CN113586268B - Thermal management control method and device, vehicle and storage medium - Google Patents

Thermal management control method and device, vehicle and storage medium Download PDF

Info

Publication number
CN113586268B
CN113586268B CN202111067539.5A CN202111067539A CN113586268B CN 113586268 B CN113586268 B CN 113586268B CN 202111067539 A CN202111067539 A CN 202111067539A CN 113586268 B CN113586268 B CN 113586268B
Authority
CN
China
Prior art keywords
vehicle
thermal management
engine
gradient
condition information
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
Application number
CN202111067539.5A
Other languages
Chinese (zh)
Other versions
CN113586268A (en
Inventor
王永来
朱健
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weichai Power Co Ltd
Original Assignee
Weichai Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Weichai Power Co Ltd filed Critical Weichai Power Co Ltd
Priority to CN202111067539.5A priority Critical patent/CN113586268B/en
Publication of CN113586268A publication Critical patent/CN113586268A/en
Application granted granted Critical
Publication of CN113586268B publication Critical patent/CN113586268B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F02D41/0002—Controlling intake air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of 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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
    • F02D41/0052—Feedback control of engine parameters, e.g. for control of air/fuel ratio or intake air amount
    • 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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
    • F02D41/0055—Special engine operating conditions, e.g. for regeneration of exhaust gas treatment apparatus
    • 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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
    • 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
    • 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
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0205—Arrangements; Control features; Details thereof working on the throttle valve and another valve, e.g. choke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/023—Engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0276—Throttle and EGR-valve operated together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • F02D2021/083—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine controlling exhaust gas recirculation electronically
    • 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
    • F02D41/0002—Controlling intake air
    • F02D2041/0017—Controlling intake air by simultaneous control of throttle and exhaust gas recirculation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0614—Actual fuel mass or fuel injection amount
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
    • F02D2200/101—Engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
    • F02D2200/501—Vehicle speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
    • F02D2200/702—Road conditions
    • 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
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

The invention relates to the technical field of vehicles, and particularly discloses a thermal management control method, a thermal management control device, a vehicle and a storage medium. Compared with the prior art that the thermal management is started after the aftertreatment temperature is reduced to the threshold temperature, the thermal management control method evaluates whether the thermal management is started or not based on the first road condition information, so that the thermal management is started at the position where the aftertreatment temperature is reduced, the aftertreatment temperature can be prevented from being reduced, the aftertreatment temperature is kept in an efficient range, and the risk that the exhaust emission exceeds the standard is reduced.

