JP2005163603A - Exhaust emission control device for engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the theft of a vehicle, even if an occupant is out of a vehicle during regenerating a filter member. <P>SOLUTION: An exhaust emission control device comprises: a filter member disposed in an exhaust passage of an engine to trap exhaust particulates in exhaust gas; a manual regeneration switch operated by the occupant to start regenerating the filter member; a vehicle stop state detection means detecting a stop state of the vehicle; a key pull-out detection means detecting that a key has been pulled out of a key cylinder; a regeneration means regenerating the filter member. The regeneration means increases a temperature of the exhaust gas flowing into the filter member, and burning and removing the trapped exhaust particulates trapped by the filter member so as to regenerate the filter member, when the stop state of the vehicle is detected by the vehicle stop state detection means, the manual regeneration switch is operated to be in a manual regeneration start state, and the pullout of the key is detected by the key pull-out detection means. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an engine exhaust purification device, and more particularly to an engine exhaust purification device that includes a filter member that captures exhaust particulates in an exhaust passage.

Conventionally, in an engine, for example, a diesel engine, exhaust particulates (particulates) such as carbon contained in exhaust gas can be captured by a filter member arranged in an exhaust passage so as not to be released to the atmosphere, a so-called particulate filter. Has been done.
When the particulate filter is provided in this way, when the amount of exhaust particulate captured by the particulate filter reaches a saturation capacity that can be captured, it is necessary to burn the captured exhaust particulate and regenerate the filter function. is there.
Therefore, Patent Document 1 below includes a warning lamp that is turned on when the particulate filter is in a regeneration period, and a manual switch that can start regeneration of the particulate filter by a manual operation of an occupant. It is disclosed that, when a warning lamp is turned on and a manual switch is turned on by an occupant's operation, the fuel injection amount is increased for a predetermined time, and the exhaust gas particles are burned and removed by increasing the idle speed.
Japanese Patent Laid-Open No. 4-86319

However, according to Patent Document 1 described above, if the occupant leaves the vehicle during regeneration of the particulate filter, the vehicle may be stolen.
That is, it takes a relatively long time for regeneration. For example, it takes about 10 minutes for a small vehicle having a small particulate filter capacity, and about 30 minutes for a large car having a large capacity.
During the regeneration, the occupant often goes out to eat or take a break. Therefore, if the occupant leaves the vehicle while holding the key, the vehicle may be stolen during the regeneration.

  The present invention has been made in consideration of the above problems, and an object of the present invention is to exhaust an engine capable of preventing theft of the vehicle even when the occupant is outside the vehicle during regeneration of the filter member. It is to provide a purification device.

In order to achieve the above object, the present invention provides the following solution as a solution. That is, in the first configuration of the present invention, a filter member that is disposed in the exhaust passage of the engine and captures exhaust particulates in the exhaust gas;
A manual regeneration switch that can be operated by an occupant to start regeneration of the filter member;
Stop state detection means for detecting the stop state of the vehicle;
Key extraction detecting means for detecting that the key has been extracted from the key cylinder;
When the vehicle stop state is detected by the vehicle stop state detection means, the manual regeneration switch is operated to start manual regeneration, and when the key removal detection means detects the removal of the key, the filter member is Regeneration means for raising the temperature of the exhaust gas flowing in and regenerating the filter member by burning and removing the exhaust particulate trapped by the filter member is provided.

According to the first configuration of the present invention, the filter member is regenerated when the manual regeneration switch is operated to the manual regeneration start state and the removal of the key is detected.
Regeneration of the filter member with the key inserted is avoided, and theft of the vehicle can be prevented.

  In the second configuration of the present invention, the regeneration means changes the control mode of the engine to increase the temperature of the exhaust gas flowing into the filter member, and burns and removes the exhaust particulate captured by the filter member. Further, when the stop state of the vehicle is detected by the stop state detecting means, and the manual regeneration switch is operated to the manual regeneration start state when the stop state of the vehicle is detected, a predetermined time has elapsed since the operation was performed. The inside is configured to include auxiliary operating means that allows the operation of the engine to continue even if the key extraction detection means detects the extraction of the key.

