CN114183264B - Control method and device for engine operation mode - Google Patents
Control method and device for engine operation mode Download PDFInfo
- Publication number
- CN114183264B CN114183264B CN202111544582.6A CN202111544582A CN114183264B CN 114183264 B CN114183264 B CN 114183264B CN 202111544582 A CN202111544582 A CN 202111544582A CN 114183264 B CN114183264 B CN 114183264B
- Authority
- CN
- China
- Prior art keywords
- threshold
- temperature
- vehicle
- engine
- vehicle speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The application discloses a control method of an engine running mode, which can acquire a first average weight of a vehicle in a first time period, a first average vehicle speed of the vehicle in the first time period, a time duty ratio of the engine of the vehicle running in a heating mode in the first time period and a first highest instantaneous temperature of a Selective Catalytic Reduction (SCR) device of the vehicle in the first time period; if the first average weight is smaller than a first weight threshold, the first average vehicle speed is smaller than a first vehicle speed threshold, the time duty ratio is larger than a preset threshold, and the first maximum instantaneous temperature is lower than a first temperature threshold, the temperature requirement of the SCR device cannot be met even if the engine works in the heating mode for a long time, and at the moment, the engine can be controlled to exit the heating mode in order to reduce fuel consumption and improve drivability.
Description
Technical Field
The application relates to the field of vehicles, in particular to a control method and a device for an engine running mode.
Background
The engine operation mode refers to that the engine operates according to a preset program control in certain scenes. The heating mode is an engine operating mode. The heating mode is intended to meet the exhaust temperature requirements of the engine after-treatment, mainly selective catalytic reduction (Selective Catalytic Reduction, SCR). When the engine is operated in a high-exhaust-temperature state, the temperature of the SCR device is increased after the temperature is rapidly increased, so that the conversion efficiency of the SCR is improved, NOx exhausted by the engine is reduced, and the limit value requirement of regulations is met. Common technical means for the heating mode include opening the post injection to retard the combustion phase, activating the intake throttle to reduce the intake air amount, and the like. Therefore, the increase in the engine exhaust temperature is accompanied by deterioration of the fuel economy of the engine, a decrease in the power performance, an increase in smoke level, and the like.
The exiting condition of the heating mode is generally that the temperature of the SCR device is used as a main judging condition, and if the temperature of the SCR device is lower than a certain set temperature (for example, 200 ℃), the engine is operated in the heating mode. However, as is evident from the above description, if the engine is operated in the heating mode for a long time but the temperature of the SCR device is still insufficient, an increase in fuel consumption and a decrease in drivability may result.
Therefore, a solution is urgently needed to solve the above-mentioned problems.
Disclosure of Invention
The technical problems to be solved by the application are as follows: if the engine is operated in the heating mode for a long time but the temperature of the SCR device still cannot meet the requirement, the fuel consumption is increased and the drivability is reduced, and the control method and the device for the engine operation mode are provided.
In a first aspect, an embodiment of the present application provides a method for controlling an engine operation mode, the method including:
obtaining a first average weight of a vehicle over a first period of time, a first average vehicle speed of the vehicle over the first period of time, a time duty cycle of an engine of the vehicle operating in a heating mode over the first period of time, and a first maximum instantaneous temperature of a selective catalytic reduction SCR device of the vehicle over the first period of time;
and if the first average weight is smaller than a first weight threshold, the first average vehicle speed is smaller than a first vehicle speed threshold, the time duty ratio is larger than a preset threshold and the first highest instantaneous temperature is lower than a first temperature threshold, controlling the engine to exit from a heating mode.
Optionally, the controlling the engine to exit the heating mode includes:
the engine is controlled to switch from a heating mode to a normal mode.
Optionally, the method further comprises:
if the first preset condition is met, determining an operation mode of the engine according to the temperature of the SCR device of the vehicle; wherein the first preset condition includes any one or more of the following:
the first average weight is greater than or equal to the first weight threshold, the first average vehicle speed is greater than or equal to the first vehicle speed threshold, the time duty cycle is less than or equal to the preset threshold, and the first maximum instantaneous temperature is not less than the first temperature threshold.
Optionally, the method further comprises:
acquiring a second average weight of the vehicle in a second time period, a second average vehicle speed of the vehicle in the second time period and a second highest instantaneous temperature of a Selective Catalytic Reduction (SCR) device of the vehicle in the second time period;
and if the second average weight is smaller than the first weight threshold, the second average vehicle speed is smaller than the first vehicle speed threshold and the second highest instantaneous temperature is lower than a second temperature threshold, controlling the engine to operate in a normal mode, wherein the second temperature threshold is smaller than the first temperature threshold.