Description

Thermal management control method and device, vehicle and storage medium
Technical Field
The invention relates to the technical field of vehicles, in particular to a thermal management control method and device, a vehicle and a storage medium.
Background
When the vehicle goes down a slope and is braked, the engine is dragged backwards, the engine does not spray oil and burn, and the aftertreatment temperature can be rapidly reduced. Particularly, when the vehicle descends, if the thermal management operation cannot be carried out in time, the exhaust emission exceeds the standard. Thermal management refers to increasing the temperature of the aftertreatment and extending the aftertreatment regeneration cycle by reducing the air intake of the engine during vehicle operation.
In order to solve the above problems, in the prior art, the actual temperature of the exhaust gas aftertreatment device is usually detected and compared with a threshold temperature, and when the actual temperature is lower than the threshold temperature, thermal management is performed, and the threshold temperature is generally a lower limit temperature meeting the requirement of the exhaust gas aftertreatment device in normal operation.
Disclosure of Invention
The invention aims to: a thermal management control method, apparatus, vehicle, and storage medium are provided to perform thermal management where aftertreatment temperature drops.
In one aspect, the present invention provides a thermal management control method, including:
obtaining operation parameters of a vehicle, wherein the operation parameters comprise the rotating speed of an engine, the speed of the vehicle and the fuel injection quantity of the engine;
determining that the vehicle is in a set working condition based on the operating parameters, and when the vehicle is in the set working condition, not spraying fuel to an engine of the vehicle;
acquiring first road condition information in the driving direction of a vehicle, wherein the first road condition information comprises a first distance and a first gradient;
and evaluating whether the starting condition of the thermal management is met or not based on the first road condition information, and outputting an evaluation result.
As a preferred technical solution of the thermal management control method, determining that the vehicle is in the set working condition based on the operating parameters includes:
judging whether the rotating speed of the engine is greater than a set rotating speed or not and whether the vehicle speed is greater than a set vehicle speed or not;
and when the rotating speed of the engine is greater than the set rotating speed and the vehicle speed is greater than the set vehicle speed, the vehicle is in the set working condition.
As a preferred technical solution of the thermal management control method, evaluating whether a startup condition of thermal management is satisfied based on the first condition information, and outputting an evaluation result includes:
judging whether the first gradient in the first distance range is not less than a first set gradient or not;
and when the first gradient in the first distance range is not less than a first set gradient, confirming that the starting condition of thermal management is met, and starting the thermal management.
As a preferred technical solution of the thermal management control method, when the starting condition of thermal management is satisfied based on the first road condition information evaluation, starting thermal management; the thermal management control method further comprises, after initiating thermal management:
acquiring second road condition information in the driving direction of the vehicle, wherein the second road condition information comprises a second distance and a second gradient;
and evaluating whether the exit condition of the thermal management is met or not based on the second road condition information, and outputting an evaluation result.
As a preferred technical solution of the thermal management control method, evaluating whether an exit condition of thermal management is satisfied based on the second road condition information, and outputting an evaluation result includes:
judging whether the second gradient in the second distance range is not greater than a second set gradient or not;
and when the second gradient in the second distance range is not greater than a second set gradient, confirming that an exit condition of thermal management is met, and exiting the thermal management, wherein the first distance is greater than the second distance, and the first set gradient is not less than the second set gradient.
As a preferable technical solution of the thermal management control method, when the second gradient in the second distance range is greater than a second set gradient, second road condition information in the vehicle traveling direction is acquired again, whether a quit condition for thermal management is satisfied is evaluated based on the second road condition information, and an evaluation result is output.
As a preferred technical solution of the thermal management control method, starting thermal management includes:
any one or more of closing an intake throttle valve of the engine, closing an exhaust throttle valve of the engine, and opening an EGR valve.
In another aspect, the present invention provides a thermal management control device, comprising:
the parameter acquisition module is used for acquiring the running parameters of the vehicle;
the working condition determining module is used for determining that the vehicle is in a set working condition based on the operation parameters;
the first information acquisition module is used for acquiring first road condition information in the driving direction of the vehicle;
and the first evaluation module is used for evaluating whether the starting condition of the thermal management is met or not based on the first road condition information and outputting an evaluation result.
In another aspect, the present invention provides a vehicle comprising:
a controller;
