CN114940154A - Hybrid electric vehicle launch starting control method - Google Patents
Hybrid electric vehicle launch starting control method Download PDFInfo
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- CN114940154A CN114940154A CN202110170351.7A CN202110170351A CN114940154A CN 114940154 A CN114940154 A CN 114940154A CN 202110170351 A CN202110170351 A CN 202110170351A CN 114940154 A CN114940154 A CN 114940154A
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- 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
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- 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
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- 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
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/105—Speed
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- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
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- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
- B60W2050/146—Display means
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- 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
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- 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
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- 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
- B60W2540/16—Ratio selector position
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- 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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0644—Engine speed
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- 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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
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- 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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
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- 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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
A hybrid electric vehicle launch start control method comprises launch start enabling judgment, launch start control, launch start engine rotating speed control, launch start wheel torque control and hybrid electric controller signal interaction control, if a vehicle enters a launch start state after the launch start enabling judgment, launch start is controlled through the launch start control, the rotating speed of an engine is controlled through the launch start engine rotating speed control, wheel torque is controlled through the launch start wheel torque control, and a vehicle control unit VCU performs signal interaction with a motor controller PCU and an engine management system EMS through the hybrid electric controller signal interaction control.
Description
Technical Field
The invention relates to the technical field of automobile engines, in particular to a hybrid electric vehicle launch start control method.
Background
The launch starting is an accelerating technology which utilizes a gearbox to adjust the rotating speed of an engine to an output platform of the maximum torque, so that the engine is output with the maximum torque at the moment of vehicle starting, and the optimal acceleration is realized. If the catapult starting is used, the engine can output the maximum torque at the moment of starting the vehicle, so that the vehicle is accelerated rapidly, and more driving pleasure can be given to a user.
The common launch starting control method in the market at present is mostly complex in operation, and the pedal may need to be stepped for many times or has certain risk of mistaken touch. In addition, the starting process of an engine and a motor of the vehicle during the launch starting is different from that of the conventional driving, so that a large amount of manual operation and debugging are needed, and time and labor are wasted.
Disclosure of Invention
In view of the above, the invention provides a hybrid electric vehicle launch starting control method which is simple in operation and is not easy to touch by mistake.
The hybrid electric vehicle launch start control method provided by the invention comprises launch start enable judgment, launch start control, launch start engine rotating speed control, launch start wheel torque control and hybrid controller signal interaction control, if a vehicle enters a launch start state after the launch start enable judgment, launch start is controlled through the launch start control, the rotating speed of an engine is controlled through the launch start engine rotating speed control, wheel torque is controlled through the launch start wheel torque control, and a vehicle control unit VCU performs signal interaction with a motor controller PCU and an engine management system EMS through the hybrid controller signal interaction control.
Further, the launch enabling judgment comprises the following steps:
step S1: judging whether the gear is a forward gear and whether the current vehicle speed is less than a vehicle speed threshold, if the gear is the forward gear and the current vehicle speed is less than the vehicle speed threshold, entering a step S2;
step S2: judging whether a launch start switch of the vehicle is pressed, if the vehicle is provided with the launch start switch and the launch start switch is pressed, entering launch start control, and if the vehicle is provided with the launch start switch and the launch start switch is not pressed, entering step S3;
step S3: and judging whether the accelerator opening is larger than an accelerator opening threshold or not and whether the brake pedal opening is larger than a brake pedal opening threshold or not, and if the accelerator opening is larger than the accelerator opening threshold and the brake pedal opening is larger than the brake pedal opening threshold, entering launch starting control.
Further, in step S2, if the vehicle does not include the launch start switch, the process proceeds to step S3.
Further, the launch control comprises the following steps:
step S4: sending an instruction to an instrument, and reminding a user that the launch start is started by the instrument to pay attention to safety;
step S5: controlling an engine to start and load torque, and entering launch starting engine starting control and launch starting wheel torque control;
step S6: and judging whether the opening degree of the brake pedal is zero within a first preset time, and if the opening degree of the brake pedal reaches zero at any time point within the first preset time, catapulting and starting the vehicle.
Further, in step S6, the first preset time is a calibrated value, and if the opening degree of the brake pedal does not reach zero within the first preset time, the catapult start and the engine start are cancelled.
Further, the launch start engine start control includes the steps of:
step S7: the VCU controls the engine to start, and controls the engine to run at a first engine speed after the engine finishes oil injection and ignition.
Further, the first engine speed is a calibrated value and ranges from 1200rpm to 3000 rpm.
Further, the launch wheel side torque control comprises the following steps:
step S8: the VCU calculates the wheel torque demand, obtains the motor torque demand and/or the motor torque demand according to the wheel torque demand, and distributes the wheel torque demand to the engine and/or the motor.
