CN112849116A - Gear recognition control system and control method suitable for new energy commercial vehicle - Google Patents
Gear recognition control system and control method suitable for new energy commercial vehicle Download PDFInfo
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- CN112849116A CN112849116A CN202011620445.1A CN202011620445A CN112849116A CN 112849116 A CN112849116 A CN 112849116A CN 202011620445 A CN202011620445 A CN 202011620445A CN 112849116 A CN112849116 A CN 112849116A
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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
- B60W10/08—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
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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
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/18—Preventing unintentional or unsafe shift, e.g. preventing manual shift from highest gear to reverse gear
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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
- B60W2050/143—Alarm 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1005—Transmission ratio engaged
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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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/18—Braking system
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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
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/06—Direction of travel
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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
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal 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
- B60W2710/10—Change speed gearings
- B60W2710/1005—Transmission ratio engaged
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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
- Y02T10/72—Electric energy management in electromobility
Abstract
A gear recognition control system and a control method suitable for a new energy commercial vehicle relate to the field of new energy commercial vehicles and solve the problem that no perfect processing method exists for the misoperation of a driver at present. The VCU control logic range includes conditions for setting a shift from D to N, R to N, N hold, N to D, R to D, D hold, D to R and N to R.
Description
Technical Field
The invention relates to the field of new energy commercial vehicles, in particular to a gear identification control method suitable for a new energy commercial vehicle. The invention relates to a control method for recognizing and outputting a logical gear of a whole vehicle according to control logic by a vehicle controller receiving a physical gear sent by a gear shifting controller when a driver consciously or mistakenly operates a gear shifting mechanism in a parking state or driving.
Background
In the field of new energy commercial vehicles, compared with traditional vehicles, pure electric vehicles do not have corresponding mechanical structures to ensure that a motor is smoothly and smoothly switched between positive rotation and negative rotation, so that a gear identification control strategy is particularly important; most of the existing gear shifting strategies are not perfect in processing mode aiming at misoperation of a driver and aiming at the intention of the driver as much as possible.
In the development process of the vehicle control unit of the new energy commercial vehicle, in order to ensure the driving safety and the comfort of a passenger when the vehicle control unit responds and outputs a logical gear when a driver operates a physical gear, the invention provides a gear identification control method suitable for the new energy commercial vehicle aiming at the problems in the prior art.
Disclosure of Invention
The invention provides a gear identification control system and a gear identification control method suitable for a new energy commercial vehicle, aiming at solving the problem that the conventional vehicle gear shifting method has no perfect processing method aiming at the misoperation of a driver.
A gear recognition control system suitable for a new energy commercial vehicle comprises a gear controller, a vehicle arrangement control system, a motor control system and an instrument; the gear controller, the whole vehicle control system, the motor control system and the instrument perform signal interaction through a CAN bus and a hard wire;
and after receiving the physical gear request signal sent by the gear controller, the whole vehicle control system judges and outputs the logic gear state at the next moment according to the current logic gear state, the vehicle speed signal, the brake pedal signal and the vehicle running direction signal, and sends the logic gear state at the next moment to the electronic control unit and the combination instrument for display.
A gear identification control method suitable for a new energy commercial vehicle is realized by the following steps:
when the control system is powered on, a gear module judgment module of the VCU is defaulted to enter an invalid state, the logic gear output is invalid, and when an effective gear sent by a gear controller is received for the first time, the effective gear is used as the logic gear output;
the VCU control logic gear comprises setting conditions for a shift from D gear to N gear, a shift from R gear to N gear, a state holding condition from N gear, a shift from N gear to D gear, a shift from R gear to D gear, a state holding condition from D gear, a shift from D gear to R gear, and a shift from N gear to R gear;
the process of shifting from the gear D to the gear N is as follows: setting the current logic gear as a gear D;
1) the gear controller sends a physical gear request to be N gear, the Duration of the physical gear request is more than Duration _ Time, the vehicle speed is less than a calibrated value V _ H, and the logic gear outputs the N gear to other controllers;
2) the gear controller sends a physical gear request to be R gear and keeps the Duration Time to be more than Duration _ Time, a calibration value V _ L < vehicle speed < (equal to the calibration value V _ H), a logic gear outputs N gear to other controllers, and simultaneously the gear is switched to give an alarm: the combination meter displays high speed gear not to be switched;
3) the gear controller sends a physical gear request to be R gear and keeps the Duration Time to be more than Duration _ Time, the vehicle speed is equal to a calibrated value V _ L and the brake pedal is not stepped on, the logic gear outputs N gear to other controllers, and simultaneously the gear is switched to give an alarm: please shift gear and brake.