an engine;
the rotating speed sensor is used for collecting the rotating speed of the engine and sending the rotating speed of the engine to the controller;
the vehicle speed sensor is used for collecting the vehicle speed of a vehicle and sending the vehicle speed to the controller;
the oil mass sensor is used for acquiring the engine oil injection quantity of the engine and sending the engine oil injection quantity to the controller;
the electronic horizon is used for acquiring a first gradient within a first distance in the driving direction of the vehicle and sending the first gradient within the first distance to the controller;
a control valve for performing thermal management by controlling an intake air amount of the engine, an exhaust gas amount of the engine, or an EGR rate of the engine;
a memory for storing one or more programs;
the one or more programs, when executed by the controller, cause the controller to control the vehicle to implement the thermal management control method of any of the above aspects.
In another aspect, the present invention provides a storage medium having a computer program stored thereon, where when the program is executed by a controller, the controller controls a vehicle to implement the thermal management control method described in any of the above aspects.
The invention has the beneficial effects that:
the invention provides a thermal management control method, a device, a vehicle and a storage medium. Compared with the prior art that the thermal management is started after the aftertreatment temperature is reduced to the threshold temperature, the thermal management control method evaluates whether the thermal management is started or not based on the first road condition information, so that the thermal management is started at the position where the aftertreatment temperature is reduced, the aftertreatment temperature can be prevented from being reduced, the aftertreatment temperature is kept in an efficient range, and the risk that the exhaust emission exceeds the standard is reduced.
Drawings
FIG. 1 is a flowchart illustrating a thermal management control method according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a thermal management control method according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a thermal management control device according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a vehicle according to a fourth embodiment of the present invention.
In the figure:
310. a parameter acquisition module; 320. a working condition determining module; 330. a first information acquisition module; 340. a first evaluation module;
410. a controller; 420. an engine; 430. a rotational speed sensor; 440. a vehicle speed sensor; 450. an oil quantity sensor; 460. an electronic horizon; 470. a control valve; 480. a memory.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.
Example one
As shown in fig. 1, the present embodiment provides a thermal management control method, which may be executed by a thermal management control device, which may be implemented by software and/or hardware and integrated in a vehicle, and specifically includes the following steps.
S110: the operating parameters of the vehicle are acquired.
The operation parameters comprise the engine speed, the vehicle speed and the engine fuel injection quantity. The controller can acquire the engine speed of the engine through a speed sensor; acquiring the speed of a vehicle through a vehicle speed sensor; the oil injection quantity of the engine is acquired through an oil quantity sensor. The controller can also be communicated with the ECU, and the running parameters of the vehicle are obtained through the ECU. The operating parameters of the vehicle may represent the current operating conditions of the vehicle, such as normal driving, braking, engine drag, etc. Taking the engine back-dragging as an example, when the vehicle is in a downhill process, the fuel injection quantity of the engine is zero, the engine is driven by wheels to run, the vehicle speed is greater than zero, and the engine rotating speed is also greater than zero.
S120: and determining that the vehicle is in the set working condition based on the operation parameters.
When the vehicle is in the set working condition, the engine of the vehicle does not spray fuel. Specifically, determining that the vehicle is in the set operating condition based on the operating parameters includes:
judging whether the rotating speed of the engine is greater than a set rotating speed or not and whether the vehicle speed is greater than a set vehicle speed or not; when the rotating speed of the engine is greater than the set rotating speed and the vehicle speed is greater than the set vehicle speed, the vehicle is in the set working condition. And when any one of the engine speed is greater than the set speed and the vehicle speed is greater than the set vehicle speed is not satisfied, returning to the step S110.
Specifically, the present embodiment exemplarily shows that the set rotation speed is 0, the set vehicle speed is 30km/h, and the fuel injection amount is 0. When the set rotating speed is greater than 0 and the set vehicle speed is greater than 30km/h, the vehicle is in the process of descending, the engine is not needed to provide power under the action of inertia or self gravity of the vehicle, the vehicle can continuously move forward, and the aftertreatment temperature is easily reduced because the engine does not burn fuel oil. In other embodiments, the specific values of the set rotation speed, the set vehicle speed and the set fuel injection quantity can be set according to requirements.
When judging whether the engine speed is greater than the set speed and whether the vehicle speed is greater than the set vehicle speed, the engine speed and the vehicle speed can be simultaneously compared, and can also be sequentially compared according to any sequence.
S130: first road condition information in a vehicle traveling direction is acquired.