Further, in step S8, the vehicle control unit VCU may calculate the wheel-side torque request according to a table of accelerator opening degrees, or may use the maximum wheel-side torque that the system can output as the wheel-side torque request.
Further, the hybrid controller signal interaction control comprises:
the VCU of the vehicle controller can send a user reminding instruction to the instrument when the vehicle enters a launch starting state, so that the user is reminded that launch starting is started, and safety is paid attention to;
the VCU can send a motor torque demand to the PCU, and the PCU receives the motor torque demand, controls the motor to output corresponding torque according to the motor torque demand and feeds back the actual torque of the motor to the VCU;
the vehicle control unit VCU can send an engine torque demand to the engine management system EMS, the engine management system EMS receives the engine torque demand, then controls the engine to output corresponding torque according to the engine torque demand, and feeds back the actual torque of the engine to the vehicle control unit VCU.
In conclusion, the invention judges and controls the launch start of the vehicle by launch start enabling judgment, launch start control, launch start engine speed control and launch start wheel torque control, realizes the interaction between the VCU, the PCU, the EMS and the instrument of the vehicle controller through the signal interaction control of the hybrid power controller, and gives more driving fun to the user while realizing the launch start function of the hybrid power vehicle and providing stronger starting power. The hybrid electric vehicle launch start control method provided by the invention does not need a user to continuously tread on the brake pedal for multiple times, can be started only by pressing the launch start switch or simultaneously treading on the accelerator pedal and the brake pedal, is simple to use and is not easy to trigger by mistake.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of launch enabling determination provided by the present invention.
Fig. 2 is a schematic diagram of the launch start control provided by the present invention.
Fig. 3 is a schematic diagram of the rotational speed control of the launch start engine provided by the invention.
Fig. 4 is a schematic diagram of the launch starting wheel torque control provided by the invention.
FIG. 5 is a schematic diagram of hybrid controller signal interaction control provided by the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.
The hybrid electric vehicle launch start control method comprises launch start enable judgment, launch start control, launch start engine rotating speed control, launch start wheel torque control and hybrid electric controller signal interaction control, if a vehicle enters a launch start state after the launch start enable judgment, launch start is controlled through the launch start control, the rotating speed of an engine is controlled through the launch start engine rotating speed control, wheel torque is controlled through the launch start wheel torque control, and a vehicle control unit VCU performs signal interaction with a motor controller PCU and an engine management system EMS through the hybrid electric controller signal interaction control.
Referring to fig. 1, in the present invention, the determination of the launch enabling includes the following steps:
step S1: judging whether the current gear is a forward gear and the current vehicle speed is less than a vehicle speed threshold, and if the current gear is the forward gear and the current vehicle speed is less than the vehicle speed threshold, entering the step S2;
step S2: judging whether an ejection starting switch of the vehicle is pressed, if the vehicle is provided with the ejection starting switch and the ejection starting switch is pressed, entering ejection starting control, and if the vehicle is provided with the ejection starting switch and the ejection starting switch is not pressed, entering step S3;
step S3: and judging whether the accelerator opening is larger than an accelerator opening threshold or not and whether the brake pedal opening is larger than a brake pedal opening threshold or not, and if the accelerator opening is larger than the accelerator opening threshold and the brake pedal opening is larger than the brake pedal opening threshold, entering launch starting control.
Specifically, in step S1, the vehicle speed threshold is a calibrated value, in the present embodiment, the vehicle speed threshold is calibrated to 10 km/h; in step S2, since the launch start switch is not installed in all vehicle types, if the vehicle does not have the launch start switch, the process may skip step S2 and proceed directly to step S3; in step S3, the accelerator opening threshold and the pedal opening threshold are both calibrated values, in this embodiment, the accelerator opening threshold is calibrated to be 80%, and the brake pedal opening threshold is calibrated to be 80%, in other embodiments, the brake pedal opening greater than the brake pedal opening threshold may be replaced by the brake master cylinder pressure greater than the brake master cylinder pressure threshold, and the brake master cylinder pressure threshold is calibrated to be the brake master cylinder pressure value corresponding to 80% of the brake pedal opening.
Referring to fig. 2, the launch start control includes the following steps:
step S4: sending an instruction to an instrument to remind a user that the launch start is started, and paying attention to safety;
step S5: controlling an engine to start and load torque, and entering launch starting engine starting control and launch starting wheel torque control;
step S6: and judging whether the opening degree of the brake pedal is zero within a first preset time, and if the opening degree of the brake pedal reaches zero at any time point within the first preset time, catapulting and starting the vehicle.
