CN116691679A - Vehicle extension start-stop control method, device, equipment and storage medium - Google Patents

Vehicle extension start-stop control method, device, equipment and storage medium Download PDF

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Publication number
CN116691679A
CN116691679A CN202310617175.6A CN202310617175A CN116691679A CN 116691679 A CN116691679 A CN 116691679A CN 202310617175 A CN202310617175 A CN 202310617175A CN 116691679 A CN116691679 A CN 116691679A
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CN
China
Prior art keywords
engine
transmission
vehicle
extended
target vehicle
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.)
Pending
Application number
CN202310617175.6A
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Chinese (zh)
Inventor
王明玉
曾云鹏
宁甲奎
孙鹏远
李家玲
曹龙
张荣辉
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FAW Group Corp
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FAW Group Corp
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 FAW Group Corp filed Critical FAW Group Corp
Priority to CN202310617175.6A priority Critical patent/CN116691679A/en
Publication of CN116691679A publication Critical patent/CN116691679A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18018—Start-stop drive, e.g. in a traffic jam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/10—Accelerator pedal position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/12—Brake pedal position
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Abstract

The invention provides a vehicle extension start-stop control method, device, equipment and storage medium. The method comprises the following steps: acquiring a vehicle running state of a target vehicle; determining whether an engine of the target vehicle meets a first extended stop condition based on the vehicle operating state; determining whether a transmission of the target vehicle has a second extended stop condition if the engine meets a first extended stop condition; under the condition that the transmission is provided with the second extended stop condition, the transmission extended stop control is executed, and an engine stop instruction is sent to the target vehicle engine so that the engine is extended to stop, and therefore the purpose that the vehicle can realize engine stop sliding on the basis that an electric oil pump is not required to be assembled can be achieved, meanwhile, vehicle fuel is further saved, and driving experience of a driver is improved.

Description

Vehicle extension start-stop control method, device, equipment and storage medium
Technical Field
The invention relates to the technical field of intelligent control of vehicle power systems, in particular to a vehicle expansion start-stop control method, device and equipment and a storage medium.
Background
With the development of energy saving technology for vehicle driving, engine start-stop technology has been widely applied to the current vehicles. When the vehicle runs, after the driver steps on the brake, the vehicle stops, the engine stops, after the driver releases the brake pedal, the engine starts again, the vehicle can continue running, and the purpose of saving the fuel consumption of the vehicle is achieved through stopping the engine.
At present, the engine start-stop technology can realize the functions of stopping the engine, sliding and the like in the running process of the vehicle under the cooperation of an electric oil pump in the transmission. However, the electric oil pump is added in the transmission, so that the cost of the transmission is increased, and the cost of the whole vehicle is increased.
Disclosure of Invention
The invention provides a vehicle expansion start-stop control method, device, equipment and storage medium, which aim to realize that an engine stops sliding on the basis that an electric oil pump is not required to be assembled on a vehicle, further save vehicle fuel and improve driving experience of a driver.
According to one aspect of the invention, a vehicle extended start-stop control method is provided. The method comprises the following steps:
acquiring a vehicle running state of a target vehicle;
determining whether an engine of the target vehicle meets a first extended stop condition based on the vehicle operating state;
determining whether a transmission of the target vehicle has a second extended stop condition if the engine meets a first extended stop condition;
and executing transmission extended stop control and sending an engine stop command to the target vehicle engine to cause the engine to be extended stopped when the transmission is provided with the second extended stop condition.
According to another aspect of the present invention, a vehicle extension start-stop control device is provided. The device comprises:
the vehicle running state acquisition module is used for acquiring the vehicle running state of the target vehicle;
a first stop condition determination module for determining whether an engine of the target vehicle meets a first extended stop condition based on the vehicle operating state;
a second stop condition determination module configured to determine whether a transmission of the target vehicle has a second extended stop condition if the engine meets a first extended stop condition;
and the extended stop control module is used for executing the extended stop control of the transmission and sending an engine stop instruction to the target vehicle engine so as to enable the engine to be subjected to extended stop when the transmission is provided with the second extended stop condition.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the vehicle extended start-stop control method according to any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the vehicle extended start-stop control method according to any one of the embodiments of the present invention when executed.