Optionally, the method further comprises:
if the second preset condition is met, determining an operation mode of the engine according to the temperature of the SCR device of the vehicle; wherein the second preset condition includes any one or more of the following:
the second average weight is greater than or equal to the first weight threshold, the second average vehicle speed is greater than or equal to the first vehicle speed threshold, and the second highest instantaneous temperature is not less than the second temperature threshold.
In a second aspect, an embodiment of the present application provides a control apparatus for an engine operation mode, the apparatus including:
a first acquisition unit configured to acquire a first average weight of a vehicle over a first period of time, a first average vehicle speed of the vehicle over the first period of time, a time duty cycle of an engine of the vehicle operating in a heating mode over the first period of time, and a first maximum instantaneous temperature of a selective catalytic reduction SCR device of the vehicle over the first period of time;
and the first control unit is used for controlling the engine to exit the heating mode if the first average weight is smaller than a first weight threshold, the first average vehicle speed is smaller than a first vehicle speed threshold, the time duty ratio is larger than a preset threshold and the first highest instantaneous temperature is lower than a first temperature threshold.
Optionally, the first control unit is configured to:
the engine is controlled to switch from a heating mode to a normal mode.
Optionally, the apparatus further includes:
the first determining unit is used for determining the running mode of the engine according to the temperature of the SCR device of the vehicle if the first preset condition is met; wherein the first preset condition includes any one or more of the following:
the first average weight is greater than or equal to the first weight threshold, the first average vehicle speed is greater than or equal to the first vehicle speed threshold, the time duty cycle is less than or equal to the preset threshold, and the first maximum instantaneous temperature is not less than the first temperature threshold.
Optionally, the apparatus further includes:
a second obtaining unit configured to obtain a second average weight of the vehicle in a second period of time, a second average vehicle speed of the vehicle in the second period of time, and a second highest instantaneous temperature of a selective catalytic reduction SCR device of the vehicle in the second period of time;
and a second control unit configured to control the engine to operate in a normal mode if the second average weight is less than the first weight threshold, the second average vehicle speed is less than the first vehicle speed threshold, and the second maximum instantaneous temperature is less than a second temperature threshold, wherein the second temperature threshold is less than the first temperature threshold.
Optionally, the apparatus further includes:
the second determining unit is used for determining the running mode of the engine according to the temperature of the SCR device of the vehicle if a second preset condition is met; wherein the second preset condition includes any one or more of the following:
the second average weight is greater than or equal to the first weight threshold, the second average vehicle speed is greater than or equal to the first vehicle speed threshold, and the second highest instantaneous temperature is not less than the second temperature threshold.
In a third aspect, an embodiment of the present application provides an apparatus, including: a processor, memory, system bus; the processor and the memory are connected through the system bus; the memory is for storing one or more programs, the one or more programs comprising instructions, which when executed by the processor, cause the processor to perform the method of any of the first aspects above.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having instructions stored therein, which when run on a terminal device, cause the terminal device to perform the method of any one of the first aspects above.
Compared with the prior art, the embodiment of the application has the following advantages:
the embodiment of the application provides a control method of an engine running mode, in one example, a first average weight of a vehicle in a first time period, a first average vehicle speed of the vehicle in the first time period, a time duty ratio of the engine of the vehicle in a heating mode in the first time period and a first highest instantaneous temperature of a Selective Catalytic Reduction (SCR) device of the vehicle in the first time period can be obtained; if the first average weight is smaller than a first weight threshold, the first average vehicle speed is smaller than a first vehicle speed threshold, the time duty ratio is larger than a preset threshold, and the first maximum instantaneous temperature is lower than a first temperature threshold, the temperature requirement of the SCR device cannot be met even if the engine works in the heating mode for a long time, and at the moment, the engine can be controlled to exit the heating mode in order to reduce fuel consumption and improve drivability. Therefore, the scheme can avoid the increase of fuel consumption and the reduction of drivability caused by long-time operation of the engine in the heating mode but the temperature of the SCR device still cannot meet the requirement.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a flow chart of a method for controlling an engine operating mode according to an embodiment of the present application;
FIG. 2 is a flow chart of a method for controlling an engine operating mode according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a control device for an engine operation mode according to an embodiment of the present application.
