CN113734174A - Method for operating an electronic gear control system, motor vehicle - Google Patents
Method for operating an electronic gear control system, motor vehicle Download PDFInfo
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- CN113734174A CN113734174A CN202010459325.1A CN202010459325A CN113734174A CN 113734174 A CN113734174 A CN 113734174A CN 202010459325 A CN202010459325 A CN 202010459325A CN 113734174 A CN113734174 A CN 113734174A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000007704 transition Effects 0.000 claims abstract description 10
- 230000007935 neutral effect Effects 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims 1
- 230000009471 action Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009118 appropriate response Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Classifications
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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
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
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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
- B60W30/182—Selecting between different operative modes, e.g. comfort and performance modes
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
-
- 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
- F16H61/02—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 characterised by the signals used
- F16H61/0202—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 characterised by the signals used the signals being electric
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/48—Signals to a parking brake or parking lock; Control of parking locks or brakes being part of the transmission
-
- 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
- B60W2510/186—Status of parking brakes
-
- 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
-
- 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
-
- 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
- B60W2540/06—Ignition switch
Abstract
The invention relates to a method for operating an electronic gear control system of a motor vehicle, an electronic gear control system and a motor vehicle. The method comprises the following steps: receiving an input signal; calculating a target mode of the electronic gear control system according to the received input signal; checking whether a feasibility condition is satisfied based on the target mode; if the feasibility condition is judged to be met, outputting the target mode to the execution equipment; if the feasibility condition is not met, a transition is made to a safe mode or the current state is maintained.
Description
Technical Field
The invention relates to a method for operating an electronic gear control system of a motor vehicle, an electronic gear control system and a motor vehicle.
Background
Patent document CN110645347A discloses an electronic shift device including: the device comprises a main body assembly, a function switch assembly and a knob assembly; the functional switch assembly is assembled in the main body assembly, and the knob assembly is matched with the functional switch assembly; the knob assembly is used for forming parking action through pressing or forming gear shifting action through rotating, and the function switch assembly is used for correspondingly generating parking signals or gear shifting signals according to the parking action or the gear shifting action and sending the parking signals or the gear shifting signals to corresponding executing mechanisms so as to finish parking operation or gear shifting operation.
Patent document CN110341676A discloses a built-in electronic parking control system for an automatic transmission and a control method thereof, wherein the control system includes a valve body including a first valve body cavity and a second valve body cavity, a parking auxiliary valve core, a spring and an end plug which are matched with the first valve body cavity to form at least one sealing section, a parking valve core which is matched with the second valve body cavity to form at least one sealing section, a parking switch valve, a parking locking electromagnetic valve including a clamping jaw, an oil supply cavity and an oil path; the oil supply cavity comprises a switch valve oil supply cavity, a clutch oil cavity and a main oil way oil cavity; the valve core diameter of the first sealing surface on the left side of the parking auxiliary valve core is smaller than that of the second sealing surface.
Patent document CN110307330A discloses an electronic shifter, which includes a shift base, a shift operating device, a position sensor and a shifter MCU; the gear shifting control device is clamped with the gear shifting seat and comprises a gear shifting rod and a gear shifting handle, one end of the gear shifting rod is clamped with the gear shifting seat, the other end of the gear shifting rod is rotatably connected with the gear shifting handle, and the gear shifting handle can turn around the gear shifting rod to realize mode switching; the position sensor is arranged on the gear shifting operating device and can sense the position of the gear shifting handle and convert the position into an electric signal to be output; the gear shifter MCU is electrically connected with the position sensor and can receive the electric signal and transmit the electric signal to the whole vehicle controller to complete mode switching.