Specifically, step S4 and step S5 are executed simultaneously after the determination of the launch enabling; the launch starting engine starting control and the launch starting wheel torque control in the step S5 can be executed at the same time, and the execution sequence can be adjusted according to the vehicle type, so long as the execution is carried out before the launch starting of the vehicle; in step S6, the first preset time is a calibration value, the first preset time is 10 seconds in the present embodiment, and the time point when the first preset time is started is the time point when the vehicle control unit VCU controls the engine to start. If the opening degree of the brake pedal reaches zero at any time point within the first preset time, namely the brake pedal is completely released within 10 seconds, the vehicle is launched and started; if the opening degree of the brake pedal does not reach zero within the first preset time, namely the brake pedal is stepped on for no more than 10 seconds and is not completely released, the catapult starting and the engine starting are cancelled, and the purposes of saving energy and protecting the engine are achieved.
Referring also to fig. 3, the launch start engine start control includes the steps of:
step S7: the VCU controls the engine to start, and controls the engine to run at a first engine speed after the engine finishes oil injection and ignition.
Specifically, in step S7, the first engine speed is a calibration value, and in this embodiment, the first engine speed is calibrated to a value between 1200rpm and 3000rpm, which is much higher than the starting engine speed of the conventional vehicle. The conventional vehicle starting mode needs to drag an engine to start in the driving process and needs to overcome the drag resistance torque of the engine, so that the wheel torque can be reduced in the engine starting process, vehicle suspension can be caused, and the driving experience is influenced. The engine is started in situ when a driver steps on the brake pedal and does not loosen the brake pedal in the catapult starting process, so that the starting and accelerating processes are not carried out, the engine is not started, the suspension is avoided, the catapult starting has better dynamic performance, and once the vehicle is started, the vehicle is accelerated rapidly.
Referring to fig. 4, the launch starting wheel torque control includes the following steps:
step S8: the VCU of the vehicle control unit calculates the wheel torque demand, obtains the engine torque demand and/or the motor torque demand according to the wheel torque demand, and distributes the wheel torque demand to the engine and/or the motor.
Specifically, in step S8, the vehicle control unit VCU can calculate the wheel-side torque request according to a table look-up of the accelerator opening, or use the maximum wheel-side torque that the system can output as the wheel-side torque request. In the conventional vehicle starting process, the wheel-side torque reaches a target value from the actual vehicle starting process, an increasing process lasts for about hundreds of milliseconds, and the catapult starting process loads the wheel-side torque to the target value when an engine is started in situ, so that the dynamic property is better.
Referring to fig. 5, the hybrid controller signal interaction control includes:
the VCU of the vehicle controller can send a user reminding instruction to the instrument when the vehicle enters a launch starting state, so that the user is reminded that launch starting is started, and safety is paid attention to;
the VCU can send a motor torque demand to the PCU, and the PCU receives the motor torque demand, controls the motor to output corresponding torque according to the motor torque demand and feeds back the actual torque of the motor to the VCU;
the vehicle control unit VCU can send an engine torque demand to the engine management system EMS, the engine management system EMS receives the engine torque demand, then controls the engine to output corresponding torque according to the engine torque demand, and feeds back the actual torque of the engine to the vehicle control unit VCU.
In conclusion, the invention judges and controls the launch start of the vehicle by launch start enabling judgment, launch start control, launch start engine speed control and launch start wheel torque control, realizes the interaction between the VCU, the PCU, the EMS and the instrument of the vehicle controller through the signal interaction control of the hybrid power controller, and gives more driving fun to the user while realizing the launch start function of the hybrid power vehicle and providing stronger starting power. The hybrid electric vehicle launch start control method provided by the invention does not need a user to continuously tread on the brake pedal for multiple times, can be started only by pressing the launch start switch or simultaneously treading on the accelerator pedal and the brake pedal, is simple to use and is not easy to trigger by mistake.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A hybrid electric vehicle launch start control method is characterized in that: the hybrid electric vehicle launch start control method comprises launch start enabling judgment, launch start control, launch start engine rotating speed control, launch start wheel torque control and hybrid electric controller signal interaction control, if a vehicle enters a launch start state after the launch start enabling judgment, launch start is controlled through the launch start control, the rotating speed of an engine is controlled through the launch start engine rotating speed control, wheel torque is controlled through the launch start wheel torque control, and a vehicle control unit VCU performs signal interaction with a motor controller PCU and an engine management system EMS through the hybrid electric controller signal interaction control.