Detailed Description
In order to make the present application better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Various non-limiting embodiments of the present application are described in detail below with reference to the attached drawing figures.
Exemplary method
Referring to fig. 1, the flow chart of a control method for an engine operation mode according to an embodiment of the present application is shown. The method shown in fig. 1 may be performed, for example, by a controller on the vehicle. In this embodiment, the method may include, for example, the steps of: S101-S102.
S101: a first average weight of a vehicle over a first period of time, a first average vehicle speed of the vehicle over the first period of time, a time duty cycle of an engine of the vehicle operating in a heating mode over the first period of time, and a first maximum instantaneous temperature of a selective catalytic reduction, SCR, device of the vehicle over the first period of time is obtained.
The first period of time is not particularly limited, and may be, for example, a period of time from when the vehicle starts to run to when the vehicle runs for a first period of time, which may be, for example, 30 minutes.
In the SCR and the SCR device, it should be noted that:
SCR: a process for treating NOx includes such steps as spraying urea under the action of catalyst to reduce NOx in tail gas to N 2 And H 2 O. Urea may be injected according to the amount of NOx emitted from the engine, and urea injected below the conversion temperature (e.g., 180 ℃) may not hydrolyze or may not react with NOx further.
An SCR device is a device that performs an SCR operation, which may be mounted on a tailpipe.
S102: and if the first average weight is smaller than a first weight threshold, the first average vehicle speed is smaller than a first vehicle speed threshold, the time duty ratio is larger than a preset threshold and the first highest instantaneous temperature is lower than a first temperature threshold, controlling the engine to exit from a heating mode.
At lighter vehicle weights and lower vehicle speeds, the temperature of the SCR device generally has difficulty reaching the urea start-up temperature. The first average weight referred to herein being less than a first weight threshold means that the vehicle is lighter in weight; the first average vehicle speed being less than the first vehicle speed threshold value means that the vehicle speed is low.
The first weight threshold is not particularly limited in the embodiment of the present application, and may be 300 kg, for example. The first average vehicle speed is also not particularly limited, and may be, for example, 35 km/h.
The time duty cycle being greater than a preset threshold value indicates that the engine is operating in a heating mode for a majority of the time during a first period of time. The embodiment of the application is not particularly limited to the preset threshold, and the preset threshold may be 95%, for example.
In one example, the first temperature threshold may be a urea start-up temperature, and the first maximum instantaneous temperature is below the first temperature threshold, indicating that none of the SCR devices reach the urea start-up temperature during the first period of time.
From the above description, it is clear that in the case where the engine is operated in the heating mode for a large part of the time during the first period, the maximum instantaneous temperature of the SCR device during the first period does not reach the temperature at which urea starts to spray. And under the conditions of lighter weight and lower vehicle speed, the temperature of the SCR device is generally difficult to reach the temperature of urea start-up. Thus, for this situation, if the engine continues to operate in the heating mode, the temperature of the SCR device may still not be able to meet the demand (e.g., the urea start-up temperature may not be reached). Therefore, in the embodiment of the application, the engine can be controlled to exit the heating mode, so that the fuel consumption is reduced and the drivability is improved.
In one example, S102, when embodied, may control the engine to switch from the heating mode to the other mode. As one example, the engine may be controlled to switch from the heating mode to the normal mode. When the engine is controlled to be switched from the heating mode to the normal mode, the throttle valve can be controlled to be fully opened, and the combustion parameters are controlled to be in a normal range. Wherein the combustion parameters include, but are not limited to, rail pressure, combustion phasing, and the like.
In one example, if one or more of the conditions of "the first average weight is less than the first weight threshold, the first average vehicle speed is less than the first vehicle speed threshold, the time duty cycle is greater than the preset threshold, and the first maximum instantaneous temperature is less than the first temperature threshold" in S102 are not met, this indicates that the vehicle has the potential for thermal management, for which case the operating mode of the engine may be determined based on the temperature of the SCR device of the vehicle. For example, the engine is controlled to operate in a heating mode when the temperature of the SCR device of the vehicle is below a certain set temperature, and the engine is controlled to exit the heating mode (e.g., operate in a normal mode) when the temperature of the SCR device of the vehicle is not below the set temperature. In other words: in one example:
if the first preset condition is met, determining an operation mode of the engine according to the temperature of the SCR device of the vehicle; wherein the first preset condition includes any one or more of the following:
the first average weight is greater than or equal to the first weight threshold, the first average vehicle speed is greater than or equal to the first vehicle speed threshold, the time duty cycle is less than or equal to the preset threshold, and the first maximum instantaneous temperature is not less than the first temperature threshold.