Patent document CN105620281A discloses an electronic gear system and a method, the system includes an electronic gear device, a gear controller, an electronic parking lock system, and a vehicle control unit, wherein: the parking system comprises a parking motor and a position sensor, wherein the position sensor detects the rotating state and the position of a driving shaft of the parking mechanism and determines the current state of the parking system in real time according to the rotating state and the position, and when the locking gear signal is determined to be effective or the gear controller receives a power-off requirement sent by the whole vehicle controller and the current state of the electronic parking system meets a preset automatic locking condition, the gear controller generates a gear instruction corresponding to the locking signal to drive the parking motor to operate so as to realize the locking of a driving wheel shaft of a vehicle.
According to the technical scheme, the appropriate target driving gear is determined by a software strategy based on the original action of a driver and the current state of the vehicle, and when the first logic has an error, the second logic cuts off the first logic and calculates the safety gear. Since this strategy introduces the ISO26262 strategy, the hardware also needs to meet the relevant ASIL level, which is not only costly, but also difficult to adapt to different application scenarios.
Disclosure of Invention
The present invention is directed to a method for operating an electronic gear control system of a motor vehicle, which is capable of improving the safety and reliability of electronic gear control.
The invention relates to a method for operating an electronic gear control system of a motor vehicle, comprising the following steps:
receiving an input signal;
calculating a target mode of the electronic gear control system according to the received input signal;
checking whether a feasibility condition is satisfied based on the target mode;
if the feasibility condition is judged to be met, outputting the target mode to the execution equipment; if the feasibility condition is not met, a transition is made to a safe mode or the current state is maintained.
Therefore, the determined target gear mode is further checked, and the reliability of the target gear mode is improved. And the operation safety of the electronic gear control system is improved through the introduction of the safety mode, so that the overall safety of the vehicle is improved.
According to a preferred embodiment, the input signal comprises one or more of the following: a fault signal, a shift lever position signal, a parking brake status signal, a vehicle speed signal, a powertrain status signal, a vehicle door status signal, a connection status signal of a high voltage battery charger and/or a refueling device, an ignition key status signal, and a driver input signal.
According to a preferred embodiment, the check of the feasibility condition comprises one or more of the following:
determining whether a gear or a state related to the target mode is available;
checking the feasibility of the target mode in consideration of the vehicle speed;
checking the feasibility of the target mode taking into account the state of the power system;
checking the feasibility of the target mode in consideration of the state of the door;
checking the feasibility of the target mode in consideration of the connection state of the high-voltage battery charger and/or the refueling device;
the feasibility of the target mode is checked taking into account the status of the ignition key.
According to a preferred embodiment, in the safety mode, neutral or park is requested and/or relevant information is sent to the driver or other vehicle systems.
According to a preferred embodiment, the relevant information comprises one or more of the following: warning, fault, operational cue.
According to a preferred embodiment, if the driver-side door is open, or the ignition key is closed, or the engine is stopped, a transition is made to a safe state in which a neutral request is output if the vehicle speed is above a threshold value and a parking request is output if the vehicle speed is below the threshold value.
According to a preferred embodiment, certain signals are allowed to be masked.
The invention also relates to an electronic gear control system comprising a signal receiving module, a main control module and a signal output module, the electronic gear control system being configured to perform the method according to the invention.
The invention also relates to a motor vehicle comprising an electronic gear control system according to the invention.
Drawings
Fig. 1 is a block diagram of an electronic gear control system of a motor vehicle according to the present invention.
Fig. 2 is a flow chart of a method according to the invention.
Detailed Description
The method, the electronic gear control system and the motor vehicle according to the invention will be described in the following by means of specific embodiments with reference to the accompanying drawings. The exemplary embodiments, however, may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Fig. 1 shows an electronic gear control system of a motor vehicle according to the invention. The electronic gear control system comprises a signal receiving module 1, a main control module 2 and a signal output module 3. The signal receiving module 1 receives input from a shift lever, input regarding a parking brake state, a vehicle state signal, and input from a driver. The main control module 2 calculates and selects a target mode of the electronic gear control system, such as a parking mode, a reverse gear mode, a neutral gear mode, an automatic mode or a manual mode, according to the received input signals. The signal output module 3 outputs the selected target mode to an execution system such as a transmission, a parking brake, and the like.