Wherein the first road condition information includes a first distance and a first gradient. Specifically, the controller may obtain the first distance and the first slope from an electronic horizon. The electronic horizon can communicate with a controller through an ADAS (Advanced Driver Assistance Systems, active safety scene) map, realize road reconstruction, and provide input for dynamic optimization control of the engine. A controller of an electronic horizon internal map may send a first grade to the controller within a first distance of a road segment ahead of the vehicle. Such as road slope values within one kilometer of the vehicle. It should be noted that the accuracy of the ADAS map is generally about 1-5 m, which is expanded based on the ordinary electronic navigation map, such as supplementing some auxiliary information of slope, curvature and heading on the road. In addition, the information of the number and the width of the lanes is also covered, the precision and the shape information of the roads are more accurate, the map can support automatic driving for use when the perception sensor of the automatic driving vehicle is rich enough, for example, a camera, a radar, a laser and an ultrasonic sensor are arranged in a front bumper, a rear side view mirror and a driving rod of the vehicle or on a windshield, when the automobile drives, the surrounding environment is sensed at any time, data is collected, static and dynamic object identification, detection and tracking are carried out, and systematic operation and analysis are carried out by combining navigation map data, so that a driver can be aware of possible dangers in advance, and the comfort and the safety of automobile driving are effectively improved.
S140: and evaluating whether the starting condition of the thermal management is met or not based on the first road condition information, and outputting an evaluation result.
Specifically, the evaluating whether the starting condition of the thermal management is met based on the first road condition information, and outputting the evaluation result includes:
judging whether a first gradient in a first distance range is not less than a first set gradient or not; and when the first gradient in the first distance range is not less than the first set gradient, confirming that the starting condition of the thermal management is met, and starting the thermal management. When the first gradient in the first distance range is smaller than the first set gradient, the thermal management is not started, and the process returns to the step S110.
It can be understood that, in the foregoing steps, when the vehicle is in the set working condition, it is already clear that the vehicle is in the process of going downhill, and when the first gradient is not less than the first set gradient, it indicates that the vehicle can overcome the frictional resistance given to the vehicle by the ground surface when the vehicle moves forward by means of the gravity of the vehicle under the condition that the fuel supply is stopped at this time, so as to prompt the vehicle to move forward along the downhill by itself, and at this time, thermal management is required to avoid the decrease of the aftertreatment temperature. When the gradient is smaller than the first set gradient, the frictional resistance given to the vehicle by the ground when the vehicle moves forwards cannot be overcome by the gravity of the vehicle, the engine is required to burn to supply power so as to ensure that the vehicle moves forwards on a downhill, and the temperature of aftertreatment cannot be influenced because the engine burns fuel at the moment.
In the present embodiment, a scheme is exemplarily given in which the first set gradient is 5 ° and the first distance is 2 km. In other embodiments, the values of the first distance and the first set gradient may be set as required.
The opening thermal management may be implemented by any one or more of an intake throttle valve, an exhaust throttle valve, and an EGR valve, and specifically may be any one of or a combination of a closing of an intake throttle valve of an engine, a closing of an exhaust throttle valve of an engine, and an opening of an EGR valve. It can be understood that closing the air intake throttle valve of the engine, closing the exhaust throttle valve of the engine and opening the EGR valve can effectively reduce the air intake amount of the engine, further reduce the heat of the after-treatment taken away by the fresh air entering the engine, and improve the temperature of the after-treatment, thereby avoiding the exhaust emission from exceeding the standard when the vehicle goes down a slope and the engine drags backwards.
According to the thermal management control method provided by the embodiment, the running parameters of the vehicle are obtained, the vehicle is determined to be in the set working condition based on the running parameters, the first road condition information in the running direction of the vehicle is obtained, whether the starting condition of thermal management is met or not is evaluated based on the first road condition information, and the evaluation result is output. Compared with the prior art that heat management is started after the aftertreatment temperature is reduced to the threshold temperature, the heat management control method evaluates whether heat management is started or not based on the first path information, so that heat management is started at the position where the aftertreatment temperature is reduced, the aftertreatment temperature can be prevented from being reduced, the aftertreatment temperature is kept in a high-efficiency range, and the risk that the exhaust emission exceeds the standard is reduced.
Example two
The present embodiment provides a thermal management control method, which is further embodied on the basis of the first embodiment. The thermal management control method comprises the following steps.
S210: the operating parameters of the vehicle are acquired.
S220: and determining that the vehicle is in the set working condition based on the operation parameters.
S230: first road condition information in a vehicle traveling direction is acquired.