Here, the regeneration of the filter member is usually performed by changing the control mode of the engine. In such a case, when the key is removed, the engine stops, so the regeneration of the filter member is started. I can't.
Therefore, in order to regenerate the filter member when removing the key, it is necessary to continue the operation of the engine even after the key is removed.
According to the second configuration of the present invention, when the stop state of the vehicle is detected and the manual regeneration switch is operated to the manual regeneration start state, the engine is operated even if the key is removed within a predetermined time after the operation is performed. Can be continued, and the regeneration of the filter member can be started.

In the third configuration of the present invention, the regeneration means may be configured such that when the extraction of the key is detected by the key extraction detection means within a predetermined time after the manual regeneration switch is operated to the manual regeneration start state, Configured to start playback,
The auxiliary actuating means is configured to continue the operation of the engine when the regeneration means starts regenerating the filter member even after the predetermined time has elapsed.

Although the manual regeneration switch is operated when the occupant intends to regenerate the filter member, the manual regeneration switch may accidentally touch the manual regeneration switch.
Here, if the filter member is regenerated when the key is removed, the occupant will operate the manual regeneration switch and remove the key as a series of operations in a relatively short time. If the time from when the switch is operated until the key is removed is within a predetermined time, it can be determined that the occupant is willing to regenerate the filter member.
According to the third configuration of the present invention, when the extraction of the key is detected within a predetermined period after the manual regeneration switch is operated to the manual regeneration start state, the regeneration of the filter member is started. The filter member can be regenerated when there is an intention to do so.

  In the fourth configuration of the present invention, when it is not detected that the key is extracted by the key extraction detecting means within a predetermined time after the manual regeneration switch is operated to the manual regeneration start state, the regeneration of the filter member is performed. It is comprised so that the alerting | reporting means which alert | reports to a passenger | crew that it is not performed.

  According to the fourth configuration of the present invention, when the key removal detection means does not detect the extraction of the key within a predetermined time after the manual regeneration switch is operated to the manual regeneration start state, the filter member is regenerated. Since the occupant is notified that the operation has not been performed, the occupant can be urged to regenerate the filter member.

  According to a fifth configuration of the present invention, the auxiliary actuating means, when the key withdrawal detecting means does not detect the removal of the key within a predetermined time after the manual regeneration switch is operated to the manual regeneration start state, The operation is stopped and the engine is stopped.

Normally, the manual regeneration switch is operated when the occupant intends to regenerate the filter member, but the manual regeneration switch may be accidentally touched. If the operation of is continued, there is a risk that fuel consumption will deteriorate.
According to the fifth configuration of the present invention, the operation of the auxiliary operating means is stopped when the key extraction detecting means does not detect the key extraction within a predetermined time after the manual regeneration switch is operated to the manual regeneration start state. In addition, since the operation of the engine is stopped, unnecessary operation when the occupant does not intend to regenerate the filter member can be suppressed, and deterioration of fuel consumption can be suppressed.

  According to the sixth configuration of the present invention, the auxiliary operation means stops the operation when the key is not operated to the key-off position within a predetermined time after the manual regeneration switch is operated to the manual regeneration start state. It is configured.

  According to the sixth configuration of the present invention, since the operation of the auxiliary operation means is stopped when the key is not operated to the key-off position within a predetermined time after the manual regeneration switch is operated to the manual regeneration start state, When the key is in the ON state and the operation of the engine can be continued without operating the auxiliary operation unit, unnecessary operation of the auxiliary operation unit can be suppressed.

According to the seventh configuration of the present invention, the exhaust passage on the upstream side of the filter member includes an oxidation catalyst,
Fuel injection control means for controlling the fuel injection amount and fuel injection timing for injecting fuel into the combustion chamber of the engine,
The regeneration means is constituted by the fuel injection control means, and increases the engine speed by increasing the injection amount of the main injection injected in the vicinity of the compression stroke, and executes the post-injection in the expansion stroke after the main injection. It is configured to do.

  According to the seventh configuration of the present invention, the exhaust gas temperature flowing into the filter member can be increased by the increase in the engine speed due to the increase in the main injection, and the oxidation can be performed by the post injection in the expansion stroke after the main injection. Unburnt fuel can be supplied to the catalyst, the exhaust gas temperature can be further increased by the oxidation reaction heat, and the filter member can be reliably regenerated.

  According to the eighth configuration of the present invention, the auxiliary operating means is configured to automatically stop the engine when the regeneration of the filter member by the regeneration means is completed.