According to the technical scheme, the vehicle running state of the target vehicle is obtained. Determining whether an engine of the target vehicle meets a first extended stop condition based on the vehicle operating state. And determining whether a transmission of the target vehicle has a second extended stop condition if the engine meets the first extended stop condition. Under the condition that the transmission is provided with the second extended stop condition, the transmission extended stop control is executed, and an engine stop instruction is sent to the target vehicle engine so that the engine is extended to stop, and the engine stop control of the vehicle under a certain vehicle speed condition is completed on the premise that an electric oil pump is not added in the dual-clutch transmission, so that the vehicle speed under the engine stop condition is effectively extended, the vehicle fuel is further saved, and the driving experience of a driver is improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a powertrain architecture supporting extended start-stop of a vehicle according to a first embodiment of the present invention;
FIG. 2 is a flowchart of a vehicle extended start-stop control method according to a first embodiment of the present invention;
FIG. 3 is a flowchart of a vehicle extended start-stop control method provided according to a second embodiment of the present invention;
fig. 4 is a schematic diagram of a vehicle extended start-stop control device according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device implementing a vehicle extended start-stop control method according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a schematic diagram of a power system supporting extended start-stop of a vehicle according to an embodiment of the present invention. Wherein, support the driving system structure that vehicle extension started and stopped includes: the BSG (Belt-Driven Starter Generator) motor (3) is arranged at the front end of the engine (1) and is connected with the engine through a Belt, wherein the BSG motor (3) is powered by a 48V battery (4), the engine (1) can be directly started through the BSG motor (3), and under the condition of power-on and starting of a vehicle, the engine (1) is started through a starter (7) under the control of an engine control unit ECU (8). The engine (1) is connected with the transmission (2), and after the two clutches of the transmission are completely separated, the power transmission between the engine (1) and the transmission (2) can be cut off, so that the engine is stopped under the condition of the vehicle speed, and the expansion start and stop are realized. The ECU (8) and the transmission control unit TCU (9) are powered by the 12V battery (6), and the 48V battery (4) and the 12V battery (6) are connected through the DCDC converter (5) to realize energy conversion from the 48V system to the 12V system.
Fig. 2 is a flowchart of a vehicle extended start-stop control method according to an embodiment of the present invention, where the embodiment is applicable to a situation where a vehicle is stopped during a coast, and is particularly applicable to a situation where a vehicle with a dual clutch transmission is stopped during a coast. The method may be performed by a vehicle extension start-stop control device, which may be implemented in hardware and/or software, which may be configured in an electronic device.
As shown in fig. 2, the method includes:
s201, acquiring a vehicle running state of a target vehicle.
The target vehicle may refer to a vehicle to be subjected to vehicle expansion start-stop. The vehicle operating state may include at least one of a coasting state and a braking state.
S202, determining whether an engine of the target vehicle meets a first extended stop condition based on the vehicle running state.
Wherein the first extended stop condition may refer to a condition that the engine meets an extended stop of the engine. The first extended stop condition includes, but is not limited to, the target vehicle being in at least one of a coast state or a brake state. The coasting state specifically means that the vehicle has a certain initial speed, such as 20km/h, the driver releases the throttle and the brake, and the target vehicle runs forward under the own inertia condition. The braking state specifically means that the vehicle has a certain initial speed, the driver releases the accelerator and presses the brake pedal, and the target vehicle is in the deceleration process.
Specifically, the acquired vehicle running state is matched with the first extended stop condition, and whether the engine of the target vehicle meets the first extended stop condition in the current vehicle running state is determined.
S203, if the engine meets the first extended stop condition, determining whether the transmission of the target vehicle has the second extended stop condition.
Wherein the second extended stop condition may refer to whether the transmission state meets the condition of an extended stop of the transmission. The second extended stop condition includes at least one of a normal operation of the transmission, a current road grade of the target vehicle being located in a preset grade interval, a current deceleration of the target vehicle being lower than a preset deceleration, a current rotation angle of the target vehicle steering wheel being smaller than a preset rotation angle, a distance traveled between a last stop of the target vehicle and triggering a current stop being greater than a preset distance, and a current master cylinder pressure of the target vehicle being greater than a preset pressure. The preset gradient interval, the preset deceleration, the preset rotation angle and the preset distance can be dynamically set according to actual conditions, and the embodiment is not limited specifically herein.
