CN114412623A - Vehicle exhaust emission control method and device - Google Patents
Vehicle exhaust emission control method and device Download PDFInfo
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- CN114412623A CN114412623A CN202011171294.6A CN202011171294A CN114412623A CN 114412623 A CN114412623 A CN 114412623A CN 202011171294 A CN202011171294 A CN 202011171294A CN 114412623 A CN114412623 A CN 114412623A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000002347 injection Methods 0.000 claims description 31
- 239000007924 injection Substances 0.000 claims description 31
- 239000000446 fuel Substances 0.000 claims description 27
- 239000007789 gas Substances 0.000 description 26
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 21
- 239000000243 solution Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The application discloses a vehicle exhaust emission control method is applied to a first vehicle, the first vehicle comprises a diesel engine, when the vehicle exhaust emission is controlled, firstly, the first vehicle is determined to be in a running state with a fiercely changed accelerator, under the condition that the first vehicle is in the running state with the fiercely changed accelerator, an exhaust emission control parameter is determined, and according to the exhaust emission control parameter, the diesel engine is controlled to carry out exhaust emission.
Description
Technical Field
The application relates to the field of vehicle control, in particular to a vehicle exhaust emission control method and device.
Background
For convenience of description, the "driving state with a strongly changing accelerator" is referred to as a "dynamic condition", and the "driving state with a stable accelerator" is referred to as a "steady condition". It can be understood that the exhaust emission of the engine under the dynamic condition is often higher than the exhaust emission of the engine under the steady-state condition, but when the exhaust emission of the vehicle is controlled, the dynamic condition and the steady-state condition are not distinguished, and the exhaust emission under the dynamic condition can meet the emission standard only by reducing the exhaust emission under the steady-state condition. Due to the fact that the method further reduces the tail gas emission amount under the steady-state working condition and simultaneously sacrifices the power performance of the engine, the performance of the vehicle in the running state can be greatly reduced, and therefore the driving experience of a user is influenced.
Therefore, a solution to solve the above problems is urgently needed.
Disclosure of Invention
The technical problem to be solved by the application is to provide a vehicle exhaust emission control method and device to solve the problem that when vehicle exhaust is discharged, the performance of a vehicle in a driving state with a fiercely changed accelerator is greatly reduced and the driving experience of a user is influenced due to the fact that the exhaust emission amount in the driving state is not adjusted.
The embodiment of the application provides a vehicle exhaust emission control method, which is applied to a first vehicle, wherein the first vehicle comprises a diesel engine, when the vehicle exhaust emission is controlled, the first vehicle is firstly determined to be in a dynamic working condition, under the condition that the first vehicle is in the dynamic working condition, an exhaust emission control parameter is determined, and the diesel engine is controlled to carry out exhaust emission according to the exhaust emission control parameter. Therefore, the scheme controls the tail gas emission parameters of the vehicle under the dynamic working condition, ensures the vehicle performance under the dynamic working condition under the condition that the fuel combustion parameters under the dynamic working condition meet the tail gas emission standard, and improves the user experience.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic flow chart of a method for controlling vehicle exhaust emissions according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a vehicle exhaust emission control device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
For convenience of description, the "driving state with a strongly changing accelerator" is referred to as a "dynamic condition", and the "driving state with a stable accelerator" is referred to as a "steady condition". It can be understood that the exhaust emission of the engine under the dynamic condition is often higher than the exhaust emission of the engine under the steady-state condition, but when the exhaust emission of the vehicle is controlled, the dynamic condition and the steady-state condition are not distinguished, and the exhaust emission under the dynamic condition can meet the emission standard only by reducing the exhaust emission under the steady-state condition. Due to the fact that the method further reduces the tail gas emission amount under the steady-state working condition and simultaneously sacrifices the power performance of the engine, the performance of the vehicle in the running state can be greatly reduced, and therefore the driving experience of a user is influenced.
In order to solve the above problem, in the embodiment of the present application, when controlling the exhaust emission of the vehicle, first, a driving state in which an accelerator of the first vehicle changes drastically is determined, and in a case where the driving state in which the accelerator of the first vehicle changes drastically is determined, an exhaust emission control parameter is determined, and the diesel engine is controlled to perform the exhaust emission according to the exhaust emission control parameter. Therefore, the scheme controls the tail gas emission parameters of the vehicle under the dynamic working condition, ensures the vehicle performance under the dynamic working condition under the condition that the fuel combustion parameters under the dynamic working condition meet the tail gas emission standard, and improves the user experience.