S240: and judging whether the first gradient in the first distance range is not less than a first set gradient.
When the first gradient in the first distance range is not less than the first set gradient, executing S250; when the first gradient in the first distance range is smaller than the first set gradient, return is made to S210.
S250: starting thermal management;
s260: second road condition information in the vehicle traveling direction is acquired.
Wherein the second road condition information includes a second distance and a second slope; in this embodiment, the first distance is greater than the second distance, and the first set gradient is not less than the second set gradient. In the embodiment, a scheme that the second distance is 0.5km and the second set gradient is 2 ° is exemplarily given. In other embodiments, the values of the second distance and the second set gradient may be set as required.
S270: and evaluating whether the exit condition of the thermal management is met or not based on the second road condition information, and outputting an evaluation result.
Specifically, the evaluating whether the exit condition of the thermal management is satisfied based on the second road condition information, and outputting the evaluation result includes:
s271: and judging whether the second gradient in the second distance range is not greater than a second set gradient.
When the second gradient in the second distance range is not greater than the second set gradient, confirming that the exit condition of the thermal management is satisfied, and executing S272; when the second gradient in the second distance range is larger than the second set gradient, the process returns to step S260.
S272: thermal management is exited.
It is understood that the second slope within the second distance range is equal to or less than the second set slope, which means that the slope at any position within the range of the second distance from the current position of the vehicle in front of the travel of the vehicle is equal to or less than the second set slope. In other embodiments, the second slope may be set to be less than or equal to a second set slope within a percentage of the second distance.
When the second gradient in the second distance range is smaller than or equal to the second set gradient, the frictional resistance given to the vehicle by the ground when the vehicle moves forwards cannot be overcome by the gravity of the vehicle, the engine is required to burn to supply power to ensure that the vehicle moves forwards on a downhill, and at the moment, the temperature of aftertreatment cannot be influenced due to fuel oil burning of the engine, so that the thermal management can be quit.
According to the thermal management control method provided by the embodiment, the running parameters of the vehicle are obtained, the vehicle is determined to be in the set working condition based on the running parameters, the first road condition information in the running direction of the vehicle is obtained, whether the starting condition of thermal management is met or not is evaluated based on the first road condition information, and the evaluation result is output. And after the thermal management is carried out, second road condition information in the vehicle driving direction is obtained, whether the quitting condition of the thermal management is met or not is evaluated on the basis of the second road condition information, and an evaluation result is output. Compared with the prior art that the thermal management is started after the aftertreatment temperature is reduced to the threshold temperature, the thermal management control method evaluates whether the thermal management is started or not based on the first road condition information, so that the thermal management is started at the position where the aftertreatment temperature is reduced, the aftertreatment temperature can be prevented from being reduced, the aftertreatment temperature is kept in an efficient range, and the risk that the exhaust emission exceeds the standard is reduced. And after the thermal management is started, the thermal management is actively closed at the moment when the vehicle needs to exit the engine for towing, and power is intervened in time.
EXAMPLE III
The present embodiment provides a thermal management control apparatus, which is used to implement the thermal management control methods in the first and second embodiments.
As shown in fig. 3, the thermal management control apparatus includes:
the parameter obtaining module 310, the parameter obtaining module 310 is used for obtaining the operating parameters of the vehicle.
The parameter obtaining module 310 may include a rotation speed obtaining unit for obtaining an engine rotation speed of the engine, a vehicle speed obtaining unit for obtaining a vehicle speed of the vehicle, and an oil amount obtaining unit for obtaining an engine oil injection amount of the engine.
The operating condition determination module 320, the operating condition determination module 320 is configured to determine that the vehicle is in the set operating condition based on the operating parameter.
The first information obtaining module 330, the first information obtaining module 330 is configured to obtain first road condition information in a driving direction of the vehicle.
The first information acquisition module 330 includes a first distance acquisition unit for acquiring the first distance and a first gradient acquisition unit for acquiring the first gradient.
And the first evaluation module 340, wherein the first evaluation module 340 is configured to evaluate whether the startup condition of the thermal management is met based on the first road condition information, and output an evaluation result.
Optionally, the thermal management control apparatus further comprises:
and the second information acquisition module is used for acquiring second road condition information in the driving direction of the vehicle after the thermal management is started.