  According to the eighth configuration of the present invention, the auxiliary operating means is configured to automatically stop the engine when the regeneration of the filter member by the regeneration means is completed. The operation can be suppressed, and the deterioration of fuel consumption can be suppressed.

According to the ninth configuration of the present invention, a filter member that is disposed in an exhaust passage of a vehicle engine equipped with an automatic transmission and captures exhaust particulates in exhaust gas;
A manual regeneration switch that can be operated by an occupant to start regeneration of the filter member;
Key extraction detecting means for detecting that the key has been extracted from the key cylinder;
When the manual regeneration switch is operated to start manual regeneration and the key removal detection means detects the removal of the key, the temperature of the exhaust gas flowing into the filter member rises and is captured by the filter member Regeneration means for regenerating the filter member by burning and removing exhaust particulates is provided.

According to the ninth configuration of the present invention, when the manual regeneration switch is operated to the manual regeneration start state and the removal of the key is detected, the filter member is regenerated.
Regeneration of the filter member with the key inserted is avoided, and theft of the vehicle can be prevented.
In addition, since a vehicle equipped with an automatic transmission has a so-called key interlock mechanism that prevents the key from being removed from the key cylinder unless the vehicle stops, the vehicle stop state is bothered by a vehicle speed sensor or the like. The regeneration of the filter member can be started based only on the detection of the removal of the key.

  According to the present invention, it is possible to prevent the vehicle from being stolen even when the occupant is outside the vehicle during the regeneration of the filter member.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an overall configuration diagram relating to the present embodiment, in which 1 is a four-cylinder diesel engine, and an intake passage 2 and an exhaust passage 3 are connected to the diesel engine 1.
In the intake passage 2, an air cleaner 4, an air flow sensor 5, a blower 6 a of a VGT turbocharger (variable geometry turbo) 6, an intercooler 7, an intake throttle valve 8, an intake air temperature are sequentially provided from the upstream side to the downstream side. A sensor 9 and an intake pressure sensor 10 are provided.
In the exhaust passage 3, a turbine 6 b of a VGT turbocharger (variable geometry turbo) 6 sequentially from the upstream side to the downstream side thereof, a movable vane 6 c that controls the flow rate of exhaust gas flowing into the turbine 6 b, and an oxidation catalyst 11. A particulate filter 12 is disposed.
Exhaust pressure sensors 13 and 14 are disposed upstream and downstream of the particulate filter 12, and detect the amount of exhaust particulates accumulated on the particulate filter 12 based on the differential pressure between the exhaust pressure sensors 13 and 14. It is configured as follows.
The particulate filter 12 is provided with a temperature sensor 15.
An exhaust gas recirculation passage 16 that connects the intake passage 2 and the exhaust passage 3 is provided. A negative pressure actuator type exhaust gas recirculation valve 17 and an exhaust gas are disposed in the middle of the exhaust gas recirculation passage 16. And a cooler 18 for cooling with the cooling water.
A fuel injection pump 19 supplies fuel from a fuel tank (not shown) to a common rail 20 as a pressure accumulating means.
The common rail 20 is connected to a fuel injection valve 21 (only one is shown in FIG. 1) disposed in the combustion chamber 1a of each cylinder, and the common rail 20 includes a fuel injection pressure sensor 22 and a common rail 19 interior. A safety valve 23 is provided for opening the valve when the pressure of the fuel accumulated in the tank reaches an allowable pressure or more and relieving the fuel on the fuel tank side.
Reference numeral 50 denotes a control unit for engine control. The above-described various sensors, the engine speed sensor 24, the shift position detection sensor 25, the vehicle speed sensor 26, a manual regeneration switch 27 described later, and an accelerator pedal sensor that detects the opening degree of the accelerator pedal. 28, a detection signal from a key state sensor 29 for detecting the state of a key switch 51 to be described later is input. Based on the input various detection signals, the above-described various actuators and a regeneration instruction lamp to be described later. 30, configured to control the warning lamp 31.