Exemplary method
Referring to fig. 1, a schematic flow chart of a vehicle exhaust emission control method in an embodiment of the present application is shown. The method shown in FIG. 1, in one implementation, may be performed by a diesel engine, for example.
In the present embodiment, the method shown in FIG. 1 can be implemented, for example, by the following steps S101-S102.
S101: and determining an exhaust emission control parameter under the condition that the first vehicle is in a running state with a fierce accelerator change.
In this embodiment, the method shown in fig. 1 may be applied, for example, to a first vehicle including a diesel engine.
It is understood that, in order to adjust the exhaust emission parameter of the first vehicle under the dynamic condition, it may be determined that the first vehicle is in the dynamic condition first, and the exhaust emission control parameter is determined under the condition that the first vehicle is in the dynamic condition. The tail gas emission control parameters refer to various adjustable parameters capable of controlling the tail gas emission of the diesel engine.
In one possible embodiment, the first vehicle may be determined to be in a dynamic condition by an intake pressure requirement of the diesel engine, an actual intake pressure of the diesel engine, and a change in a rotational speed of the diesel engine. For example, if a difference between an intake pressure demand of the diesel engine and an actual intake pressure of the diesel engine is greater than a set pressure difference threshold, and a rotation speed change rate of the diesel engine is greater than a set rotation speed change rate threshold, the first vehicle is considered to be in a dynamic condition.
S102: and controlling the diesel engine to carry out exhaust emission according to the exhaust emission control parameters.
In this embodiment, after determining the exhaust emission control parameter of the first vehicle under the dynamic working condition, the controller controls the diesel engine to perform exhaust emission according to the exhaust emission control parameter.
In one possible embodiment, the Exhaust emission control parameter may include, for example, an output of a supercharger controller, wherein the output of the supercharger controller is larger, the boost pressure is increased faster, the total intake air amount of the engine is larger, the available Exhaust Gas circulation amount (EGR) is larger, the EGR is larger, and nitrogen oxide NO in the vehicle Exhaust Gas is larger under the premise that the fresh air amount is not changedxThe lower the content will be, and in this way the nitrogen oxides NO in the vehicle exhaust gas are made to be presentxThe content of (b) satisfies the emission standard of the vehicle in the driving state. The output of the augmentor controller may be determined, for example, based on the following parameters: the system comprises an intake pressure demand of the diesel engine, an actual intake pressure of the diesel engine, and a maximum output opening of the supercharger controller. The method comprises the steps of calculating the difference between the air inlet pressure demand of the diesel engine and the actual air inlet pressure of the diesel engine, dividing the difference by the air inlet pressure demand value of the diesel engine, and multiplying the obtained proportional coefficient by the maximum output opening of the supercharger controller to obtain the pre-control dynamic correction of the supercharger controller of the diesel engine. The maximum output opening of the supercharger controller is used for representing the magnitude of the diesel engine intake pressure value, and the intake pressure value is larger when the maximum output opening of the supercharger controller is larger. For example, the diesel engineThe air pressure demand is 2000hPa, the actual intake pressure of the diesel engine is 1200hPa, the difference between the intake pressure demand of the diesel engine and the actual intake pressure of the diesel engine is calculated, the difference is obtained as 800hPa, the difference is divided by the intake pressure demand of the diesel engine as 2000hPa, a proportionality coefficient of 0.4 is obtained, and then the maximum output opening of the supercharger controller is multiplied by, for example, 90%, to obtain the pre-controlled dynamic correction of the diesel supercharger controller as 36%. And after the diesel supercharger controller pre-control dynamic correction is obtained, adding the diesel supercharger controller pre-control dynamic correction to a set output value of the supercharger controller to obtain the output of the supercharger controller, and controlling the diesel engine to exhaust according to the output value of the supercharger controller. Because the output opening degree of the adopted supercharger controller is the maximum output opening degree of the supercharger controller, the larger the EGR of the vehicle is under the condition that the fresh air quantity is not changed, and the nitrogen oxide NO in the tail gas of the vehicle isxThe lower the content will be. By adopting the method, the excessive loss of the performance of the engine for ensuring that the tail gas emission amount meets the emission standard is avoided under the condition of ensuring that the tail gas emission amount under the dynamic working condition meets the emission standard, the performance of the engine is ensured to the maximum extent, and the user experience is improved.