Specifically, under the condition that the engine meets the first extended stop condition, acquiring a transmission running state of the target vehicle, matching the transmission running state with the second extended stop condition, and determining whether the transmission of the target vehicle meets the second extended stop condition under the current transmission running state. For example, when the vehicle is under a coasting or braking condition, the engine detects that the vehicle enters an extended stop, an extended stop request flag is set by the engine control unit ECU, and after receiving a stop request of the engine, the transmission control unit TCU checks whether the transmission has an extended stop condition.
Exemplary condition checks for transmission system entering extended stop include the engine system detecting that a current vehicle operating condition may enter an engine extended stop, sending an extended stop request to the transmission, detecting an extended stop condition of the transmission after the transmission has detected the extended stop request, specifically detecting whether the transmission system is currently free of faults, whether the transmission oil temperature is in a set temperature interval, exemplary transmission oil temperatures are in the interval 20 ℃ to 110 ℃, wherein if the transmission oil temperature is in the intervalThe transmission is not allowed to enter an extended stop without the set oil temperature interval. The voltage of a battery of the vehicle is in a set voltage range, the voltage range of an example is between 12.0V and 15.0V, the current gradient of the vehicle is in a set gradient range, the gradient is within-5% of the gradient in an example, the gradient is overlarge, the vehicle is on an ascending slope or a descending slope, and the transmission prohibits the vehicle from entering an extended stop; the vehicle deceleration is less than a set deceleration threshold, an exemplary deceleration threshold being 5m/s 2 When the deceleration of the vehicle is excessive, the transmission is not allowed to enter an extended stop; the brake master cylinder pressure is greater than a set pressure threshold, an exemplary master cylinder pressure threshold is set to 20bar or a distance is set to 2m after detecting that the vehicle has been driven for a second time after the last stop, preventing the vehicle from repeatedly entering an engine stop state under a traffic jam following vehicle condition. When the target vehicle is detected to meet the above conditions, the transmission determines that the current state may enter extended stop preparation.
S204, when the transmission has the second extended stop condition, performing transmission extended stop control, and sending an engine stop command to the target vehicle engine so as to enable the engine to be subjected to extended stop.
The transmission extended stop control may refer to preparation of the transmission before the engine is stopped. An engine shutdown command may refer to a command that indicates an engine shutdown.
And under the condition that the transmission detects that the second extended stop condition is met, the transmission executes the transmission extended stop control, a transmission stop preparation completion state is set after the stop control is completed, and the engine receives the stop preparation completion state of the transmission to execute the engine stop in response to the engine extended stop request, so that the whole vehicle enters the extended stop state. Specifically, the transmission may be instructed to perform the transmission extended stop control under the condition that the transmission is provided with the second extended stop, and after the transmission extended stop control is performed, an engine stop instruction may be sent to the target vehicle engine to perform the extended stop of the engine.
For example, under conditions where the transmission is provided with the second extended stop, performing transmission extended stop control includes reducing clutch oil pressure in the transmission to a preset pressure, such as controlling odd clutch pressure and/or even clutch pressure to be less than 0.5bar, reducing engine torque transfer, and performing a gear control operation on the transmission.
Illustratively, the specific gear control operation procedure for the transmission includes: acquiring the rotation speed of an output shaft corresponding to the power output shaft of the transmission in real time; and determining the target rotation speed corresponding to the odd-numbered shaft of the transmission after the target vehicle is switched to the desired gear according to the rotation speed of the output shaft and the desired gear rotation speed ratio, wherein the desired gear is the first gear which is switched to the odd-numbered shaft of the transmission when the target rotation speed corresponding to the odd-numbered shaft of the transmission is lower than or equal to the preset rotation speed.
The first gear in the technical scheme of the invention can be 1 gear in the double-clutch transmission. The preset rotation speed may refer to a highest rotation speed corresponding to an odd-numbered shaft of the transmission when the target vehicle is ensured to be able to stably travel after the target vehicle is engaged in the first gear, and may be 1600 rotations/min, for example.
