CN116906200A - Engine exhaust temperature control method and related device - Google Patents
Engine exhaust temperature control method and related device Download PDFInfo
- Publication number
- CN116906200A CN116906200A CN202311177693.7A CN202311177693A CN116906200A CN 116906200 A CN116906200 A CN 116906200A CN 202311177693 A CN202311177693 A CN 202311177693A CN 116906200 A CN116906200 A CN 116906200A
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- engine
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- rotating speed
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- 239000000446 fuel Substances 0.000 claims abstract description 30
- 230000003213 activating effect Effects 0.000 claims abstract description 16
- 230000004913 activation Effects 0.000 claims description 6
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 claims 1
- 238000011069 regeneration method Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012805 post-processing Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
- F02D41/0245—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus by increasing temperature of the exhaust gas leaving the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D2041/389—Controlling fuel injection of the high pressure type for injecting directly into the cylinder
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention discloses an engine exhaust temperature control method and a related device, which can determine whether an engine is in a dragging state or not based on the opening degree of an accelerator pedal; if the engine is in the dragging state, determining whether the current post-treatment temperature of the engine meets a preset temperature condition; if the post-treatment temperature meets the preset temperature condition, activating a corresponding cylinder according to the current rotating speed of the engine so as to perform in-cylinder braking; and controlling the fuel injection quantity of the inactive cylinder according to the rotating speed so as to improve the exhaust temperature of the engine. Therefore, in the dragging state, when the temperature reaches the condition, a part of cylinders are activated for braking, and a part of cylinders continue to spray fuel for burning to generate heat, so that the exhaust temperature is improved, and the exhaust temperature control effect is good.
Description
Technical Field
The invention relates to the field of engines, in particular to an engine exhaust temperature control method and a related device.
Background
In order to meet the emission regulations of higher standards and high thermal efficiency, the post-treatment technology becomes a key technology of the diesel engine, and the main function is to perform catalytic reduction reaction with NOx generated by the engine through urea injection. The key condition of the reaction is the temperature of the carrier, and only relatively high temperature can ensure high conversion efficiency. Generally, at temperatures below 180 ℃, the conversion efficiency of the reaction is low, and urea injection is stopped.
The engine has many reverse driving conditions, such as downhill and coasting, during operation. At this time, the driver generally has no power demand, the engine does not spray oil, and the output torque of the engine is negative torque for overcoming the friction of the engine. At this time, a large amount of heat is taken away by the post-treated cold air, so that the temperature of the carrier is seriously reduced, and the NOx is increased due to the lower temperature of the carrier when the engine is in the fuel injection operation again. Therefore, how to control the aftertreatment to maintain a certain exhaust temperature under the reverse driving condition is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the foregoing, the present invention provides a method and related apparatus for controlling engine exhaust gas temperature that overcomes or at least partially solves the foregoing problems.
In a first aspect, a method of controlling engine exhaust gas temperature includes:
determining whether the engine is in a dragging state based on the opening degree of an accelerator pedal;
if the engine is in the dragging state, determining whether the current post-treatment temperature of the engine meets a preset temperature condition;
if the post-treatment temperature meets the preset temperature condition, activating a corresponding cylinder according to the current rotating speed of the engine so as to perform in-cylinder braking;
and controlling the fuel injection quantity of the inactive cylinder according to the rotating speed so as to improve the exhaust temperature of the engine.
Optionally, in some optional embodiments, the determining whether the engine is in a dragging state based on the opening degree of the accelerator pedal includes:
if the opening of the accelerator pedal is equal to 0, determining that the engine is in the dragging state;
and if the opening degree of the accelerator pedal is not equal to 0, determining that the engine is not in the dragging state.
Optionally, in some optional embodiments, the determining whether the current aftertreatment temperature of the engine meets a preset temperature condition includes:
determining whether the current post-treatment temperature of the engine is within the range of the preset temperature condition, wherein the range of the preset temperature condition is obtained through calibration in advance;
if the post-treatment temperature is within the range of the preset temperature condition, determining that the post-treatment temperature accords with the preset temperature condition;
and if the post-treatment temperature is not in the range of the preset temperature condition, determining that the post-treatment temperature does not accord with the preset temperature condition.