In one possible embodiment, the exhaust emission control parameter may, for example, comprise a first air quantity threshold value, which is used to control the ratio of fresh air to recirculated exhaust gas in the total intake air quantity of the engine. On the premise that the total air input of the engine is not changed, the amount of fresh air is reduced, the amount of the recycled tail gas is increased, and the amount of the tail gas directly discharged is reduced due to the fact that the proportion of the tail gas used for recycling in the discharged tail gas is increased. The first air quantity threshold value is determined based on the following parameters: the control method comprises the steps of obtaining an intake pressure requirement of the diesel engine, an actual intake pressure of the diesel engine, a rotating speed of the diesel engine when the first vehicle is in a driving state with a stable accelerator, a load of the diesel engine when the first vehicle is in the driving state with the stable accelerator, and a second air quantity threshold value, wherein the second air quantity threshold value is used for controlling the diesel engine to carry out exhaust emission when the first vehicle is in the driving state with the stable accelerator. First, a table that is set in advance and reflects a correspondence relationship between the number of revolutions and the load of the diesel engine and a reference air amount is searched for from the number of revolutions of the diesel engine when the first vehicle is started but not running and the load of the diesel engine when the first vehicle is started but not running, and the reference air amount of the diesel engine is obtained by the search at the number of revolutions of the diesel engine when the first vehicle is in a running state in which the accelerator is stable and at the load of the diesel engine when the first vehicle is in a running state in which the accelerator is stable. The intake pressure demand of the diesel engine and the actual intake pressure of the diesel engine are defined as above, and the intake pressure demand of the diesel engine and the actual intake pressure of the diesel engine are differentiated and divided by the intake pressure demand of the diesel engine to obtain a proportional coefficient which is multiplied by the reference air quantity of the diesel engine to obtain a reference air quantity correction value, for example, after obtaining a proportional coefficient of 0.4, the proportional coefficient is multiplied by the reference air quantity of the diesel engine, for example, 10 mg/stroke, and the reference air quantity correction value is obtained as 4 mg/stroke. And after obtaining the reference air amount correction value, adding the reference air amount correction value to the second air amount threshold to obtain the first air amount threshold, and controlling the diesel engine to exhaust according to the first air amount threshold. On the basis of the second air amount threshold value, the proportion of fresh air and recirculated tail gas in the total air input of the engine is adjusted, the occupation ratio of the recirculated tail gas in the total air input is increased to the maximum extent, so that under the condition that the tail gas emission amount under the dynamic working condition meets the emission standard, the excessive loss of the performance of the engine for ensuring that the tail gas emission amount meets the emission standard is avoided, the performance of the engine is ensured to the maximum extent, and the user experience is improved.