Specifically, the transmission output shaft rotation speed is acquired in real time through a transmission output shaft rotation speed sensor of the target vehicle, and the product of the transmission output shaft rotation speed and a desired gear rotation speed ratio is used for determining the target rotation speed corresponding to the odd-numbered transmission shaft after the target vehicle is switched to the desired gear. For example, the transmission output shaft speed is 800 rpm, the desired gear speed ratio is 2, and the target speed is 1600 rpm. When the target rotating speed corresponding to the odd-numbered shafts of the transmission is lower than or equal to the preset rotating speed, the odd-numbered shafts of the transmission are hung into the first gear, so that the phenomenon that the speed of the odd-numbered shafts is pulled up to have obvious braking feel on the whole transmission due to overlarge change of the speed difference of the rotating speeds of the odd-numbered shafts in the gear hanging process can be prevented, and the gear shifting quality of the transmission is poor, so that the user experience is influenced. For example, when the gear corresponding to the first gear shift fork of the transmission is detected to be fully engaged, and the transmission gear is judged to be successfully engaged, the engine can be fed back with the state of the transmission extended stop preparation completion, and the engine is waited for to stop.
If it is determined thatIn the case that the engine meets the first extended stop condition，And at the said In the case of a transmission provided with said second extended stop condition,the target vehicle accords with the stopping condition, the transmission firstly executes clutch oil drainage control, executes gear shifting again, finally executes control logic for shifting into the first gear, executes shifting fork gear shifting and shifting actions after the clutch oil drainage, is not easy to generate shifting noise in the transmission system, and can realize better gear shifting control effect in the preparation process of expanding stopping.
Further, the technical scheme of the invention intelligently expands start-stop control of the target vehicle, determines the vehicle running state of the target vehicle in real time, and determines the vehicle running state of the target vehicleIn the case that the engine meets the first extended stop condition, and in the event that the transmission is provided with the second extended stop condition,indicating that the target vehicle meets the stop conditionAdvancing in advance The odd-numbered shafts in the transmission are engaged in the first gear, and after other conditions are performed (e.g.,executing clutch drain control)， An extended engine shutdown is performed.In determiningIn the event that the engine does not meet the first extended stop condition, and/or, in In the event that the transmission is not provided with the second extended stop condition,and if the target vehicle does not accord with the stop condition, executing corresponding gear switching control logic according to the current corresponding vehicle running state of the target vehicle, thereby realizing automatic intelligent control of whether the engine stops running or not by the target vehicle, avoiding manual participation, providing more reasonable driving experience for drivers and passengers, and improving user experience.
According to the technical scheme, the vehicle running state of the target vehicle is obtained. Determining whether an engine of the target vehicle meets a first extended stop condition based on the vehicle operating state. And determining whether a transmission of the target vehicle has a second extended stop condition if the engine meets the first extended stop condition. Under the condition that the transmission is provided with the second extended stop condition, the transmission extended stop control is executed, and an engine stop instruction is sent to the target vehicle engine so that the engine is extended to stop, and the engine stop control of the vehicle under a certain vehicle speed condition is completed on the premise that an electric oil pump is not added in the dual-clutch transmission, so that the vehicle speed under the engine stop condition is effectively extended, the vehicle fuel is further saved, and the driving experience of a driver is improved.
On the basis of the above embodiments, after the engine is subjected to extended stop, the method includes: acquiring driving operation information of a driver of the target vehicle; and sending an engine starting instruction to the target vehicle engine to start the engine under the condition that the driving operation information meets preset engine starting information.
The driving operation information may include a driving operation instruction of the driver for the target vehicle. The preset engine start information includes at least one of vehicle acceleration instruction information and/or direction rotation information, for example.
Specifically, in the course of the extended stop of the target vehicle, when it is detected that the driving operation information of the driver of the target vehicle satisfies the preset engine start information, the vehicle is exited from the extended stop. The invention preferably starts the engine through the BSG motor of the 48V system, and the transmission uses the odd clutch to transmit the torque of the engine, so that the dynamic property of the vehicle in starting running is ensured. The BSG motor of the 48V system is used for starting the engine, so that the shake in the starting process of the engine can be effectively reduced, and the shake problem in the starting process of the engine is solved.
For example, the engine of the target vehicle is prohibited from performing an extended stop if the engine does not meet a first extended stop condition and/or the transmission is not provided with the second extended stop condition.