Optionally, in some optional embodiments, the activating the corresponding cylinder according to the current rotation speed of the engine to perform in-cylinder braking includes:
and activating a corresponding number of cylinders according to the current rotating speed of the engine so as to perform in-cylinder braking, wherein the corresponding relation between the rotating speed and the number of the cylinders is obtained through pre-calibration.
Optionally, in some optional embodiments, the controlling the fuel injection amount of the inactive cylinder according to the rotation speed to increase the exhaust temperature of the engine includes:
and controlling the fuel injection quantity of the unactivated cylinder through the fuel injector according to the rotating speed to improve the exhaust temperature of the engine, wherein the corresponding relation between the rotating speed and the fuel injection quantity is obtained through pre-calibration.
Optionally, in certain alternative embodiments, the aftertreatment temperature is a temperature of selective catalytic reduction or a temperature at which the diesel particulate trap regenerates.
In a second aspect, an engine exhaust gas temperature control apparatus includes: the system comprises a state determining unit, a temperature determining unit, a brake activating unit and an oil injection control unit;
the state determining unit is used for determining whether the engine is in a dragging state or not based on the opening degree of the accelerator pedal;
the temperature determining unit is used for determining whether the current post-treatment temperature of the engine meets a preset temperature condition if the engine is in the dragging state;
the brake activation unit is used for activating corresponding cylinders according to the current rotating speed of the engine to perform in-cylinder braking if the post-treatment temperature meets the preset temperature condition;
and the fuel injection control unit is used for controlling the fuel injection quantity of the unactivated cylinder according to the rotating speed so as to improve the exhaust temperature of the engine.
Optionally, in some optional embodiments, the state determining unit includes: a first state subunit and a second state subunit;
the first state subunit is configured to determine that the engine is in the dragging state if the opening of the accelerator pedal is equal to 0;
and the second state subunit is configured to determine that the engine is not in the dragging state if the opening of the accelerator pedal is not equal to 0.
In a third aspect, a computer-readable storage medium has stored thereon a program that, when executed by a processor, implements the engine exhaust gas temperature control method of any one of the above.
In a fourth aspect, an electronic device includes at least one processor, at least one memory coupled to the processor, and a bus; the processor and the memory complete communication with each other through the bus; the processor is configured to invoke the program instructions in the memory to perform the engine exhaust temperature control method of any of the above.
By means of the technical scheme, the engine exhaust temperature control method and the related device can determine whether the engine is in a dragging state or not based on the opening degree of the accelerator pedal; if the engine is in the dragging state, determining whether the current post-treatment temperature of the engine meets a preset temperature condition; if the post-treatment temperature meets the preset temperature condition, activating a corresponding cylinder according to the current rotating speed of the engine so as to perform in-cylinder braking; and controlling the fuel injection quantity of the inactive cylinder according to the rotating speed so as to improve the exhaust temperature of the engine. Therefore, in the dragging state, when the temperature reaches the condition, a part of cylinders are activated for braking, and a part of cylinders continue to spray fuel for burning to generate heat, so that the exhaust temperature is improved, and the exhaust temperature control effect is good.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 illustrates a flow chart of a first engine exhaust temperature control method provided by the present disclosure;
FIG. 2 illustrates a flow chart of a second engine exhaust temperature control method provided by the present invention;
FIG. 3 illustrates a flow chart of a third engine exhaust temperature control method provided by the present invention;
FIG. 4 shows a flow chart of a fourth engine exhaust temperature control method provided by the present invention;
FIG. 5 is a flow chart illustrating a fifth engine exhaust temperature control method provided by the present invention;
FIG. 6 is a schematic diagram showing the structure of a first engine exhaust temperature control apparatus according to the present invention;
FIG. 7 is a schematic diagram showing the construction of a second engine exhaust temperature control apparatus according to the present invention;
fig. 8 shows a schematic structural diagram of an electronic device provided by the invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1, the present invention provides an engine exhaust gas temperature control method including: s100, S200, S300, and S400;
s100, determining whether an engine is in a dragging state or not based on the opening degree of an accelerator pedal;
alternatively, the engine of the present invention may be a multi-cylinder diesel engine, and the present invention is not limited thereto.