After performing S101-S102, embodiments of the present application may further include steps S201-S202 shown in fig. 2. Fig. 2 is a flowchart of a control method for an engine operation mode according to another embodiment of the present application.
S201: a second average weight of the vehicle over a second time period, a second average vehicle speed of the vehicle over the second time period, and a second highest instantaneous temperature of a selective catalytic reduction, SCR, device of the vehicle over the second time period are obtained.
S202: and if the second average weight is smaller than the first weight threshold, the second average vehicle speed is smaller than the first vehicle speed threshold and the second highest instantaneous temperature is lower than a second temperature threshold, controlling the engine to operate in a normal mode, wherein the second temperature threshold is smaller than the first temperature threshold.
In the embodiment of the application, the second average weight is smaller than the first weight threshold, the second average vehicle speed is smaller than the first vehicle speed threshold and the second highest instantaneous temperature is lower than the second temperature threshold, which indicates that the running condition of the vehicle is not changed in the first time period and the second time period, and at the moment, the engine can be controlled to continuously work in a normal mode, so that the fuel consumption is reduced and the drivability is improved.
With respect to the second period of time, it is noted that the second period of time may be, for example, a period of time from the start of execution of S102 to a second period of time after execution of S102, and the second period of time may be, for example, 20 minutes.
The embodiment of the present application is not specifically limited with respect to the second temperature threshold, and the second temperature threshold may be lower than the first temperature threshold. For example, when the first temperature threshold is 200 ℃, the second temperature threshold may be 170 ℃.
In one example, if one or more of the conditions of "the second average weight is less than the first weight threshold, the second average vehicle speed is less than the first vehicle speed threshold, and the second maximum instantaneous temperature is less than a second temperature threshold" in S202 are not met, which indicates that the vehicle has the potential for thermal management, for which case the operating mode of the engine may be determined based on the temperature of the SCR device of the vehicle. For example, the engine is controlled to operate in a heating mode when the temperature of the SCR device of the vehicle is below a certain set temperature, and the engine is controlled to exit the heating mode (e.g., operate in a normal mode) when the temperature of the SCR device of the vehicle is not below the set temperature. In other words: in one example:
if the second preset condition is met, determining an operation mode of the engine according to the temperature of the SCR device of the vehicle; wherein the second preset condition includes any one or more of the following:
the second average weight is greater than or equal to the first weight threshold, the second average vehicle speed is greater than or equal to the first vehicle speed threshold, and the second highest instantaneous temperature is not less than the second temperature threshold.
In the embodiment of the present application, the step S201 and the subsequent steps may be performed periodically, for example, the step S201 and the subsequent steps are performed with 20 minutes as one period, so that the running state of the engine and the real-time state of the vehicle are in line, which not only reduces fuel consumption, improves drivability, but also meets the exhaust emission requirement.
Exemplary apparatus
Based on the method provided by the embodiment, the embodiment of the application also provides a device, and the device is described below with reference to the accompanying drawings.
Referring to fig. 3, which is a schematic structural diagram of an engine operation mode control device according to an embodiment of the present application, the device 300 may include, for example, a first acquisition unit 301 and a first control unit 302.:
a first obtaining unit 301 configured to obtain a first average weight of a vehicle during a first period of time, a first average vehicle speed of the vehicle during the first period of time, a time duty cycle of an engine of the vehicle during the first period of time when the engine of the vehicle is operating in a heating mode, and a first highest instantaneous temperature of a selective catalytic reduction SCR device of the vehicle during the first period of time;
the first control unit 302 is configured to control the engine to exit the heating mode if the first average weight is less than a first weight threshold, the first average vehicle speed is less than a first vehicle speed threshold, the time duty cycle is greater than a preset threshold, and the first maximum instantaneous temperature is less than a first temperature threshold.
Optionally, the first control unit 302 is configured to:
the engine is controlled to switch from a heating mode to a normal mode.