Specifically, if the engine and/or the transmission detects that the stop is not allowed, the transmission can execute gear shifting control according to a lower gear shifting line, does not respond to the stop and controls according to an expected gear shifting line, and at the moment, the gear shifting quality is good, and the driving experience of a user is improved.
Example two
Fig. 3 is a flowchart of a vehicle extended start-stop control method according to a second embodiment of the present invention, and this embodiment provides a preferred embodiment. As shown in fig. 3, the method includes:
s301, acquiring a vehicle running state of a target vehicle.
S302, determining whether an engine of the target vehicle meets a first extended stop condition based on the vehicle running state. If so, step S303 is performed. If not, step S305 is performed.
S303, determining whether the transmission of the target vehicle has a second extended stop condition. If so, step S304 is performed. If not, step S305 is executed.
S304, performing transmission extended stop control, and sending an engine stop instruction to the target vehicle engine to wait for the engine to be extended stopped.
S305, the transmission does not execute the extended stop control, and the transmission is controlled according to the expected gear shift line, so that the fork picking noise is restrained.
S306, the engine is kept in a starting state.
Example III
Fig. 4 is a schematic structural diagram of a vehicle extended start-stop control device according to a third embodiment of the present invention. As shown in fig. 4, the apparatus includes: a vehicle running state acquisition module 401, a first stop condition determination module 402, a second stop condition determination module 403, and an extended stop control module 404.
Wherein, the liquid crystal display device comprises a liquid crystal display device,
a vehicle running state acquisition module 401 for acquiring a vehicle running state of a target vehicle;
a first stop condition determination module 402 for determining whether an engine of the target vehicle meets a first extended stop condition based on the vehicle operating state;
a second stop condition determination module 403 configured to determine whether a transmission of the target vehicle has a second extended stop condition if the engine meets a first extended stop condition;
an extended stop control module 404 for performing transmission extended stop control and sending an engine stop command to the target vehicle engine to cause the engine to be extended stopped if the transmission is provided with the second extended stop condition.
According to the technical scheme, the vehicle running state of the target vehicle is obtained. Determining whether an engine of the target vehicle meets a first extended stop condition based on the vehicle operating state. And determining whether a transmission of the target vehicle has a second extended stop condition if the engine meets the first extended stop condition. Under the condition that the transmission is provided with the second extended stop condition, the transmission extended stop control is executed, and an engine stop instruction is sent to the target vehicle engine so that the engine is extended to stop, and the engine stop control of the vehicle under a certain vehicle speed condition is completed on the premise that an electric oil pump is not added in the dual-clutch transmission, so that the vehicle speed under the engine stop condition is effectively extended, the vehicle fuel is further saved, and the driving experience of a driver is improved.
Optionally, the first extended stop condition includes, but is not limited to, the target vehicle being in a coast state or a brake state; the second extended stop condition includes at least one of normal operation of the transmission, a current road grade of the target vehicle being located in a preset grade interval, a current deceleration of the target vehicle being lower than a preset deceleration, a current rotation angle of the target vehicle steering wheel being smaller than a preset rotation angle, a distance traveled between a last stop of the target vehicle and triggering a current stop being greater than a preset distance, and a current master cylinder pressure of the target vehicle being greater than a preset pressure.
Optionally, the extended shutdown control module 404 includes:
a transmission oil pressure adjusting unit for reducing a clutch oil pressure in the transmission to a preset pressure;
and the gear control operation unit is used for performing gear control operation on the transmission.
Optionally, the gear control operation unit is specifically configured to:
acquiring the rotation speed of an output shaft corresponding to the power output shaft of the transmission in real time;
determining a target rotating speed corresponding to an odd-numbered shaft of the transmission after the target vehicle is switched to a desired gear according to the rotating speed of the output shaft and the desired gear rotating speed ratio, wherein the desired gear is a first gear;
and under the condition that the target rotating speed corresponding to the odd-numbered shafts of the transmission is lower than or equal to the preset rotating speed, switching the gear of the odd-numbered shafts of the transmission into a first gear.
Optionally, the apparatus comprises:
the engine starting control module is used for acquiring driving operation information of the target vehicle driver; and sending an engine starting instruction to the target vehicle engine to start the engine under the condition that the driving operation information meets preset engine starting information.