Alternatively, in general, the accelerator pedal opening in the drag state is equal to or close to 0 (both are understood to be equal to 0). Therefore, the present invention can determine whether or not the dragging state is the accelerator pedal opening.
For example, as shown in fig. 2, in some alternative embodiments, the S100 includes: s110 and S120;
s110, if the opening of the accelerator pedal is equal to 0, determining that the engine is in the dragging state;
and S120, if the opening degree of the accelerator pedal is not equal to 0, determining that the engine is not in the dragging state.
Optionally, in consideration of certain fault tolerance, the accelerator pedal opening degree of the present invention is equal to 0, and the accelerator pedal opening degree may also be close to 0 (the specific difference may be set according to actual needs).
If the engine is in the dragging state, executing S200;
s200, determining whether the current post-treatment temperature of the engine meets a preset temperature condition;
if the post-treatment temperature meets the preset temperature condition, executing S300;
optionally, as shown in fig. 3, in some optional embodiments, the S200 includes: s210, S220, and S230;
s210, determining whether the current aftertreatment temperature of the engine is within the range of the preset temperature condition;
the range of the preset temperature condition is obtained through calibration in advance;
if the post-treatment temperature is within the range of the preset temperature condition, executing S220;
s220, determining that the post-treatment temperature meets the preset temperature condition;
if the post-treatment temperature is not within the range of the preset temperature condition, executing S230;
s230, determining that the post-treatment temperature does not meet the preset temperature condition.
Optionally, the preset temperature condition according to the present invention may be set according to actual needs, for example, the range of the preset temperature condition may be set as follows: above 200 ℃ and below 350 ℃, as the invention is not limited in this respect.
S300, activating corresponding cylinders according to the current rotating speed of the engine so as to perform in-cylinder braking;
optionally, as shown in fig. 4, in some optional embodiments, the S300 includes: s310;
s310, activating a corresponding number of cylinders according to the current rotating speed of the engine so as to perform in-cylinder braking;
the corresponding relation between the rotating speed and the number of the cylinders is obtained through pre-calibration.
Alternatively, the correspondence between the rotational speed and the number of cylinders according to the present invention may be obtained based on actual calibration. For example, as shown in table 1, the present invention is not limited in this regard.
Alternatively, there is a different static friction torque at different rotational speeds, with the static friction torque increasing as the rotational speed increases. Therefore, the higher the engine speed, the lower the number of cylinders for opening in-cylinder braking, so that the increase in braking torque can be reduced, and the same total negative torque as low speed (negative torque=static friction torque+braking torque) can be achieved.
Alternatively, the present invention may activate an odd number of cylinders for in-cylinder braking in addition to the even number of cylinders in the table, as the present invention is not limited in this regard.
And S400, controlling the fuel injection quantity of the inactive cylinder according to the rotating speed so as to improve the exhaust temperature of the engine.
Optionally, as shown in fig. 5, in some optional embodiments, the S400 includes: s410;
s410, controlling the fuel injection quantity of an unactivated cylinder through a fuel injector according to the rotating speed so as to improve the exhaust temperature of the engine;
the corresponding relation between the rotating speed and the oil injection quantity is obtained through pre-calibration.
Alternatively, the corresponding relation between the rotating speed and the oil injection quantity can be obtained based on actual calibration. For example, as shown in Table 2, the present invention is not limited in this regard.
Alternatively, taking in-cylinder braking of 2 cylinders as an example, the engine has larger negative torque (negative torque=static friction torque+2 cylinder braking torque), and at this time, the other 4 cylinders (6 cylinders as an example) can inject more diesel oil to overcome part of the negative torque, and obviously, compared with pure reverse towing oil injection, the scheme can further improve the exhaust temperature.
Optionally, in certain alternative embodiments, the aftertreatment temperature is a temperature of selective catalytic reduction or a temperature at which the diesel particulate trap regenerates.