The second information acquisition module includes a second distance acquisition unit for acquiring a second distance and a second gradient acquisition unit for acquiring a second gradient.
And the second evaluation module is used for evaluating whether the starting condition of the thermal management is met or not based on the second road condition information and outputting an evaluation result.
In the thermal management control device provided by this embodiment, the parameter obtaining module 310 obtains the operating parameters of the vehicle, the operating condition determining module 320 determines that the vehicle is in the set operating condition based on the operating parameters, the first information obtaining module 330 obtains first road condition information in the driving direction of the vehicle, and the first evaluating module 340 evaluates whether the start condition of thermal management is satisfied based on the first road condition information, and outputs an evaluation result. Compared with the prior art that heat management is started after the aftertreatment temperature is reduced to the threshold temperature, the heat management control method evaluates whether heat management is started or not based on the first path information, so that heat management is started at the position where the aftertreatment temperature is reduced, the aftertreatment temperature can be prevented from being reduced, the aftertreatment temperature is kept in a high-efficiency range, and the risk that the exhaust emission exceeds the standard is reduced.
Example four
The present embodiment provides a vehicle. As shown in fig. 4, the vehicle includes a controller 410, an engine 420, a speed sensor 430, a vehicle speed sensor 440, an oil amount sensor 450, an electronic horizon 460, a control valve 470, and a memory 480. The controller 410 may be coupled to the engine 420, the speed sensor 430, the vehicle speed sensor 440, the fuel level sensor 450, the electronic horizon 460, the control valve 470, and the memory 480 by a bus or other means, as illustrated by the bus connection in fig. 4. The rotation speed sensor 430 is configured to collect an engine rotation speed of the engine 420, and send the engine rotation speed to the controller 410; the vehicle speed sensor 440 is used for acquiring the vehicle speed of the vehicle and sending the vehicle speed to the controller 410; the oil quantity sensor 450 is used for collecting the engine oil injection quantity of the engine 420 and sending the engine oil injection quantity to the controller 410; the electronic horizon 460 is used for collecting a first slope within a first distance in the traveling direction of the vehicle and sending the first slope within the first distance to the controller 410; the valve 470 is controlled to perform thermal management by controlling the intake air amount of the engine 420, the exhaust gas amount of the engine 420, or the EGR rate of the engine 420.
The control valve 470 may be any one of an intake throttle valve, an exhaust throttle valve, and an EGR valve, and the vehicle may also employ a combination of any two or three of the intake throttle valve, the exhaust throttle valve, and the EGR valve. When the air inlet throttle valve of the engine is closed, the air inlet of the engine can be reduced, when the air exhaust throttle valve of the engine is closed, the air exhaust of the engine can be reduced, the air inlet of the engine is reduced, when the EGR valve is opened, part of waste gas discharged by the engine enters the engine, and the air inlet of the engine is reduced.
The memory 480, which is a computer-readable storage medium, may be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the thermal management control method in the embodiment of the present invention. The controller 410 executes various functional applications and data processing of the vehicle by executing software programs, instructions, and modules stored in the memory 480, that is, implements the thermal management control method of the above-described embodiment.
The memory 480 mainly includes a program storage area and a data storage area, wherein the program storage area can store an operating system and an application program required by at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, memory 480 may include high speed random access memory 480, and may also include non-volatile memory 480, such as at least one piece of disk memory 480, flash memory device, or other non-volatile solid state memory 480. In some examples, memory 480 may further include memory 480 located remotely from controller 410, and such remote memory 480 may be connected to the vehicle via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The vehicle provided by the fourth embodiment of the present invention and the thermal management control method provided by the foregoing embodiment belong to the same inventive concept, and the technical details that are not described in detail in the present embodiment can be referred to the foregoing embodiment, and the present embodiment has the same beneficial effects as executing the thermal management control method.
EXAMPLE five
Fifth, an embodiment of the present invention further provides a storage medium, on which a computer program is stored, where the computer program, when executed by a controller, controls a vehicle to implement the thermal management control method according to the fifth embodiment of the present invention.
Of course, the storage medium including the computer-executable instructions provided in the embodiment of the present invention is not limited to the operations in the thermal management control method described above, and may also perform related operations in the thermal management control method provided in the embodiment of the present invention, and has corresponding functions and advantages.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a robot, a personal computer, a server, or a network device, etc.) to execute the thermal management control method according to the embodiments of the present invention.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (5)