For example, the selector lever can be embodied as an electronic selector lever and transmit a trigger signal to the signal reception module 1. For example, the shift handle is of a monostable design, which always returns to a central position after being operated. There are two stops in the forward direction (toward the front of the vehicle) and two stops in the rearward direction (toward the rear of the vehicle). Pressing the shift lever towards the second stop in either direction results almost always in the same way as pressing the shift lever twice towards the first stop. The only exception to this rule is the transition between automatic and manual, where the shift handle must be returned to a center position and movement to a single rearward stop results in switching between manual and automatic modes.
The state of the parking brake is monitored and a signal indicating whether the parking brake is engaged or not is transmitted to the signal receiving module 1. Similarly, vehicle state signals such as vehicle speed, powertrain state, door state, charger/charger state, ignition key state, and the like are also transmitted to the signal receiving module 1.
In the following, the method according to the invention is described with reference to fig. 2. The method may be performed in the master control module 2.
First, an input signal is received in step S01. The input signal may include: a fault signal, a shift lever position signal, a parking brake status signal, a vehicle speed signal, a powertrain status signal, a vehicle door status signal, a connection status signal of a high voltage battery charger and/or a refueling device, an ignition key status signal, and a driver input signal.
Here, the fault signal may include hardware related faults such as, but not limited to, faults in controller area network communications, controller area network messages, SCU and SBWM feedback. Due to the consideration of the fault signal, the most appropriate response to the fault situation can be made. Additionally, the reaction to each fault can be calibrated.
Then, in step S02, a target mode of the electronic shift control system is calculated and obtained according to the received input signal.
In step S03, it is checked whether the feasibility condition is satisfied, i.e., whether the target mode is feasible, based on the target mode.
The examination of the feasibility condition includes: it is determined whether the gear or state involved in the target mode is available. This feasibility condition is not met if the gear or state concerned is not available. In this case, a logical flag may be generated to prevent selection of the appropriate mode (i.e., maintaining the current state), or to request neutral (i.e., transition to safe mode) when the current mode is not available.
The checking of the feasibility condition includes checking the feasibility of the target mode in consideration of the vehicle speed. For example, if the vehicle reverse speed is excessively high and the target mode is the forward travel mode, it is determined that the feasibility condition is not satisfied. In this case, it is possible to go to the safe mode and request neutral. And if the vehicle forward speed is excessively high and the target mode is the reverse mode, it is determined that the feasibility condition is not satisfied. In this case, it is possible to go to the safe mode and request neutral.
The checking of the feasibility condition includes checking the feasibility of the target mode in consideration of the state of the powertrain system. Therefore, it is possible to determine whether the target mode is applicable or not according to the power system state. For example, if the engine is not running and the start-stop system is not active, park or neutral should be requested.
The checking of the feasibility condition includes checking the feasibility of the target mode in consideration of the state of the vehicle door. If the door is open and the vehicle speed is below a threshold, only the park mode is possible. If the vehicle speed is above the threshold and the doors are open, then only neutral mode is possible. The neutral mode is not possible if the doors are open and the vehicle speed is above a second threshold.
The checking of the feasibility condition includes checking the feasibility of the target mode in consideration of the connection state of the high-voltage battery charger/charger. If the high-voltage battery charger/refuelling device is connected, the feasibility condition can be checked taking into account the vehicle door status and/or the vehicle speed. E.g., the high voltage battery charger/refuelling device is connected and the vehicle door is open and/or the vehicle speed is below a threshold, then it is determined that only the park mode is possible.
The checking of the feasibility condition includes checking the feasibility of the target mode in consideration of the state of the ignition key. For example, if the ignition key is turned off or pulled out, only the parking mode is possible.
If it is determined in step S03 that the feasibility condition is satisfied, that is, the target mode is feasible, it goes to step S04 and outputs the target mode to the execution apparatus. Whereas if it is determined in step S03 that the feasibility condition is not satisfied, i.e., the target mode is not feasible, it goes to step S05 and transitions to the safe mode or maintains the current state.