Next, the input / output relationship with various sensors and various actuators with respect to the control unit 50 will be described with reference to FIG.
The control unit 50 includes exhaust pressure sensors 13 and 14, an engine speed sensor 24, a shift position detection sensor 25 for detecting a shift position of a manual transmission (not shown), a vehicle speed sensor 26, and a manual of the particulate filter 12. It is detected whether the manual regeneration switch 27 for starting the regeneration, the accelerator pedal sensor 28, the operation state of the key, specifically, whether or not the key is removed from the key cylinder, and if the key is not removed, the key position is START. , ON, ACC (accessory position), and a detection signal from the key state sensor 29 that detects whether the position is operated.
Based on various input detection signals, the control unit 50 determines that the amount of exhaust particulate trapped by the intake throttle valve 8, the movable vane 6c, the exhaust gas recirculation valve 17, the fuel injection valve 21, and the particulate filter 12 is a predetermined amount or more. When the key release sensor 30 for prompting the occupant to perform manual regeneration and the manual regeneration switch 27 are operated to the manual regeneration start state, and the key state sensor 29 does not detect key removal within a predetermined time, Each of the warning lamps 31 that gives a warning to the passenger that the regeneration is not being performed is configured to be controlled.
Further, the control unit 50 is configured to operate by being supplied with electric power from the battery 52 via the key switch 51.
Further, 53 supplies power to the control unit 50 when the key state sensor 29 detects the removal of the key from the key cylinder within a predetermined time (for example, 3 seconds) after the manual regeneration switch 27 is turned on. And a relay switch (corresponding to auxiliary operating means in the claims) that allows the operation of the diesel engine 1 by the control unit 50 to continue until the regeneration of the particulate filter 12 is completed.

The regeneration of the particulate filter 12 is achieved by fuel injection control from the fuel injection valve 21.
Specifically, as shown by (a2) in FIG. 3, the injection amount of the main injection injected in the vicinity of the compression stroke top dead center is increased by a predetermined amount from the normal injection amount (a1), for example, idle rotation. As shown in FIG. 3, the main injection (a2) is increased while the number is increased from the normal idle rotation speed (for example, 750 rpm) to the first target rotation speed for manual regeneration (for example, 1750 rpm). ) In the subsequent expansion stroke, a predetermined amount of post-injection (b) is additionally executed.
As a result, the exhaust gas temperature rising due to the increase in the main injection and the oxidation reaction in the post-injection oxidation catalyst 11 can effectively increase the temperature of the exhaust gas flowing into the particulate filter 12. The exhaust particulate captured by the filter 12 can be removed by combustion, and the particulate filter 12 can be regenerated.

Next, regeneration control of the particulate filter 12 according to the embodiment will be described based on the flowchart of FIG.
4, various detection signals from the exhaust pressure sensors 13, 14, the engine speed sensor 24, the shift position detection sensor 25, the vehicle speed sensor 26, the manual regeneration switch 27, the accelerator pedal sensor 28, the key state sensor 29, and the like. Is read.
In the next step 2, the differential pressure with respect to the exhaust pressure sensors 13 and 14 is obtained.
In step S3, the amount of exhaust particulate trapped in the particulate filter 12 is calculated based on the differential pressure calculated in step S2. That is, when the trapped amount of exhaust particulates increases, the exhaust pressure upstream of the particulate filter 12 increases and the differential pressure increases. Therefore, the exhaust particulate amount captured by the particulate filter 12 based on the differential pressure is reduced. It is possible to ask.

In step S4, it is determined whether or not the exhaust particulate amount calculated in step S3 is equal to or greater than a predetermined value (for example, a value corresponding to the saturation of the particulate filter 12).
When YES is determined in step S4, that is, when the amount of exhaust particulates exceeds a predetermined value and the particulate filter 12 needs to be regenerated, the process proceeds to step S5 and the regeneration instruction lamp 30 is turned on.
If NO is determined in step S4, the process proceeds to step S6, the regeneration instruction lamp 30 is turned off, and the process returns.

In step S7, it is determined whether or not the vehicle is stopped. Specifically, when the vehicle speed is 0, the accelerator pedal is off (not depressed), and the shift position of the manual transmission is in the non-traveling position (neutral position), it is determined that the vehicle is stopped.
If the transmission is an automatic transmission and has a key interlock mechanism that can be removed only when the vehicle is stopped, the determination in step S7 can be omitted.
In subsequent step S8, it is determined whether or not the manual regeneration switch 27 has been operated to the manual regeneration start state.
When YES is determined in step S8, that is, when the manual regeneration switch is turned on while the vehicle is stopped, the process proceeds to step S9, the relay switch 53 is turned on, and the diesel engine 1 is operated even if the key is removed thereafter. Leave it in a state where it can continue.
In addition, when it determines with NO by either determination of step S7 or S8, that is, when the vehicle is traveling or when the manual regeneration switch 27 is not operated to the manual regeneration start state, regeneration is not performed. Return.