Optionally, the apparatus further includes:
the first determining unit is used for determining the running mode of the engine according to the temperature of the SCR device of the vehicle if the first preset condition is met; wherein the first preset condition includes any one or more of the following:
the first average weight is greater than or equal to the first weight threshold, the first average vehicle speed is greater than or equal to the first vehicle speed threshold, the time duty cycle is less than or equal to the preset threshold, and the first maximum instantaneous temperature is not less than the first temperature threshold.
Optionally, the apparatus further includes:
a second obtaining unit configured to obtain a second average weight of the vehicle in a second period of time, a second average vehicle speed of the vehicle in the second period of time, and a second highest instantaneous temperature of a selective catalytic reduction SCR device of the vehicle in the second period of time;
and a second control unit configured to control the engine to operate in a normal mode if the second average weight is less than the first weight threshold, the second average vehicle speed is less than the first vehicle speed threshold, and the second maximum instantaneous temperature is less than a second temperature threshold, wherein the second temperature threshold is less than the first temperature threshold.
Optionally, the apparatus further includes:
the second determining unit is used for determining the running mode of the engine according to the temperature of the SCR device of the vehicle if a second preset condition is met; wherein the second preset condition includes any one or more of the following:
the second average weight is greater than or equal to the first weight threshold, the second average vehicle speed is greater than or equal to the first vehicle speed threshold, and the second highest instantaneous temperature is not less than the second temperature threshold.
Since the apparatus 300 is an apparatus corresponding to the method provided in the above method embodiment, the specific implementation of each unit of the apparatus 300 is the same as the above method embodiment, and therefore, with respect to the specific implementation of each unit of the apparatus 300, reference may be made to the description part of the above method embodiment, and details are not repeated herein.
The embodiment of the application also provides equipment, which comprises: a processor, memory, system bus; the processor and the memory are connected through the system bus; the memory is for storing one or more programs, the one or more programs comprising instructions, which when executed by the processor, cause the processor to perform the method of any of the above method embodiments.
Embodiments of the present application provide a computer readable storage medium having instructions stored therein, which when run on a terminal device, cause the terminal device to perform the method according to any of the above method embodiments.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application 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 is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the application are intended to be included within the scope of the application.
Claims (10)
1. A method of controlling an engine operating mode, the method comprising:
obtaining a first average weight of a vehicle over a first period of time, a first average vehicle speed of the vehicle over the first period of time, a time duty cycle of an engine of the vehicle operating in a heating mode over the first period of time, and a first maximum instantaneous temperature of a selective catalytic reduction SCR device of the vehicle over the first period of time;
and if the first average weight is smaller than a first weight threshold, the first average vehicle speed is smaller than a first vehicle speed threshold, the time duty ratio is larger than a preset threshold and the first highest instantaneous temperature is lower than a first temperature threshold, controlling the engine to exit from a heating mode.
2. The method of claim 1, wherein the controlling the engine to exit a heating mode comprises:
the engine is controlled to switch from a heating mode to a normal mode.
3. The method according to claim 1, wherein the method further comprises:
if the first preset condition is met, determining an operation mode of the engine according to the temperature of the SCR device of the vehicle; wherein the first preset condition includes any one or more of the following:
the first average weight is greater than or equal to the first weight threshold, the first average vehicle speed is greater than or equal to the first vehicle speed threshold, the time duty cycle is less than or equal to the preset threshold, and the first maximum instantaneous temperature is not less than the first temperature threshold.
4. The method according to claim 1, wherein the method further comprises:
acquiring a second average weight of the vehicle in a second time period, a second average vehicle speed of the vehicle in the second time period and a second highest instantaneous temperature of a Selective Catalytic Reduction (SCR) device of the vehicle in the second time period;
and if the second average weight is smaller than the first weight threshold, the second average vehicle speed is smaller than the first vehicle speed threshold and the second highest instantaneous temperature is lower than a second temperature threshold, controlling the engine to operate in a normal mode, wherein the second temperature threshold is smaller than the first temperature threshold.
5. The method according to claim 4, wherein the method further comprises:
if the second preset condition is met, determining an operation mode of the engine according to the temperature of the SCR device of the vehicle; wherein the second preset condition includes any one or more of the following:
the second average weight is greater than or equal to the first weight threshold, the second average vehicle speed is greater than or equal to the first vehicle speed threshold, and the second highest instantaneous temperature is not less than the second temperature threshold.