2. The hybrid electric vehicle launch starting control method according to claim 1, characterized in that: the launch enabling judgment comprises the following steps:
step S1: judging whether the gear is a forward gear and whether the current vehicle speed is less than a vehicle speed threshold, if the gear is the forward gear and the current vehicle speed is less than the vehicle speed threshold, entering a step S2;
step S2: judging whether an ejection starting switch of the vehicle is pressed, if the vehicle is provided with the ejection starting switch and the ejection starting switch is pressed, entering ejection starting control, and if the vehicle is provided with the ejection starting switch and the ejection starting switch is not pressed, entering step S3;
step S3: and judging whether the accelerator opening is larger than an accelerator opening threshold or not and whether the brake pedal opening is larger than a brake pedal opening threshold or not, and if the accelerator opening is larger than the accelerator opening threshold and the brake pedal opening is larger than the brake pedal opening threshold, entering launch starting control.
3. The hybrid electric vehicle launch starting control method according to claim 2, characterized in that: in step S2, if the vehicle does not have the launch start switch, the process proceeds to step S3.
4. The hybrid electric vehicle launch start control method according to claim 2, characterized in that: the launch starting control comprises the following steps:
step S4: sending an instruction to an instrument, and reminding a user that the launch start is started by the instrument to pay attention to safety;
step S5: controlling an engine to start and load torque, and entering launch starting engine starting control and launch starting wheel torque control;
step S6: and judging whether the opening degree of the brake pedal is zero within a first preset time, and if the opening degree of the brake pedal reaches zero at any time point within the first preset time, catapulting and starting the vehicle.
5. The hybrid electric vehicle launch start control method according to claim 4, characterized in that: in step S6, the first preset time is a calibrated value, and if the opening degree of the brake pedal does not reach zero within the first preset time, the catapult start and the engine start are cancelled.
6. The hybrid electric vehicle launch start control method according to claim 4, characterized in that: the launch start engine starting control comprises the following steps:
step S7: the VCU controls the engine to start, and controls the engine to run at a first engine speed after the engine finishes oil injection and ignition.
7. The hybrid electric vehicle launch starting control method according to claim 6, characterized in that: the first engine rotating speed is a calibration value and ranges from 1200rpm to 3000rpm, and the first engine rotating speed is greater than the engine rotating speed of normal starting.
8. The hybrid electric vehicle launch start control method according to claim 4, characterized in that: the control of the torque of the launch starting wheel edge comprises the following steps:
step S8: the VCU calculates the wheel-side torque demand, obtains the engine torque demand and/or the motor torque demand according to the wheel-side torque demand, and distributes the wheel-side torque demand to the engine and/or the motor.
9. The hybrid electric vehicle launch starting control method according to claim 8, characterized in that: in step S8, the vehicle control unit VCU may calculate the wheel-side torque demand according to a table look-up of the accelerator opening, or use the maximum wheel-side torque that the system can output as the wheel-side torque demand.
10. The hybrid electric vehicle launch start control method according to claim 1, characterized in that: the hybrid controller signal interaction control comprises:
the VCU of the vehicle controller can send a user reminding instruction to the instrument when the vehicle enters a launch starting state, so that the user is reminded that launch starting is started, and safety is paid attention to;
the VCU can send a motor torque demand to the PCU, and the PCU receives the motor torque demand, controls the motor to output corresponding torque according to the motor torque demand and feeds back the actual torque of the motor to the VCU;
the vehicle control unit VCU can send an engine torque demand to the engine management system EMS, the engine management system EMS receives the engine torque demand, then controls the engine to output corresponding torque according to the engine torque demand, and feeds back the actual torque of the engine to the vehicle control unit VCU.
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| CN202110170351.7A CN114940154A (en) | 2021-02-08 | 2021-02-08 | Hybrid electric vehicle launch starting control method |
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| CN202110170351.7A CN114940154A (en) | 2021-02-08 | 2021-02-08 | Hybrid electric vehicle launch starting control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116572737A (en) * | 2023-07-11 | 2023-08-11 | 广汽埃安新能源汽车股份有限公司 | Interface display method and device based on ejection starting, vehicle and storage medium |
| CN116749788A (en) * | 2023-06-27 | 2023-09-15 | 广州汽车集团股份有限公司 | Ejection control method and device, electronic equipment and storage medium |
-
2021
- 2021-02-08 CN CN202110170351.7A patent/CN114940154A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116749788A (en) * | 2023-06-27 | 2023-09-15 | 广州汽车集团股份有限公司 | Ejection control method and device, electronic equipment and storage medium |
| CN116749788B (en) * | 2023-06-27 | 2024-04-05 | 广州汽车集团股份有限公司 | Ejection control method and device, electronic equipment and storage medium |
| CN116572737A (en) * | 2023-07-11 | 2023-08-11 | 广汽埃安新能源汽车股份有限公司 | Interface display method and device based on ejection starting, vehicle and storage medium |
| CN116572737B (en) * | 2023-07-11 | 2023-09-26 | 广汽埃安新能源汽车股份有限公司 | Interface display method and device based on ejection starting, vehicle and storage medium |
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