In step S10, it is determined whether or not the key is turned off within a predetermined time, for example, 3 seconds after the manual regeneration switch 27 is operated to the manual regeneration start state.
When YES is determined in the step S10, the process proceeds to a step S11 so as to determine whether or not the key is extracted within a predetermined time, for example, 3 seconds.
When YES is determined in the step S11, the process proceeds to a step S12, and the regeneration execution time T of the particulate filter 12 is calculated based on the exhaust particulate amount obtained in the step S3. That is, as the amount of exhaust particulates increases, the time required for regeneration completion becomes longer. Therefore, the regeneration execution time T is set longer, for example, a value within about 10 minutes, as the amount of exhaust particulates increases.
Accordingly, when the key is removed within 3 seconds after the manual regeneration switch 27 is operated to the manual regeneration start state, the operation of the diesel engine 1 is continued for a maximum of 10 minutes from that point.

In step S13, the timer t is counted up, and in step S14, it is determined whether or not the reproduction execution time T set in step S12 is larger than the timer t counted up in step S13, that is, reproduction execution is performed. It is determined whether time T has elapsed.
When YES is determined in the step S14, that is, when the regeneration execution time T has not elapsed, the process proceeds to a step S15, and the particulate filter 12 is regenerated. As described above, the specific method of regeneration is to increase the injection amount of the main injection injected near the top dead center of the compression stroke by a predetermined amount from the normal injection amount, for example, the idle rotation speed is set to a normal value. Increase the amount necessary to increase from the idling speed (for example, 750 rpm) to the first target speed (for example, 1750 rpm) for manual regeneration, and add a predetermined amount of post-injection in the expansion stroke after the main injection Done by running.

  When NO is determined in step S14, that is, when the regeneration execution time T has elapsed, the process proceeds to step S16, where the regeneration is terminated. In step S17, the relay switch 53 is turned off. The engine 1 is stopped.

Further, when NO is determined in step S11, that is, when the key is not removed even after a predetermined time has elapsed since the manual regeneration switch 27 is operated to the manual regeneration start state, the occupant intends to perform manual regeneration. If it is determined that there is not, the process proceeds to step S19, and the warning lamp 31 is turned on.
In step S20, the relay switch 53 is turned off. In step S21, the diesel engine 1 is stopped.

If NO is determined in step S10, that is, if the key is not turned off after a predetermined time has elapsed since the manual regeneration switch 27 is operated to the manual regeneration start state, the occupant intends to perform manual regeneration. If it is determined that there is no error, the process proceeds to step S22 and the warning lamp 31 is turned on.
Subsequently, in step S23, the relay switch 53 is turned off, and in step S24, the diesel engine 1 is put into a normal idle operation state.

Therefore, as shown in FIG. 5, when the manual regeneration switch 27 is turned on, the relay switch 53 is first turned on, and then the diesel engine 1 can be operated continuously even if the key is removed.
When the manual regeneration switch 27 is turned on and the key state sensor 29 detects the removal of the key within a predetermined time from when the manual regeneration start state is operated, it can be considered that the occupant intends to perform the manual regeneration. During the regeneration execution time T corresponding to the amount of exhaust particulate trapped by the particulate filter 12, the operation of the diesel engine 1 is continued and regeneration of the particulate filter 12 is executed.

  Further, as shown in FIG. 6, after the manual regeneration switch 27 is turned on and the relay switch 53 is turned on, if the removal of the key is not detected within a predetermined time, the relay switch 53 is turned off and the diesel engine 1 is stopped. Thus, the regeneration of the particulate filter 12 is not performed.

As described above, according to the present embodiment, the particulate filter 12 is regenerated when the manual regeneration switch 27 is operated to the manual regeneration start state and the removal of the key is detected.
The regeneration of the particulate filter 12 with the key inserted is avoided, and theft of the vehicle can be prevented.

  Further, even if the key is removed, when the manual regeneration start state is operated, a relay switch 53 is provided that allows the engine operation to continue for a predetermined time, and the manual regeneration switch 27 is operated to the manual regeneration start state. At this time, since the relay switch 53 is turned on, even if the key is removed, when the manual regeneration switch 27 is operated, the operation of the diesel engine 1 is continued and the particulate filter 12 can be regenerated.