As shown in fig. 6, the present invention provides an engine exhaust gas temperature control apparatus comprising: a state determining unit 100, a temperature determining unit 200, a brake activating unit 300, and an injection control unit 400;
the state determining unit 100 is configured to determine whether the engine is in a dragging state based on the opening degree of the accelerator pedal;
the temperature determining unit 200 is configured to determine whether a current post-processing temperature of the engine meets a preset temperature condition if the engine is in the dragging state;
the brake activation unit 300 is configured to activate a corresponding cylinder according to a current rotation speed of the engine to perform in-cylinder braking if the post-processing temperature meets the preset temperature condition;
the fuel injection control unit 400 is configured to control the fuel injection amount of the inactive cylinder according to the rotation speed, so as to increase the exhaust temperature of the engine.
Alternatively, as shown in fig. 7, in some alternative embodiments, the state determining unit 100 includes: a first state subunit 110 and a second state subunit 120;
the first state subunit 110 is configured to determine that the engine is in the dragging state if the accelerator pedal opening is equal to 0;
the second state subunit 120 is configured to determine that the engine is not in the dragging state if the accelerator pedal opening is not equal to 0.
Optionally, in some optional embodiments, the temperature determining unit 200 includes: a temperature range determination subunit, a first temperature subunit, and a second temperature subunit;
the temperature range determining subunit is used for determining whether the current post-treatment temperature of the engine is in the range of the preset temperature condition or not, wherein the range of the preset temperature condition is obtained through calibration in advance;
the first temperature subunit is configured to determine that the post-processing temperature meets the preset temperature condition if the post-processing temperature is within the range of the preset temperature condition;
and the second temperature subunit is configured to determine that the post-processing temperature does not meet the preset temperature condition if the post-processing temperature is not within the range of the preset temperature condition.
Optionally, in some optional embodiments, the brake activation unit 300 includes: a brake activation subunit;
and the brake activation subunit is used for activating a corresponding number of cylinders according to the current rotating speed of the engine so as to perform in-cylinder braking, wherein the corresponding relation between the rotating speed and the number of the cylinders is obtained through pre-calibration.
Optionally, in some optional embodiments, the fuel injection control unit 400 includes: a fuel injection control subunit;
and the fuel injection control subunit is used for controlling the fuel injection quantity of the unactivated cylinder through the fuel injector according to the rotating speed so as to improve the exhaust temperature of the engine, wherein the corresponding relation between the rotating speed and the fuel injection quantity is obtained through pre-calibration.
The present invention provides a computer-readable storage medium having stored thereon a program which, when executed by a processor, implements the engine exhaust gas temperature control method of any one of the above.
As shown in fig. 8, the present invention provides an electronic device 70, the electronic device 70 comprising at least one processor 701, and at least one memory 702, bus 703 connected to the processor 701; wherein, the processor 701 and the memory 702 complete communication with each other through the bus 703; the processor 701 is configured to invoke program instructions in the memory 702 to perform the engine exhaust gas temperature control method of any of the above.
In the present invention, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (10)
1. An engine exhaust gas temperature control method, characterized by comprising:
determining whether the engine is in a dragging state based on the opening degree of an accelerator pedal;
if the engine is in the dragging state, determining whether the current post-treatment temperature of the engine meets a preset temperature condition;
if the post-treatment temperature meets the preset temperature condition, activating a corresponding cylinder according to the current rotating speed of the engine so as to perform in-cylinder braking;
and controlling the fuel injection quantity of the inactive cylinder according to the rotating speed so as to improve the exhaust temperature of the engine.
2. The method of claim 1, wherein determining whether the engine is in a motoring state based on the accelerator pedal opening comprises:
if the opening of the accelerator pedal is equal to 0, determining that the engine is in the dragging state;
and if the opening degree of the accelerator pedal is not equal to 0, determining that the engine is not in the dragging state.
3. The method of claim 1, wherein the determining whether the current aftertreatment temperature of the engine meets a preset temperature condition comprises:
determining whether the current post-treatment temperature of the engine is within the range of the preset temperature condition, wherein the range of the preset temperature condition is obtained through calibration in advance;
if the post-treatment temperature is within the range of the preset temperature condition, determining that the post-treatment temperature accords with the preset temperature condition;
and if the post-treatment temperature is not in the range of the preset temperature condition, determining that the post-treatment temperature does not accord with the preset temperature condition.