The invention has the beneficial effects that: the invention discloses a gear identification control method applicable to a new energy commercial vehicle, which comprises the following steps: after receiving a physical gear request signal sent by the SCU, a vehicle control system (VCU) judges and outputs a logical gear state at the next moment according to the current logical gear state, a vehicle speed signal, a brake pedal signal and a vehicle running direction, sends the logical gear state to an MCU (microprogrammed control Unit) execution and combination instrument for displaying, and sends a gear switching alarm signal to an IC (integrated Circuit) to prompt a driver of a gear shifting failure reason.
Drawings
Fig. 1 is a schematic diagram of signal interaction of a gear controller (SCU), a vehicle control system (VCU), a Motor Controller (MCU), a combination Instrument (IC), and a brake pedal through a CAN bus and a hard line in the gear identification control method for a new energy commercial vehicle according to the present invention.
Detailed Description
The embodiment is described with reference to fig. 1, a gear identification control method suitable for a new energy commercial vehicle,
in consideration of factors such as vehicle load, vehicle speed limit and brake force, the gear identification control method takes the factors including misoperation of gears by a driver or a non-driver, gear shifting requests during vehicle standing and driving, vehicle speed during gear shifting, whether brake is effective during gear shifting and the like into consideration, after the VCU identifies a logic gear, the VCU sends the logic gear signal to other Electronic Control Units (ECU) through a CAN signal, and sends the logic gear state and the alarm state to an IC (integrated circuit) to prompt the driver.
In the embodiment, the system for identifying and controlling the gears of the new energy commercial vehicle is further provided, and comprises a gear controller, a VCU, an MCU and an IC; the SCU, the VCU, the MCU and the IC carry out signal interaction through the CAN bus and the hard wire;
after receiving the physical gear request signal sent by the SCU, the VCU judges and outputs the logical gear state at the next moment according to the current logical gear state, the vehicle speed signal, the brake pedal signal and the vehicle running direction signal, and sends the logical gear state at the next moment to the ECU and the IC for display.
In the present embodiment, the physical gear is a gear issued by the SCU, and represents the driver's intention to shift gears;
logical gear (actual gear): the logic gear is a gear output by the VCU after gear identification strategy is carried out according to the current driving state;
the motor stalling state: the motor stalling state is that the rotating speed of the motor is between certain positive and negative limit values (-20rpm to +20 rpm);
the motor positively rotates: the rotating speed of the motor is more than or equal to +20 rpm;
the motor is in a reverse rotation state: the rotating speed of the motor is less than or equal to-20 rpm;
the advancing direction is as follows: if the motor rotating speed value is a positive value, the vehicle running direction is indicated to be a forward direction;
the reversing direction is as follows: if the rotating speed value of the motor is a negative value, the driving direction of the vehicle is indicated to be a reverse direction.
In this embodiment, the Duration _ Time: and real vehicle calibration parameters are determined according to specific real vehicle conditions, 1-10 message periods can be selected, the gear shifting requirements are met, and no gear shifting delay feeling is needed.
A gear identification control method suitable for a new energy commercial vehicle is realized by the following steps:
1. after power is supplied, the SCU is defaulted to enter an invalid state, the logic gear output is invalid, and when the valid gear sent by the SCU is received for the first time, the gear is directly output as the logic gear.
Transfer from D gear to N gear
The current logic gear is gear D:
1) the physical gear request is N gear and keeps more than Duration _ Time, the vehicle speed is less than V _ H, and the logic gear outputs N gear.
2) The physical gear request is R gear and keeps more than Duration _ Time, V _ L < vehicle speed < ═ V _ H, the logic gear outputs N gear, and the gear switching alarms: and the high speed does not shift gears.
3) The physical gear request is R gear and keeps more than Duration _ Time, the vehicle speed is V _ L and the brake is not pressed down, the logic gear outputs N gear, and the gear switching alarm is carried out at the same Time: please shift gear and brake.
Transfer from R gear to N gear
The current logic gear is R gear:
1) the physical gear request is N gear and keeps more than Duration _ Time, and the logic gear outputs N gear.