In one possible embodiment, the exhaust emission control parameter may, for example, comprise a first threshold value for the advance of injection of oil, wherein the first threshold value for the advance of injection of oil is used for controlling nitrogen oxides NO in the exhaust gas of a vehiclexThe smaller the first fuel injection advance angle threshold value is, the lower the content of nitrogen oxide NO in the vehicle exhaust gas isxThe less the content of nitrogen oxide NO in the vehicle exhaust can be made by adjusting the first fuel injection advance angle threshold valuexThe content of (b) satisfies the emission standard of the vehicle in the driving state. In the present exemplary embodiment, the first injection advance threshold value is determined as a function of the following parameters: the device comprises an air inlet pressure requirement of the diesel engine, an actual air inlet pressure of the diesel engine, the rotating speed of the diesel engine when the first vehicle is in a running state with a stable accelerator, the load of the diesel engine when the first vehicle is in the running state with the stable accelerator, and a second fuel injection advance angle threshold, wherein the second fuel injection advance angle threshold is used for controlling the diesel engine to carry out exhaust emission when the first vehicle is in the running state with the stable accelerator. Firstly, a preset table reflecting the corresponding relation between the rotation speed and the load of the diesel engine and a reference fuel injection advance angle is searched according to the rotation speed of the diesel engine when the first vehicle is in a running state with a stable accelerator and the load of the diesel engine when the first vehicle is in the running state with the stable accelerator, and the reference fuel injection advance angle of the diesel engine under the rotation speed of the diesel engine when the first vehicle is in the running state with the stable accelerator and the load of the diesel engine when the first vehicle is in the running state with the stable accelerator are obtained through searching. The intake pressure requirement of the diesel engine and the actual intake pressure of the diesel engine are defined as above, the intake pressure requirement of the diesel engine and the actual intake pressure of the diesel engine are differentiated, and divided by the intake pressure requirement value of the diesel engine, so as to obtain a proportionality coefficient, which is multiplied by the reference fuel injection advance angle of the diesel engine, to obtain a reference fuel injection advance angle correction value, for example, after obtaining a proportionality coefficient of 0.4, the proportionality coefficient is multiplied by the reference fuel injection advance angle of the diesel engine, for example, 15 °, so as to obtain a reference fuel injection advance angle correction value of 6 °. After the reference fuel injection advance angle correction value is obtained, the reference fuel injection advance angle correction value is added to the second fuel injection advance angle threshold value to obtain the first fuel injection advance angle threshold value, and the diesel engine is controlled to exhaust according to the first fuel injection advance angle threshold valueOn the basis of the second fuel injection advance angle, the threshold value of the first fuel injection advance angle is reduced to the maximum extent, so that nitrogen oxides NO in the tail gas of the vehicle are reduced to the maximum extentxThe content of (2) avoids the excessive loss of the performance of the engine for ensuring that the exhaust emission meets the emission standard under the condition of ensuring that the exhaust emission under the driving state meets the emission standard, ensures the performance of the engine to the maximum extent, and improves the user experience.
Exemplary device
Based on the method provided by the above embodiment, the embodiment of the present application further provides an apparatus, which is described below with reference to the accompanying drawings.
Referring to fig. 2, a schematic structural diagram of a vehicle exhaust emission control device in an embodiment of the present application is shown. The apparatus may specifically include, for example:
the first determination module 201: the control system is used for determining an exhaust emission control parameter under the condition that the first vehicle is in a driving state with a fierce accelerator change;
the control module 202: and the control module is used for controlling the diesel engine to carry out exhaust emission according to the exhaust emission control parameters.
Through the device, the exhaust emission parameters of the vehicle in the running state with the drastically changed accelerator are controlled, the vehicle performance in the running state is ensured under the condition that the fuel combustion parameters in the running state meet the exhaust emission standard, and the user experience is improved.
In one implementation, the exhaust emission control parameter comprises an output of a supercharger controller, the output of the supercharger controller being determined in accordance with the following parameters:
the system comprises an intake pressure demand of the diesel engine, an actual intake pressure of the diesel engine, and a maximum output opening of the supercharger controller.
In one implementation, the exhaust emission control parameter comprises a first air quantity threshold, which is determined according to the following parameters:
the control method comprises the steps of controlling the diesel engine to carry out exhaust emission when the first vehicle is in a driving state with stable accelerator, and controlling the diesel engine to carry out exhaust emission when the first vehicle is in a driving state with stable accelerator.
In one implementation, the exhaust emission control parameter comprises a first fuel injection advance threshold, which is determined according to the following parameters:
the device comprises an air inlet pressure requirement of the diesel engine, an actual air inlet pressure of the diesel engine, the rotating speed of the diesel engine when the first vehicle is in a running state with a stable accelerator, the load of the diesel engine when the first vehicle is in the running state with the stable accelerator, and a second fuel injection advance angle threshold, wherein the second fuel injection advance angle threshold is used for controlling the diesel engine to carry out exhaust emission when the first vehicle is in the running state with the stable accelerator.
In one implementation, the apparatus further includes a second determining module configured to:
and determining that the first vehicle is in a running state with a fiercely changed accelerator according to the air inlet pressure requirement of the diesel engine, the actual air inlet pressure of the diesel engine and the rotation speed change of the diesel engine.