Optionally, the preset engine start information includes vehicle acceleration instruction information and/or direction rotation information.
Optionally, the apparatus comprises:
and the extended stop prohibition module is used for prohibiting the engine of the target vehicle from performing extended stop under the condition that the engine does not meet a first extended stop condition and/or the transmission does not have the second extended stop.
The vehicle extension start-stop control device provided by the embodiment of the invention can execute the vehicle extension start-stop control method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example IV
Fig. 5 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 5, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as the method vehicle extension start-stop control.
In some embodiments, the method vehicle extended start-stop control may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the method vehicle extension start-stop control described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the method vehicle extension start-stop control in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. An extended start-stop control method for a vehicle, comprising:
acquiring a vehicle running state of a target vehicle;
determining whether an engine of the target vehicle meets a first extended stop condition based on the vehicle operating state;
determining whether a transmission of the target vehicle has a second extended stop condition if the engine meets a first extended stop condition;
and executing transmission extended stop control and sending an engine stop command to the target vehicle engine to cause the engine to be extended stopped when the transmission is provided with the second extended stop condition.
2. The method of claim 1, wherein the first extended stop condition includes, but is not limited to, the target vehicle being in a coast state or a brake state; the second extended stop condition includes at least one of normal operation of the transmission, a current road grade of the target vehicle being located in a preset grade interval, a current deceleration of the target vehicle being lower than a preset deceleration, a current rotation angle of the target vehicle steering wheel being smaller than a preset rotation angle, a distance traveled between a last stop of the target vehicle and triggering a current stop being greater than a preset distance, and a current master cylinder pressure of the target vehicle being greater than a preset pressure.
3. The method of claim 1, wherein performing transmission extended stop control if the transmission is provided with the second extended stop comprises:
and reducing the clutch oil pressure in the transmission to a preset pressure, and performing gear control operation on the transmission.
4. A method according to claim 3, wherein said performing a gear control operation on said transmission comprises:
acquiring the rotation speed of an output shaft corresponding to the power output shaft of the transmission in real time;
determining a target rotating speed corresponding to an odd-numbered shaft of the transmission after the target vehicle is switched to a desired gear according to the rotating speed of the output shaft and the desired gear rotating speed ratio, wherein the desired gear is a first gear;
and under the condition that the target rotating speed corresponding to the odd-numbered shafts of the transmission is lower than or equal to the preset rotating speed, switching the gear of the odd-numbered shafts of the transmission into a first gear.
5. The method of claim 1, comprising, after the engine is extended shut down:
acquiring driving operation information of a driver of the target vehicle;
and sending an engine starting instruction to the target vehicle engine to start the engine under the condition that the driving operation information meets preset engine starting information.
6. The method of claim 5, wherein the preset engine start information includes vehicle acceleration command information and/or direction rotation information.
7. The method as recited in claim 1, further comprising:
and prohibiting the engine of the target vehicle from performing extended stop under the condition that the engine does not meet a first extended stop condition and/or the transmission does not have the second extended stop.
8. An extended start-stop control device for a vehicle, comprising:
the vehicle running state acquisition module is used for acquiring the vehicle running state of the target vehicle;
a first stop condition determination module for determining whether an engine of the target vehicle meets a first extended stop condition based on the vehicle operating state;
a second stop condition determination module configured to determine whether a transmission of the target vehicle has a second extended stop condition if the engine meets a first extended stop condition;
and the extended stop control module is used for executing the extended stop control of the transmission and sending an engine stop instruction to the target vehicle engine so as to enable the engine to be subjected to extended stop when the transmission is provided with the second extended stop condition.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the vehicle extended start-stop control method of any one of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to implement the vehicle extended start stop control method of any one of claims 1-7 when executed.
CN202310617175.6A 2023-05-29 2023-05-29 Vehicle extension start-stop control method, device, equipment and storage medium Pending CN116691679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310617175.6A CN116691679A (en) 2023-05-29 2023-05-29 Vehicle extension start-stop control method, device, equipment and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310617175.6A CN116691679A (en) 2023-05-29 2023-05-29 Vehicle extension start-stop control method, device, equipment and storage medium

Publications (1)

Publication Number Publication Date
CN116691679A true CN116691679A (en) 2023-09-05

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Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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