1. A method of thermal management control, characterized by:
obtaining operation parameters of a vehicle, wherein the operation parameters comprise the rotating speed of an engine, the speed of the vehicle and the fuel injection quantity of the engine;
determining that the vehicle is in a set working condition based on the operating parameters, and when the vehicle is in the set working condition, not spraying fuel to an engine of the vehicle;
acquiring first road condition information in the driving direction of a vehicle, wherein the first road condition information comprises a first distance and a first gradient;
evaluating whether the starting condition of thermal management is met or not based on the first road condition information, and outputting an evaluation result;
evaluating whether the starting condition of the thermal management is met or not based on the first road condition information, and outputting an evaluation result comprises:
judging whether the first gradient in the first distance range is not less than a first set gradient or not;
when the first gradient in the first distance range is not smaller than a first set gradient, confirming that a starting condition of thermal management is met, and starting thermal management;
the thermal management control method further comprises, after initiating thermal management:
acquiring second road condition information in the driving direction of the vehicle, wherein the second road condition information comprises a second distance and a second gradient;
evaluating whether an exit condition of thermal management is met or not based on the second road condition information, and outputting an evaluation result;
evaluating whether an exit condition of thermal management is satisfied based on the second road condition information, and outputting an evaluation result includes:
judging whether the second gradient in the second distance range is not greater than a second set gradient or not;
when the second gradient in the second distance range is not larger than a second set gradient, confirming that an exit condition of thermal management is met, and exiting the thermal management, wherein the first distance is larger than the second distance, and the first set gradient is not smaller than the second set gradient;
when the second gradient in the second distance range is larger than a second set gradient, second road condition information in the vehicle running direction is obtained again, whether exit conditions of thermal management are met or not is evaluated based on the second road condition information, and an evaluation result is output;
and after the thermal management is started, actively closing the thermal management when the vehicle needs to exit the engine for dragging.
2. The thermal management control method of claim 1, wherein determining that the vehicle is in the set operating condition based on the operating parameter comprises:
judging whether the rotating speed of the engine is greater than a set rotating speed or not and whether the vehicle speed is greater than a set vehicle speed or not;
and when the rotating speed of the engine is greater than the set rotating speed and the vehicle speed is greater than the set vehicle speed, the vehicle is in the set working condition.
3. The thermal management control method of claim 1, wherein initiating thermal management comprises:
any one or more of closing an intake throttle valve of the engine, closing an exhaust throttle valve of the engine, and opening an EGR valve.
4. A vehicle, characterized by comprising:
a controller;
an engine;
the rotating speed sensor is used for acquiring the rotating speed of the engine and sending the rotating speed of the engine to the controller;
the vehicle speed sensor is used for collecting the vehicle speed of a vehicle and sending the vehicle speed to the controller;
the oil mass sensor is used for acquiring the engine oil injection quantity of the engine and sending the engine oil injection quantity to the controller;
the electronic horizon is used for acquiring a first gradient within a first distance in the running direction of the vehicle and sending the first gradient within the first distance to the controller;
a control valve for performing thermal management by controlling an intake air amount of the engine, an exhaust gas amount of the engine, or an EGR rate of the engine;
a memory for storing one or more programs;
the one or more programs, when executed by the controller, cause the controller to control a vehicle to implement the thermal management control method of any of claims 1-3.
5. A storage medium having a computer program stored thereon, wherein when the program is executed by a controller, the controller controls a vehicle to implement the thermal management control method according to any one of claims 1 to 3.
CN202111067539.5A 2021-09-13 2021-09-13 Thermal management control method and device, vehicle and storage medium Active CN113586268B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111067539.5A CN113586268B (en) 2021-09-13 2021-09-13 Thermal management control method and device, vehicle and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111067539.5A CN113586268B (en) 2021-09-13 2021-09-13 Thermal management control method and device, vehicle and storage medium