6. A control apparatus for an engine operating mode, the apparatus comprising:
a first acquisition unit configured to acquire a first average weight of a vehicle over a first period of time, a first average vehicle speed of the vehicle over the first period of time, a time duty cycle of an engine of the vehicle operating in a heating mode over the first period of time, and a first maximum instantaneous temperature of a selective catalytic reduction SCR device of the vehicle over the first period of time;
and the first control unit is used for controlling the engine to exit the heating mode if the first average weight is smaller than a first weight threshold, the first average vehicle speed is smaller than a first vehicle speed threshold, the time duty ratio is larger than a preset threshold and the first highest instantaneous temperature is lower than a first temperature threshold.
7. The apparatus of claim 6, wherein the first control unit is configured to:
the engine is controlled to switch from a heating mode to a normal mode.
8. The apparatus of claim 6, wherein the apparatus further comprises:
the first determining unit is used for determining the running mode of the engine according to the temperature of the SCR device of the vehicle if the first preset condition is met; wherein the first preset condition includes any one or more of the following:
the first average weight is greater than or equal to the first weight threshold, the first average vehicle speed is greater than or equal to the first vehicle speed threshold, the time duty cycle is less than or equal to the preset threshold, and the first maximum instantaneous temperature is not less than the first temperature threshold.
9. An apparatus, the apparatus comprising: a processor, memory, system bus; the processor and the memory are connected through the system bus; the memory is for storing one or more programs, the one or more programs comprising instructions, which when executed by the processor, cause the processor to perform the method of any of claims 1-5.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein instructions, which when run on a terminal device, cause the terminal device to perform the method of any of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111544582.6A CN114183264B (en) | 2021-12-16 | 2021-12-16 | Control method and device for engine operation mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111544582.6A CN114183264B (en) | 2021-12-16 | 2021-12-16 | Control method and device for engine operation mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183264A CN114183264A (en) | 2022-03-15 |
| CN114183264B true CN114183264B (en) | 2023-09-15 |
Family
ID=80605365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111544582.6A Active CN114183264B (en) | 2021-12-16 | 2021-12-16 | Control method and device for engine operation mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114183264B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4029672A1 (en) * | 1990-09-19 | 1992-04-02 | Daimler Benz Ag | Multicylinder IC engine with exhaust catalytic converter - uses cylinders periodically to ventilate exhaust until warm=up is complete |
| WO2001073288A2 (en) * | 2000-03-28 | 2001-10-04 | Robert Bosch Gmbh | Method and device for controlling the idle operation of a drive unit |
| JP2003166415A (en) * | 2001-11-30 | 2003-06-13 | Toyota Motor Corp | Exhaust emission control device of internal combustion engine |
| DE10323979A1 (en) * | 2003-05-27 | 2004-12-16 | Adam Opel Ag | Exhaust treatment device for internal combustion engine of motor vehicle |
| EP2412946A1 (en) * | 2010-07-28 | 2012-02-01 | Aaqius & Aaqius S.A. | Method intended for reducing the amount of NOx in the exhaust fumes of a motor vehicle |
| DE102015000955A1 (en) * | 2014-01-20 | 2015-07-23 | Cummins Inc. | Systems and methods for reducing NOx and HC emissions |
| DE102018106752A1 (en) * | 2018-03-22 | 2019-09-26 | Liebherr-Werk Nenzing Gmbh | Method for controlling the diesel engine of a construction machine for the regeneration of a diesel particulate filter |
| CN110985222A (en) * | 2019-12-11 | 2020-04-10 | 潍柴动力股份有限公司 | Method and system for triggering DPF passive regeneration |
| WO2020159991A1 (en) * | 2019-01-29 | 2020-08-06 | Watlow Electric Manufacturing Company | Virtual sensing system |
| WO2020192973A1 (en) * | 2019-03-25 | 2020-10-01 | Eaton Intelligent Power Limited | System and method to maintain hot aftertreatment at engine idle |
| CN112814768A (en) * | 2020-12-31 | 2021-05-18 | 潍柴动力股份有限公司 | SCR (selective catalytic reduction) thermal management method and system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8989935B2 (en) * | 2013-03-22 | 2015-03-24 | Ford Global Technologies, Llc | Method and system for engine control |