4. The method of claim 1, wherein activating the respective cylinders for in-cylinder braking based on the current rotational speed of the engine comprises:
and activating a corresponding number of cylinders according to the current rotating speed of the engine so as to perform in-cylinder braking, wherein the corresponding relation between the rotating speed and the number of the cylinders is obtained through pre-calibration.
5. The method of claim 1, wherein controlling the amount of fuel injected to the deactivated cylinders to increase the exhaust temperature of the engine based on the rotational speed comprises:
and controlling the fuel injection quantity of the unactivated cylinder through the fuel injector according to the rotating speed to improve the exhaust temperature of the engine, wherein the corresponding relation between the rotating speed and the fuel injection quantity is obtained through pre-calibration.
6. The method of claim 1, wherein the aftertreatment temperature is a temperature of selective catalytic reduction or a temperature of regeneration of a diesel particulate trap.
7. An engine exhaust gas temperature control apparatus, comprising: the system comprises a state determining unit, a temperature determining unit, a brake activating unit and an oil injection control unit;
the state determining unit is used for determining whether the engine is in a dragging state or not based on the opening degree of the accelerator pedal;
the temperature determining unit is used for determining whether the current post-treatment temperature of the engine meets a preset temperature condition if the engine is in the dragging state;
the brake activation unit is used for activating corresponding cylinders according to the current rotating speed of the engine to perform in-cylinder braking if the post-treatment temperature meets the preset temperature condition;
and the fuel injection control unit is used for controlling the fuel injection quantity of the unactivated cylinder according to the rotating speed so as to improve the exhaust temperature of the engine.
8. The apparatus according to claim 7, wherein the state determining unit includes: a first state subunit and a second state subunit;
the first state subunit is configured to determine that the engine is in the dragging state if the opening of the accelerator pedal is equal to 0;
and the second state subunit is configured to determine that the engine is not in the dragging state if the opening of the accelerator pedal is not equal to 0.
9. A computer-readable storage medium having a program stored thereon, wherein the program when executed by a processor implements the engine exhaust gas temperature control method according to any one of claims 1 to 6.
10. An electronic device comprising at least one processor, and at least one memory, bus coupled to the processor; the processor and the memory complete communication with each other through the bus; the processor is configured to call up program instructions in the memory to execute the engine exhaust gas temperature control method according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311177693.7A CN116906200A (en) | 2023-09-13 | 2023-09-13 | Engine exhaust temperature control method and related device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311177693.7A CN116906200A (en) | 2023-09-13 | 2023-09-13 | Engine exhaust temperature control method and related device |
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| CN116906200A true CN116906200A (en) | 2023-10-20 |
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| CN202311177693.7A Pending CN116906200A (en) | 2023-09-13 | 2023-09-13 | Engine exhaust temperature control method and related device |
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| CN110486175A (en) * | 2018-05-14 | 2019-11-22 | 罗伯特·博世有限公司 | Method for running the motor brake in internal combustion engine |
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| CN115003901A (en) * | 2020-01-28 | 2022-09-02 | 卡明斯公司 | Engine control for exhaust aftertreatment thermal management |
| CN115405431A (en) * | 2021-05-28 | 2022-11-29 | 现代自动车株式会社 | Engine control device and control method for commercial vehicle |
-
2023
- 2023-09-13 CN CN202311177693.7A patent/CN116906200A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486175A (en) * | 2018-05-14 | 2019-11-22 | 罗伯特·博世有限公司 | Method for running the motor brake in internal combustion engine |
| JP2021008839A (en) * | 2019-06-28 | 2021-01-28 | 井関農機株式会社 | Work vehicle |
| CN112392611A (en) * | 2019-08-19 | 2021-02-23 | 卡特彼勒公司 | Temperature management of aftertreatment system during compression braking |
| CN115003901A (en) * | 2020-01-28 | 2022-09-02 | 卡明斯公司 | Engine control for exhaust aftertreatment thermal management |
| CN115405431A (en) * | 2021-05-28 | 2022-11-29 | 现代自动车株式会社 | Engine control device and control method for commercial vehicle |
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