  Further, when the extraction of the key is detected within a predetermined period after the manual regeneration switch 27 is operated to the manual regeneration start state, the regeneration of the particulate filter 12 is started, so that the occupant is willing to regenerate. The particulate filter 12 can be regenerated.

  When the key regeneration is not detected within a predetermined time after the manual regeneration switch 27 is operated to the manual regeneration start state, the warning lamp 31 informs the occupant that the particulate filter 12 is not regenerated. Therefore, regeneration of the filter member can be alerted to the occupant.

  Further, when the key regeneration is not detected within a predetermined time after the manual regeneration switch 27 is operated to the manual regeneration start state, the relay switch 53 is turned off and the operation of the diesel engine 1 is stopped. Unnecessary operation of the engine when there is no intention to regenerate the curate filter 12 can be suppressed, and deterioration of fuel consumption can be suppressed.

  Further, since the relay switch 53 is turned off when the key is not operated to the key-off position within a predetermined time after the manual regeneration switch 27 is operated to the manual regeneration start state, unnecessary operation of the relay switch 53 is suppressed. be able to.

  Further, the temperature of exhaust gas flowing into the particulate filter 12 can be increased by increasing the engine speed due to the increase in the main injection amount, and unburned fuel is supplied to the oxidation catalyst 11 by the post injection in the expansion stroke after the main injection. The exhaust gas temperature can be further raised by the oxidation reaction heat, and the particulate filter 12 can be reliably regenerated.

  Further, when the regeneration of the particulate filter 12 is completed, the relay switch 53 is turned off and the diesel engine 1 is stopped. Therefore, unnecessary operation of the diesel engine 1 after the regeneration is completed can be suppressed, and fuel consumption is deteriorated. Can be suppressed.

  In the present embodiment, the example in which the power of the battery 52 is supplied to the control unit 50 via the relay switch 53 in order to continue the operation of the diesel engine 1 even if the key is removed is shown. A small auxiliary battery may be provided, and the power of the auxiliary battery may be supplied to the control unit 50 via the relay switch 53.

In the present embodiment, the particulate filter 12 is regenerated only when the vehicle is stopped, and when the manual regeneration switch 27 is turned on, only the manual regeneration that regenerates the particulate filter 12 is performed. Forcible regeneration may be used in combination with regeneration of the particulate filter 12 when a predetermined regeneration condition is satisfied during medium (non-idle).
In forced regeneration, when a predetermined regeneration condition is satisfied, for example, the exhaust particulate amount is equal to or greater than a first predetermined value, the engine speed is low, a predetermined rotation region excluding high rotation, the engine load is low, and high load is excluded. When the predetermined load region and the vehicle speed are equal to or higher than the predetermined vehicle speed, a predetermined amount of post-injection is added in the expansion stroke after the main injection injected near the compression stroke top dead center.
Accordingly, since the exhaust gas temperature flowing into the particulate filter 12 can be increased by post-combustion by the post-injection oxidation catalyst 11 even while the vehicle is traveling, the exhaust particulates captured by the particulate filter 12 are combusted. Can be removed.
Accordingly, the frequency of manual regeneration execution can be reduced, and the troublesome manual regeneration associated with the operation of the manual regeneration switch 27 by the passenger can be reduced.

In this embodiment, the manual regeneration instruction lamp 30 and the warning lamp 31 are both visually informed to the occupant by the lamp. However, instead of the lamp, notification by sound (buzzer) is adopted. It may be.
In the case of a vehicle equipped with a navigation system, a message for prompting manual regeneration or a message for which manual regeneration is not performed may be displayed on the display screen of the navigation system.

  Moreover, although the example applied to a diesel engine as an engine was shown in this embodiment, you may make it apply to a gasoline engine in addition.

The whole block diagram concerning the embodiment of the present invention. The figure which shows the input-output relationship with respect to the control unit which concerns on embodiment of this invention. Explanatory drawing of the reproduction | regeneration control which concerns on embodiment of this invention. The reproduction | regeneration control flowchart concerning embodiment of this invention. The time chart regarding the reproduction | regeneration control which concerns on embodiment of this invention. The time chart regarding the reproduction | regeneration control which concerns on embodiment of this invention.