Since the apparatus 200 is an apparatus corresponding to the method provided in the above method embodiment, and the specific implementation of each unit of the apparatus 200 is the same as that of the above method embodiment, for the specific implementation of each unit of the apparatus 200, reference may be made to the description part of the above method embodiment, and details are not repeated here.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the attached claims
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A method for controlling exhaust emissions from a vehicle, applied to a first vehicle comprising a diesel engine, the method comprising:
determining an exhaust emission control parameter when the first vehicle is in a driving state with a drastically changed accelerator;
and controlling the diesel engine to carry out exhaust emission according to the exhaust emission control parameters.
2. The method of claim 1, wherein the exhaust emission control parameter comprises an output of a supercharger controller, the output of the supercharger controller being determined based on:
the system comprises an intake pressure demand of the diesel engine, an actual intake pressure of the diesel engine, and a maximum output opening of the supercharger controller.
3. The method according to claim 1, characterized in that the exhaust emission control parameter comprises a first air quantity threshold, which is determined according to the following parameters:
the control method comprises the steps of controlling the diesel engine to carry out exhaust emission when the first vehicle is in a driving state with stable accelerator, and controlling the diesel engine to carry out exhaust emission when the first vehicle is in a driving state with stable accelerator.
4. The method of claim 1, wherein the exhaust emission control parameter comprises a first oil injection advance threshold, the first oil injection advance threshold determined according to:
the device comprises an air inlet pressure requirement of the diesel engine, an actual air inlet pressure of the diesel engine, the rotating speed of the diesel engine when the first vehicle is in a running state with a stable accelerator, the load of the diesel engine when the first vehicle is in the running state with the stable accelerator, and a second fuel injection advance angle threshold, wherein the second fuel injection advance angle threshold is used for controlling the diesel engine to carry out exhaust emission when the first vehicle is in the running state with the stable accelerator.
5. The method of claim 1, further comprising:
and determining that the first vehicle is in a running state with a fiercely changed accelerator according to the air inlet pressure requirement of the diesel engine, the actual air inlet pressure of the diesel engine and the rotation speed change of the diesel engine.
6. A vehicular exhaust emission control apparatus applied to a first vehicle including a diesel engine, the apparatus comprising:
a first determination module: the control system is used for determining an exhaust emission control parameter under the condition that the first vehicle is in a driving state with a fierce accelerator change;
a control module: and the control module is used for controlling the diesel engine to carry out exhaust emission according to the exhaust emission control parameters.
7. The apparatus of claim 6, wherein the exhaust emission control parameter comprises an output of a supercharger controller, the output of the supercharger controller being determined in accordance with the following parameter:
the system comprises an intake pressure demand of the diesel engine, an actual intake pressure of the diesel engine, and a maximum output opening of the supercharger controller.
8. The apparatus of claim 6, wherein the exhaust emission control parameter comprises a first air quantity threshold, the first air quantity threshold being determined according to the following parameters:
the control method comprises the steps of controlling the diesel engine to carry out exhaust emission when the first vehicle is in a driving state with stable accelerator, and controlling the diesel engine to carry out exhaust emission when the first vehicle is in a driving state with stable accelerator.
9. The apparatus of claim 6, wherein the exhaust emission control parameter comprises a first oil injection advance threshold, the first oil injection advance threshold determined according to:
the device comprises an air inlet pressure requirement of the diesel engine, an actual air inlet pressure of the diesel engine, the rotating speed of the diesel engine when the first vehicle is in a running state with a stable accelerator, the load of the diesel engine when the first vehicle is in the running state with the stable accelerator, and a second fuel injection advance angle threshold, wherein the second fuel injection advance angle threshold is used for controlling the diesel engine to carry out exhaust emission when the first vehicle is in the running state with the stable accelerator.
10. The apparatus of claim 6, further comprising a second determining module configured to:
and determining that the first vehicle is in a running state with a fiercely changed accelerator according to the air inlet pressure requirement of the diesel engine, the actual air inlet pressure of the diesel engine and the rotation speed change of the diesel engine.
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| CN202011171294.6A CN114412623A (en) | 2020-10-28 | 2020-10-28 | Vehicle exhaust emission control method and device |
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| CN202011171294.6A CN114412623A (en) | 2020-10-28 | 2020-10-28 | Vehicle exhaust emission control method and device |
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| JP2929188B1 (en) * | 1998-03-13 | 1999-08-03 | 株式会社ゼクセル | Diesel engine fuel injection control device and method |
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Application publication date: 20220429 |