Publications (2)

Publication Number Publication Date
CN113586268A CN113586268A (en) 2021-11-02
CN113586268B true CN113586268B (en) 2023-01-20

Family

ID=78241985

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111067539.5A Active CN113586268B (en) 2021-09-13 2021-09-13 Thermal management control method and device, vehicle and storage medium

Country Status (1)

Country Link
CN (1) CN113586268B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114233487A (en) * 2021-11-23 2022-03-25 湖南道依茨动力有限公司 Engine control method and device, readable storage medium and work vehicle
CN114673584B (en) * 2022-04-20 2023-07-18 潍柴动力股份有限公司 Thermal management control method, device, equipment and medium for diesel engine aftertreatment system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5831645B2 (en) * 2012-10-31 2015-12-09 トヨタ自動車株式会社 Operation control device and method for internal combustion engine
DE112014000618T5 (en) * 2013-02-18 2015-10-22 Cummins, Inc. System, method and apparatus for managing the post-treatment temperature
US10576978B2 (en) * 2017-12-06 2020-03-03 Cummins, Inc. System and method for predictive engine and aftertreatment system control
WO2021158508A1 (en) * 2020-02-06 2021-08-12 Cummins Inc. Exhaust temperature controls for engine operation with cylinder deactivation
CN112814768B (en) * 2020-12-31 2022-04-05 潍柴动力股份有限公司 SCR (selective catalytic reduction) thermal management method and system

Also Published As

Publication number Publication date
CN113586268A (en) 2021-11-02

Similar Documents

Publication Publication Date Title
CN113586268B (en) Thermal management control method and device, vehicle and storage medium
CN110901648A (en) Vehicle, system, and logic for real-time ecological routing and adaptive drive control
US10328935B2 (en) Adaptive cruise control system and method of operating the same
US8606483B2 (en) Road grade coordinated engine control systems
US10309931B2 (en) Systems and methods for humidity determination and uses thereof
US9891623B2 (en) Automated driving system of vehicle
US10330644B2 (en) Systems and methods for humidity determination and uses thereof
US10676088B2 (en) Powertrain control system and method of operating the same
US10082792B2 (en) Automated driving vehicle control system
JP2020050086A (en) Vehicle control device, vehicle control method, and program
US20180057004A1 (en) Method and apparatus for vehicle accessory and load management
EP4030403A1 (en) Method and device for predicting exit for vehicle
CN210127883U (en) Diesel engine particle trap control system and vehicle
EP3333385B1 (en) Vehicle control system
CN113039110B (en) System and method for controlling overtaking maneuver of vehicle
US20180015804A1 (en) Automated control of vehicle ventilation system
US20190294180A1 (en) Method of Determining Gap Spacing for Vehicles in Platoons
WO2021204189A1 (en) Driveability adjustment method and device
CN108569278A (en) Exhaust gas analysis
CN110481534A (en) Vehicle control system, control method for vehicle and storage medium
CN107917008B (en) System and method for humidity determination and use thereof
US20200353944A1 (en) Adjusting an operating mode of a vehicle based on an expected resource level
CN114519936B (en) Traffic light intersection engine start and stop intelligent control method and system based on V2X
CN113404575B (en) GPF regeneration optimization method and GPF regeneration opportunity evaluation system
US10906553B2 (en) Systems and methods for vehicle acceleration event prediction inhibit

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