2) The physical gear request is D gear and keeps more than Duration _ Time, the vehicle speed is V _ L and the brake is not pressed down, the logic gear outputs N gear, and the gear is switched to alarm: please shift gear and brake.
N-gear state retention
The current logic gear is N gear:
1) the physical gear request is R gear and keeps more than Duration _ Time, the vehicle speed is greater than V _ L, the logic gear outputs N gear, and simultaneously the gear is switched to alarm: and the high speed does not shift gears.
2) The physical gear request is R gear and keeps more than Duration _ Time, the vehicle speed is V _ L and the brake is not pressed down, the logic gear outputs N gear, and the gear switching alarm is carried out at the same Time: please shift gear and brake.
3) The physical gear request is D gear and keeps more than Duration _ Time, the vehicle speed is V _ L and the brake is not pressed down, the logic gear outputs N gear, and the gear is switched to alarm: please shift gear and brake.
Shift from N gear to D gear
The current logic gear is N gear:
1) the VCU detects that the physical gear request is D gear and keeps more than Duration _ Time, the vehicle speed is V _ L and the brake pedal is pressed down, and outputs a logic gear as D gear;
2) the VCU detects that the physical gear request is D gear and keeps more than Duration _ Time, the vehicle speed is greater than V _ L, and the logical gear output is D gear;
transfer from R gear to D gear
The current logic gear state is R gear:
1) the VCU detects that the physical gear request is D gear and keeps more than Duration _ Time, the vehicle speed is V _ L and the brake pedal is pressed down, and the logic gear outputs D gear;
2) the VCU detects that the physical gear request is D gear and keeps more than Duration _ Time, the vehicle speed is greater than V _ L, and the logical gear output is D gear;
d-gear state retention
The current logic gear state is D gear, and when speed of a motor vehicle > ═ V _ H, if the physical gear request is N gear or R gear, then logic gear keeps D gear, and the gear switches the warning simultaneously: and the high speed does not shift gears.
Transfer from D gear to R gear
The current logic gear state is D gear:
the physical gear request is R gear and keeps more than Duration _ Time, the vehicle speed is less than V _ L, the brake pedal is pressed down, and the logic gear outputs R gear;
shift from N gear to R gear
The current logic gear state is N gear:
the physical gear request is R gear and keeps more than Duration _ Time, the vehicle speed is less than V _ L, the brake pedal is pressed down, and the logic gear outputs R gear;
the SCU sends a physical gear request, a logical gear identified by the VCU, and an output condition of an alarm signal, which is specifically shown in table 1.
Table 1 logical gear determination strategy list:
the technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The utility model provides a keep off position discernment control system suitable for new forms of energy commercial car which characterized by: the system comprises a gear controller, a vehicle control system, a motor control system and an instrument; the gear controller, the whole vehicle control system, the motor control system and the instrument perform signal interaction through a CAN bus and a hard wire;
and after receiving the physical gear request signal sent by the gear controller, the whole vehicle control system judges and outputs the logic gear state at the next moment according to the current logic gear state, the vehicle speed signal, the brake pedal signal and the vehicle running direction signal, and sends the logic gear state at the next moment to the electronic control unit and the combination instrument for display.
2. The control method of the gear identification control system suitable for the new energy commercial vehicle as claimed in claim 1, is characterized in that: the method comprises the following specific processes:
when the control system is powered on, a gear module judgment module of the VCU is defaulted to enter an invalid state, the logic gear output is invalid, and when an effective gear sent by a gear controller is received for the first time, the effective gear is used as the logic gear output;
the VCU control logic gear comprises setting conditions for a shift from D gear to N gear, a shift from R gear to N gear, a state holding condition from N gear, a shift from N gear to D gear, a shift from R gear to D gear, a state holding condition from D gear, a shift from D gear to R gear, and a shift from N gear to R gear;
the process of shifting from the gear D to the gear N is as follows: setting the current logic gear as a gear D;
1) the gear controller sends a physical gear request to be N gear, the Duration of the physical gear request is more than Duration _ Time, the vehicle speed is less than a calibrated value V _ H, and the logic gear outputs the N gear to other controllers;
2) the gear controller sends a physical gear request to be R gear and keeps the Duration Time to be more than Duration _ Time, a calibration value V _ L < vehicle speed < (equal to the calibration value V _ H), a logic gear outputs N gear to other controllers, and simultaneously the gear is switched to give an alarm: the combination meter displays high speed gear not to be switched;
3) the gear controller sends a physical gear request to be R gear and keeps the Duration Time to be more than Duration _ Time, the vehicle speed is equal to a calibrated value V _ L and the brake pedal is not stepped on, the logic gear outputs N gear to other controllers, and simultaneously the gear is switched to give an alarm: please shift gear and brake.