| EP3732358A1 (en) * | 2017-12-29 | 2020-11-04 | Volvo Truck Corporation | A start-up method for a vehicle with a hybrid propulsion system |
| US11440528B2 (en) * | 2018-07-27 | 2022-09-13 | Cummins Inc. | Systems and methods for managing aftertreatment systems |
-
2021
- 2021-12-16 CN CN202111544582.6A patent/CN114183264B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4029672A1 (en) * | 1990-09-19 | 1992-04-02 | Daimler Benz Ag | Multicylinder IC engine with exhaust catalytic converter - uses cylinders periodically to ventilate exhaust until warm=up is complete |
| WO2001073288A2 (en) * | 2000-03-28 | 2001-10-04 | Robert Bosch Gmbh | Method and device for controlling the idle operation of a drive unit |
| JP2003166415A (en) * | 2001-11-30 | 2003-06-13 | Toyota Motor Corp | Exhaust emission control device of internal combustion engine |
| DE10323979A1 (en) * | 2003-05-27 | 2004-12-16 | Adam Opel Ag | Exhaust treatment device for internal combustion engine of motor vehicle |
| EP2412946A1 (en) * | 2010-07-28 | 2012-02-01 | Aaqius & Aaqius S.A. | Method intended for reducing the amount of NOx in the exhaust fumes of a motor vehicle |
| DE102015000955A1 (en) * | 2014-01-20 | 2015-07-23 | Cummins Inc. | Systems and methods for reducing NOx and HC emissions |
| DE102018106752A1 (en) * | 2018-03-22 | 2019-09-26 | Liebherr-Werk Nenzing Gmbh | Method for controlling the diesel engine of a construction machine for the regeneration of a diesel particulate filter |
| WO2020159991A1 (en) * | 2019-01-29 | 2020-08-06 | Watlow Electric Manufacturing Company | Virtual sensing system |
| WO2020192973A1 (en) * | 2019-03-25 | 2020-10-01 | Eaton Intelligent Power Limited | System and method to maintain hot aftertreatment at engine idle |
| CN110985222A (en) * | 2019-12-11 | 2020-04-10 | 潍柴动力股份有限公司 | Method and system for triggering DPF passive regeneration |
| CN112814768A (en) * | 2020-12-31 | 2021-05-18 | 潍柴动力股份有限公司 | SCR (selective catalytic reduction) thermal management method and system |
Non-Patent Citations (2)
| Title |
|---|
| 重型柴油车实际道路行驶工况试验研究;赵彦春;于英杰;林锦州;;汽车工业研究(第05期);第35-41页 * |
| 非道路机械柴油机尾气后处理技术综述;苏兆杰;王军;张朝刚;;工程机械与维修(第01期);第42-45页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114183264A (en) | 2022-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5351186B2 (en) | Exhaust gas purification system for internal combustion engine | |
| JP4961336B2 (en) | Engine exhaust purification system | |
| KR101967559B1 (en) | Exhaust gas control apparatus for internal combustion engine | |
| US8459011B2 (en) | Exhaust gas purifying apparatus for internal combustion engine | |
| US9435276B2 (en) | Exhaust gas purification system for an internal combustion engine | |
| CN112555037A (en) | Control method and control system of range extender and vehicle | |
| JP2005248781A (en) | Fuel cut control device of internal combustion engine | |
| CN112963228B (en) | Ammonia leakage control method, device and equipment | |
| CN114876657A (en) | Method and device for controlling nitrogen oxide emission of engine | |
| CN114183264B (en) | Control method and device for engine operation mode | |
| CN111677579B (en) | Urea injection control method and device and electronic equipment | |
| US6418713B1 (en) | Method for generating additional engine loads during start-up | |
| CN114738083B (en) | Control method, control device and control system for carbon loading of particulate matter catcher | |
| CN112590756A (en) | Hybrid power system operation state control method and device | |
| GB2538961A (en) | A method of adaptively controlling purging of a lean NOx trap | |
| JP2018178934A (en) | Control device and control method for vehicle | |
| CN114439637B (en) | Method and device for optimizing inlet temperature and reducing oil consumption of engine post-processor | |
| WO2023000166A1 (en) | Exhaust after-treatment system, operating method thereof and computer program product | |
| CN115898600A (en) | Controller and corresponding computer program product | |
| CN114370317B (en) | Control method of urea pump, urea pump and engine | |
| US11300064B2 (en) | Methods and systems for an aftertreatment system | |
| CN115013125A (en) | Reducing agent pre-injection control strategy under emergency acceleration working condition | |
| JP6179561B2 (en) | Exhaust purification device | |
| CN117514422A (en) | Tail gas treatment device and tail gas treatment control method | |
| CN116988863A (en) | Temperature discharge management control method and device for diesel vehicle aftertreatment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |