of the second combustion chamber into the first combustion chamber It includes the thing including (連 結 孔口 部) more.

Further, according to the present invention, the first combustion pipe is characterized in that the high temperature heat of the reburn chamber is maintained by removing cast iron from the metal having low thermal conductivity.

In addition, according to the present invention, the second combustion pipe is made of stainless steel among metals having high thermal conductivity, and in particular, made of 27 kinds of stainless pipes, so that the high heat of the internal combustion engine or the exhaust gas collection device is low. It is characterized in that the transfer to the reburn chamber quickly.

The first and second combustion pipes may be manufactured in a polygonal shape including a cylindrical shape, and may be configured to have the same shape as an exhaust gas line.

The internal combustion engine exhaust gas environmental pollutant reburn apparatus of the present invention is a simple combustion internal combustion engine reburn apparatus that does not require additional devices such as heating or fuel injection and ignition, and complicated control. Therefore, it is a simple reburn device that does not require additional devices such as high voltage / high current, fuel injection and ignition, and a high control device like a reburn device of a conventional diesel engine. There is. In addition, there is no need for an externally applied power source as in the conventional reburn apparatus, and has a merit of being semi-permanent unlike a filter method having a limited lifetime. The present invention can be easily mounted on the connection portion for fastening between the existing exhaust manifold and the muffler without additional work such as design change or welding for the conventional exhaust line. have. The present invention has a 70% soot reduction effect after 2 parts to 3 minutes after the start of the diesel engine.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail based on drawing. 1 is a configuration diagram of a second combustion pipe in one embodiment of an exhaust gas purification apparatus of an internal combustion engine of the present invention. 2 is a configuration diagram of a first combustion pipe in an embodiment of the exhaust gas purification apparatus of the internal combustion engine of the present invention.

As shown in FIGS. 1 and 2, the first combustion pipe 100 is located inward and the second combustion pipe 200 is located outside the first combustion pipe, and the length of the first combustion pipe is the length of the second combustion pipe. Smaller, the second combustion pipe spatially includes the first combustion pipe. In addition, the first combustion pipe and the second combustion pipe are separated from each other to secure a combustion space. The exhaust gas combustion device secures the reburn chamber portion inside the first combustion pipe and inside the second combustion pipe. The space in the first combustion pipe is the first combustion chamber and the space between the first combustion pipe and the second combustion pipe is the second combustion chamber. The second combustion pipe is provided with a second connecting tool portion 230 which is composed of one or more connecting holes through which the exhaust gas can be sucked from the exhaust manifold (or the exhaust gas collecting device of the internal combustion engine) into the second combustion chamber. have. The first combustion pipe is provided with a first connection tool 130 comprising one or more connection holes through which the second combustion chamber and the first combustion chamber are connected to allow the exhaust gas and the reburn gas to enter and exit. The first combustion pipe is provided with a first front suction port 110 and a first side suction port 120 to input and output exhaust gas and combustion gas. The second combustion pipe is provided with a second front inlet 210 and a second side inlet 220 to allow the exhaust gas from the exhaust manifold to be sucked in. A small amount of exhaust gas is inputted through the first front inlet and the second front inlet, and a large amount of exhaust gas and reburned gas is inputted through the first side inlet, the second side inlet, the first connecting tool part, and the second connecting tool part. do. The first and second side intakes are larger than the size of the first and second connecting tool portions and are provided with two to four large holes in the side portions of the first and second combustion pipes. The exhaust gas sucked into the first and second combustion chambers from the exhaust manifold is reburned while passing through the reburn chamber section, the first connecting tool section and the second connecting tool section.

The reburned exhaust gas is discharged to the muffler through the discharge port. The outlet portion is composed of a first outlet, the first outlet is open one side of the first combustion pipe to form an outlet, the first combustion pipe extends toward the second combustion pipe in the form of a fallopian tube and the second combustion pipe and It is characterized in that one side of the outlet side of the second combustion pipe including the first wet joint to be wet-bonded.

The exhaust gas purification apparatus of the internal combustion engine of the present invention is, for example, when applied to a diesel engine, is installed inside the exhaust manifold and the muffler junction, and the second coupling portion 260 of the second combustion pipe is exhaust gas. It is attached to the manifold and muffler fastening site.

3 and 4 are exhaust gas purification apparatuses of an internal combustion engine that have been actually manufactured and tested for an embodiment of an exhaust gas purification apparatus of an internal combustion engine disclosed in FIGS. 1 and 2. 3 is a real picture from the upper side of the internal combustion engine exhaust gas purification apparatus tested in operation, and FIG. 4 is a real picture from the outlet side of the internal combustion engine exhaust gas purification apparatus tested in operation. Where the exhaust gas is discharged is an open portion inside the first combustion pipe, the first combustion pipe extends in a fallopian shape toward the second combustion pipe and is wet-bonded. As a result of the actual running test, it was confirmed that more than 70% of the exhaust gas purification effect occurred after the reburn chamber of the internal combustion engine exhaust gas satisfies the temperature condition necessary for reburning after 2-3 minutes after the engine was started.

Various modified structures are disclosed without being limited to the above embodiments of the present invention.

In another embodiment of the present invention, in the embodiment of Figures 1 and 2, the structure in which the first connection tool portion is omitted. That is, the exhaust gas purifying apparatus of the internal combustion engine according to another embodiment includes a first combustion pipe made of a low thermal conductivity metal to keep the reburn chamber at a high temperature in order to reduce heat loss;

The second combustion pipe having a larger diameter than the first combustion pipe and spatially including the first combustion pipe and made of metal having high thermal conductivity to transfer high heat of the internal combustion engine or the exhaust gas collection device to the reburn chamber with low loss and quickly ;

A reburn chamber portion configured to reburn the doubling gas, comprising a first combustion chamber inside the first combustion pipe and a second combustion chamber between the inside of the second combustion pipe and the outside of the first combustion pipe;

An inlet part provided in the first combustion pipe and the second combustion pipe to receive the exhaust gas from the exhaust manifold;

A discharge port located at the other side of the suction port and outputting the reburned double gas;

The second combustion pipe is characterized in that it is provided with a second connection tool portion (형성된 口 部) formed with one or more connection holes to suck the exhaust gas from the exhaust manifold to the second combustion chamber.

Various embodiments according to the present invention are disclosed in accordance with various configurations of the inlet and outlet.

First, the inlet part comprises a second front inlet and a second side inlet provided in the second combustion pipe, a first front inlet and a first side inlet provided in the first combustion pipe, and the second front inlet and the first inlet. The front intake port is a suction hole located in the center of the second combustion pipe and the first combustion pipe input section, respectively, and the second side intake port and the first side intake port are each provided with a plurality of side portions of the second combustion pipe and the first combustion pipe. Become; The outlet portion is composed of a first outlet, the first outlet is open one side of the first combustion pipe to form an outlet, the first combustion pipe extends toward the second combustion pipe in the form of a fallopian tube, the second combustion pipe Disclosed is an exhaust gas purifying apparatus for an internal combustion engine, comprising: closing one side of an outlet portion side of a second combustion pipe including a first wet joint portion to be wet-bonded thereto.

Second, the inlet part comprises a second front inlet and a second side inlet provided in the second combustion pipe and a first side inlet provided in the first combustion pipe, wherein the second front inlet and the first front inlet are respectively A suction hole located in the center of the second combustion pipe and the first combustion pipe input section, wherein the second side suction port and the first side suction port are provided in a plurality of side parts of the second combustion pipe and the first combustion pipe, respectively; When the discharge port is configured as a first discharge port, the first discharge port is open at one side of the first combustion pipe to form a discharge port, the first combustion pipe extends toward the second combustion pipe in the form of a fallopian tube and the second combustion pipe and Disclosed is an exhaust gas purifying apparatus for an internal combustion engine, including closing a side of an outlet portion of a second combustion pipe including a first wet joint portion to be wet bonded.

Various specific embodiments according to the present invention are disclosed according to various configurations depending on the size of the first combustion pipe and the second combustion pipe and the size of the first connection tool part and the second connection tool part.

First, the inner diameter of the first combustion pipe is 22.0 mm and the outer diameter is 25.0 mm;

The second combustion pipe is made of 27 kinds of stainless steel, the inner diameter is 35 mm and the outer diameter is 38 mm, and the second connection tool part provided in the second combustion pipe has 24 circular connection holes. The diameter of the connecting holes is 6.5 mm and the 24 circular connecting holes are provided at four positions of 15.0 mm, 25.0 mm, 35.0 mm, 45.0 mm, 55.0 mm and 65.0 mm, respectively, from the output of the exhaust gas purifier;

Disclosed is an exhaust gas purifying apparatus for an internal combustion engine, wherein the first suction port is a circular suction hole having a diameter of 6.5 mm located at the center of the first combustion pipe input section.

Secondly, the inner diameter of the first combustion pipe is 22.0 mm and the outer diameter is 25.0 mm, and the first connection tool part provided in the first combustion pipe has 56 circular connection holes with a diameter of 6.5 mm. Become;

The second combustion pipe is made of 27 kinds of stainless steel, the inner diameter is 35 mm, the outer diameter is 38 mm, the second connection tool portion provided in the second combustion pipe is a circular connection of 6.5 mm in diameter of the connection hole 24 troughs and twenty four circular connecting troughs are provided at four positions of 15.0 mm, 25.0 mm, 35.0 mm, 45.0 mm, 55.0 mm and 65.0 mm from the output end of the second combustion pipe, respectively;

Disclosed is an exhaust gas purifying apparatus for an internal combustion engine, wherein the first suction port is a circular suction hole having a diameter of 6.5 mm located at the center of the first combustion pipe input section.

As described above, although the present invention has been described with reference to the limited embodiments and the drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the following by those skilled in the art to which the present invention pertains. It is intended that the invention cover various modifications and variations that fall within the scope of the appended claims.

1 is a configuration diagram of a second combustion pipe in one embodiment of an exhaust gas purification apparatus of an internal combustion engine of the present invention.

2 is a configuration diagram of a first combustion pipe in an embodiment of the exhaust gas purification apparatus of the internal combustion engine of the present invention.

3 is a real picture of the internal combustion engine exhaust gas purification apparatus actually manufactured and tested in one embodiment of the present invention.

FIG. 4 is a real photograph at an outlet side of an internal combustion engine exhaust gas purifying apparatus manufactured and tested in an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: first combustion pipe 110: front inlet

120: side suction port 130: connection vents

150: outlet 160: first wet joint

200: second combustion pipe 210: second front inlet

220: second side inlet port 230: second connection vent section

260: second junction

Claims (9)