Explanation of symbols

1: diesel engine 11: oxidation catalyst 12: particulate filter (filter member)
13, 14: Exhaust pressure sensor (exhaust particulate quantity detection means)
21: Fuel injection valve 25: Shift position detection sensor (stop state detection means)
26: Vehicle speed sensor (stop state detection means)
27: Manual regeneration switch 28: Accelerator pedal sensor (stop state detection means)
29: Key state sensor (key extraction detection means)
30: Reproduction instruction lamp (instruction means)
31: Warning lamp (notification means)
50: Control unit (reproducing means)
51: Key switch 53: Relay switch (auxiliary operating means)

Claims (9)

A filter member disposed in the exhaust passage of the engine and capturing exhaust particulates in the exhaust gas;
A manual regeneration switch that can be operated by an occupant to start regeneration of the filter member;
Stop state detection means for detecting the stop state of the vehicle;
Key extraction detecting means for detecting that the key has been extracted from the key cylinder;
When the vehicle stop state is detected by the vehicle stop state detection means, the manual regeneration switch is operated to start manual regeneration, and when the key removal detection means detects the removal of the key, the filter member is An engine exhaust gas purification apparatus comprising: a regeneration means for regenerating the filter member by raising the temperature of the exhaust gas flowing in and burning and removing the exhaust particulate captured by the filter member. The regeneration means is configured to change the control mode of the engine to raise the temperature of the exhaust gas flowing into the filter member, to regenerate the filter member by burning and removing exhaust particulates captured by the filter member, and ,
When the stop state of the vehicle is detected by the stop state detection means, if the manual regeneration switch is operated to the manual regeneration start state, the key extraction detection means performs the key removal within a predetermined time after the operation is performed. 2. The engine exhaust gas purification apparatus according to claim 1, further comprising auxiliary operation means that allows the operation of the engine to be continued even if extraction is detected. The regeneration means is configured to start the regeneration of the filter member when the key removal detection means detects the removal of the key within a predetermined time after the manual regeneration switch is operated to the manual regeneration start state. ,
The said auxiliary | assistant action | operation means is comprised so that operation | movement of an engine may be continued even if the said predetermined time passes, when the reproduction | regeneration of the filter member by the said reproduction | regeneration means is started. Engine exhaust purification system.   Informing the occupant that the filter member is not being regenerated when the key removal detecting means does not detect the removal of the key within a predetermined time after the manual regeneration switch is operated to the manual regeneration start state. The engine exhaust gas purification apparatus according to claim 2, further comprising means.   The auxiliary actuating means stops the operation and stops the engine when no key removal is detected by the key removal detection means within a predetermined time after the manual regeneration switch is operated to the manual regeneration start state. The engine exhaust gas purification apparatus according to claim 2 or 4, wherein the engine exhaust gas purification apparatus is configured.   The auxiliary operating means is configured to stop the operation when the key is not operated to the key-off position within a predetermined time after the manual regeneration switch is operated to the manual regeneration start state. The engine exhaust gas purification apparatus according to any one of 2 to 5. In the exhaust passage upstream of the filter member, an oxidation catalyst,
Fuel injection control means for controlling the fuel injection amount and fuel injection timing for injecting fuel into the combustion chamber of the engine,
The regeneration means is constituted by the fuel injection control means, and increases the engine speed by increasing the injection amount of the main injection injected in the vicinity of the compression stroke, and executes the post-injection in the expansion stroke after the main injection. The exhaust emission control device for an engine according to any one of claims 1 to 6, wherein the exhaust emission control device for an engine is configured.   The engine exhaust purification device according to claim 2, 3 or 7, wherein the auxiliary operating means is configured to automatically stop the engine when the regeneration of the filter member by the regeneration means is completed. . A filter member that is disposed in an exhaust passage of a vehicle engine equipped with an automatic transmission and captures exhaust particulates in exhaust gas;
A manual regeneration switch that can be operated by an occupant to start regeneration of the filter member;
Key extraction detecting means for detecting that the key has been extracted from the key cylinder;
When the manual regeneration switch is operated to start manual regeneration and the key removal detection means detects the removal of the key, the temperature of the exhaust gas flowing into the filter member rises and is captured by the filter member An exhaust purification device for an engine, comprising: a regeneration means for regenerating the filter member by burning and removing exhaust particulates.

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