3. The control method according to claim 2, characterized in that: conditions for shift from R range to N range: the current logic gear is an R gear;
1) and the gear controller sends a physical gear request to be N gear and keeps the Duration of the physical gear request to be more than Duration _ Time, and the logic gear outputs the N gear.
2) The gear controller sends a physical gear request to be a D gear and keeps the Duration Time to be more than Duration _ Time, the vehicle speed < (equal to a calibration value V _ L) and a brake pedal is not stepped on, a logic gear outputs an N gear, and simultaneously the gear is switched to give an alarm: please shift gear and brake.
4. The control method according to claim 2, characterized in that: the N-gear state maintaining condition is as follows: the current logic gear is N gear;
1) the gear controller sends a physical gear request to be R gear, keeps the Duration Time to be more than Duration _ Time, and outputs N gear through logic gear, and simultaneously, the gear controller switches and gives an alarm: and the high speed does not shift gears.
2) The gear controller sends a physical gear request to be R gear and keeps the Duration Time to be more than Duration _ Time, the vehicle speed < is a calibration value V _ L and the brake is not stepped on, the logic gear outputs N gear, and simultaneously the gear is switched to give an alarm: please shift gear and brake.
3) The gear controller sends a physical gear request to be a D gear and keeps the Duration Time to be more than Duration _ Time, the vehicle speed < (equal to a calibration value V _ L) is not braked, a logic gear outputs an N gear, and simultaneously the gear is switched to give an alarm: please shift gear and brake.
5. The control method according to claim 2, characterized in that: the conditions for shifting from the N gear to the D gear are as follows: setting the current logic gear as N gear;
1) when the VCU detects that the physical gear request is D gear and the Duration is more than Duration _ Time, the speed is equal to a calibrated value V _ L, a brake pedal is stepped on, and the output logic gear is D gear;
2) when the VCU detects that the physical gear request is D gear and the Duration is more than Duration _ Time, the speed is greater than a calibration value V _ L, and the logical gear output is D gear.
6. The control method according to claim 2, characterized in that: the conditions for shifting from the R gear to the D gear are as follows: setting the current logic gear state as an R gear;
1) when the VCU detects that the physical gear request is D gear and the Duration is more than Duration _ Time, the speed is less than a calibrated value V _ L and a brake pedal is stepped on, and the logic gear outputs D gear;
2) when the VCU detects that the physical gear request is D gear and the Duration is more than Duration _ Time, the speed is greater than a calibration value V _ L, and the logical gear output is D gear.
7. The control method according to claim 2, characterized in that: the conditions for maintaining the D-range state are: the current logic gear state is D gear, and when speed of a motor vehicle > ═ V _ H, if the physical gear request is N gear or R gear, then logic gear keeps D gear, and the gear switches the warning simultaneously: and the high speed does not shift gears.
8. The control method according to claim 2, characterized in that: the conditions for shifting from the D gear to the R gear are as follows: the current logic gear state is a D gear;
and the gear controller sends a physical gear request to be R gear, the Duration of the physical gear request is more than Duration _ Time, the vehicle speed is less than a calibrated value V _ L, a brake pedal is pressed down, and the logic gear outputs the R gear.
9. The control method according to claim 2, characterized in that: the conditions for shifting from the N gear to the R gear are as follows: the current logic gear state is N gear;
and the gear controller sends a physical gear request to be R gear, the Duration of the physical gear request is more than Duration _ Time, the vehicle speed is less than a calibrated value V _ L, a brake pedal is pressed down, and the logic gear outputs the R gear.
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| CN113983161A (en) * | 2021-10-27 | 2022-01-28 | 江西五十铃汽车有限公司 | Range-extending type light-truck gear protection strategy device |
| CN113983161B (en) * | 2021-10-27 | 2023-10-20 | 江西五十铃汽车有限公司 | Range-extending type light-truck gear protection strategy device |
| WO2023131292A1 (en) * | 2022-01-07 | 2023-07-13 | 长城汽车股份有限公司 | Control method and apparatus for transmission of new energy vehicle, vehicle, and storage medium |
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| CN112849116B (en) | 2022-05-20 |
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