A first combustion pipe made of a low thermal conductivity metal to keep the reburn chamber at a high temperature in order to reduce heat loss; The second combustion pipe having a larger diameter than the first combustion pipe and spatially including the first combustion pipe and made of metal having high thermal conductivity to transfer high heat of the internal combustion engine or the exhaust gas collection device to the reburn chamber with low loss and fast ; A reburn chamber portion configured to reburn the doubling gas, comprising a first combustion chamber inside the first combustion pipe and a second combustion chamber between the inside of the second combustion pipe and the outside of the first combustion pipe; An inlet part provided in the first combustion pipe and the second combustion pipe to receive the exhaust gas from the exhaust manifold; A discharge port located at the other side of the suction port and outputting the reburned double gas; And the second combustion pipe is provided with a second connection tool part having one or more connection holes formed therein so that the exhaust gas is sucked from the exhaust manifold into the second combustion chamber. Engine exhaust gas purification device. A first combustion pipe made of a low thermal conductivity metal to keep the reburn chamber at a high temperature in order to reduce heat loss; The second combustion pipe having a larger diameter than the first combustion pipe and spatially including the first combustion pipe, the second combustion pipe being made of a metal having high thermal conductivity and transferring high heat of the internal combustion engine or the exhaust gas collection device to the reburn chamber with low loss and fast. ; A reburn chamber portion configured to reburn the doubling gas, comprising a first combustion chamber inside the first combustion pipe and a second combustion chamber between the inside of the second combustion pipe and the outside of the first combustion pipe; An inlet part provided in the first combustion pipe and the second combustion pipe to receive the exhaust gas from the exhaust manifold; A discharge port located at the other side of the suction port and outputting the reburned double gas; The second combustion pipe includes a second connection tool part having at least one connection hole formed therein to allow the exhaust gas to be sucked from the exhaust manifold into the second combustion chamber. An exhaust gas purifying apparatus for an internal combustion engine, characterized in that the pipe is provided with a first connecting tool portion having a connecting hole for connecting the second combustion chamber portion and the first combustion chamber. The method according to claim 1 or 2, The first combustion pipe is made of cast iron, the second combustion pipe is an exhaust gas purification apparatus of an internal combustion engine, characterized in that made of 27 kinds of stainless steel. The method according to claim 1 or 2, The inlet part comprises a second front inlet and a second side inlet provided in the second combustion pipe, a first front inlet and a first side inlet provided in the first combustion pipe, and the second front inlet and the first front inlet. Inlet ports are suction holes located in the center of the second combustion pipe and the first combustion pipe input section, respectively, the second side suction port and the first side suction port are provided in a plurality of side portions of the second combustion pipe and the first combustion pipe, respectively, ; The outlet portion is composed of a first outlet, the first outlet is open one side of the first combustion pipe to form an outlet, the first combustion pipe extends toward the second combustion pipe in the form of a fallopian tube and the second combustion pipe and Exhaust gas purification apparatus for an internal combustion engine, characterized in that one side of the outlet side of the second combustion pipe is closed, including the first wet joint portion that is wet-bonded. The method according to claim 1 or 2, The inlet part comprises a second front inlet and a second side inlet provided in the second combustion pipe, and a first side inlet provided in the first combustion pipe, and the second front inlet and the first front inlet respectively comprise a second combustion. A suction hole located in the center of the pipe and the first combustion pipe input section, wherein the second side suction port and the first side suction port are respectively provided in a plurality of side parts of the second combustion pipe and the first combustion pipe; The outlet portion is composed of a first outlet, the first outlet is open one side of the first combustion pipe to form an outlet, the first combustion pipe extends toward the second combustion pipe in the form of a fallopian tube and the second combustion pipe and Exhaust gas purification apparatus for an internal combustion engine, characterized in that one side of the outlet side of the second combustion pipe is closed, including the first wet joint portion that is wet-bonded. The method according to claim 1 or 2, The inlet part includes a second front suction port and a second side suction port provided in the second combustion pipe, a first front suction port and a first side suction port provided in the first combustion pipe, and the second front suction port and the first front suction port. Are suction holes located in the centers of the second combustion pipe and the first combustion pipe input section, respectively, and the second side suction port and the first side suction port are respectively provided in a plurality of side parts of the second combustion pipe and the first combustion pipe; The outlet portion is formed of a plurality of outlets between the first combustion pipe and the second combustion pipe, the exhaust gas purification apparatus of the internal combustion engine, characterized in that one side of the outlet side of the first combustion pipe is closed or opened. The method according to claim 1 or 2, The inlet part comprises a second front inlet and a second side inlet provided in the second combustion pipe, and a first side inlet provided in the first combustion pipe, and the second front inlet and the first front inlet respectively comprise a second combustion. A suction hole located in the center of the pipe and the first combustion pipe input section, wherein the second side suction port and the first side suction port are respectively provided in a plurality of side parts of the second combustion pipe and the first combustion pipe; The outlet portion is formed of a plurality of outlets between the first combustion pipe and the second combustion pipe, the exhaust gas purification apparatus of the internal combustion engine, characterized in that one side of the outlet side of the first combustion pipe is closed or opened. The method of claim 1, The inner diameter of the first combustion pipe is 22.0 mm and the outer diameter is 25.0 mm; The second combustion pipe is made of 27 kinds of stainless steel, the inner diameter is 35 mm and the outer diameter is 38 mm, the second connection tool portion provided in the second combustion pipe is provided with 24 circular connection holes and the circular The diameter of the connecting holes of 6.5 mm and the 24 circular connecting holes are provided at positions of 15.0 mm, 25.0 mm, 35.0 mm, 45.0 mm, 55.0 mm and 65.0 mm, respectively, from the output of the exhaust gas purifier; And the first inlet is a circular suction hole having a diameter of 6.5 mm located at the center of the first combustion pipe input section. The method according to claim 2, An inner diameter of the first combustion pipe is 22.0 mm and an outer diameter of 25.0 mm, and the first connection tool part provided in the first combustion pipe is provided with 56 circular connection holes having a diameter of 6.5 mm; The second combustion pipe is made of 27 kinds of stainless steel, the inner diameter is 35 mm, the outer diameter is 38 mm, the second connection tool portion provided in the second combustion pipe is a circular connection of 6.5 mm in diameter of the connection hole 24 troughs and twenty four circular connecting troughs are provided at four positions of 15.0 mm, 25.0 mm, 35.0 mm, 45.0 mm, 55.0 mm and 65.0 mm from the output end of the second combustion pipe, respectively; And the first inlet is a circular suction hole having a diameter of 6.5 mm located at the center of the first combustion pipe input section.

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