In the safe mode, neutral or park is requested and/or relevant information is sent to the driver or other vehicle systems. The related information includes, for example: warnings, faults, operational cues, etc.
For example, the following message may be displayed to the driver to indicate a disabled transition:
-a brake application requesting gear engagement;
-pressing an unlock key to request a gear;
-a deceleration request for backing up;
-deceleration request driving;
-starting the engine in gear.
For example, the following warnings may be displayed to the driver:
-the parking brake fails to engage;
-the parking brake fails to disengage;
-shift lever failure;
-parking brake failure.
In a preferred embodiment, if the driver-side door is open, or the ignition key is off, or the engine is stopped, a transition is made to a safe state in which a neutral request is output if the vehicle speed is above a threshold value and a parking request is output if the vehicle speed is below the threshold value.
In a preferred embodiment, in order to avoid the influence of local faults (in particular signal faults) on the operation of the system, provision can be made for specific signals to be masked at specific driver inputs. For example, in the prior art, if the vehicle speed is below a threshold and the driver side door is open, a park or neutral mode is requested, for example, for 1 second. After 1 second the driver may request remote control or driving of the car. In this case, if the door switch is faulty (e.g., always indicates that the door is open), the vehicle will again be required to stop or maintain neutral every time the vehicle speed decreases. This causes a great trouble to the driving of the driver. According to the invention, however, such a fault signal can be temporarily masked at a specific driver input or by other means, so that the influence of the fault signal is avoided. Thus, even if the door switch outputs an erroneous signal, the vehicle is not parked (request P at rest or request N at movement).
Other embodiments of the present invention will readily suggest themselves to such skilled persons having the benefit of this disclosure. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Claims (9)
1. A method for operating an electronic gear control system of a motor vehicle, the method comprising the steps of:
receiving an input signal (S01);
calculating a target mode of the electronic gear control system according to the received input signal (S02);
it is characterized in that the preparation method is characterized in that,
checking whether a feasibility condition is satisfied based on the target pattern (S03);
if the feasibility condition is judged to be met, outputting the target mode to the execution equipment; if the feasibility condition is not met, a transition is made to a safe mode or the current state is maintained.
2. The method of claim 1, wherein the input signal comprises one or more of: a fault signal, a shift lever position signal, a parking brake status signal, a vehicle speed signal, a powertrain status signal, a vehicle door status signal, a connection status signal of a high voltage battery charger and/or a refueling device, an ignition key status signal, and a driver input signal.
3. The method of claim 1, wherein the checking for feasibility conditions comprises one or more of:
determining whether a gear or a state related to the target mode is available;
checking the feasibility of the target mode in consideration of the vehicle speed;
checking the feasibility of the target mode taking into account the state of the power system;
checking the feasibility of the target mode in consideration of the state of the door;
checking the feasibility of the target mode in consideration of the connection state of the high-voltage battery charger and/or the refueling device;
the feasibility of the target mode is checked taking into account the status of the ignition key.
4. Method according to claim 1, characterized in that in safe mode neutral or park is requested and/or relevant information is sent to the driver or other vehicle systems.
5. The method of claim 4, wherein the related information comprises one or more of: warning, fault, operational cue.
6. The method according to claim 1, characterized in that if the driver side door is open, or the ignition key is off, or the engine is shut down, a transition is made to a safe state in which a neutral request is output in case the vehicle speed is above a threshold value and a parking request is output in case the vehicle speed is below the threshold value.
7. The method of claim 1, wherein certain signals are allowed to be masked.
8. An electronic gear control system comprising a signal receiving module (01), a main control module (02) and a signal output module (03), the electronic gear control system being configured to perform the method according to any one of claims 1 to 7.
9. A motor vehicle comprising an electronic gear control system according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010459325.1A CN113734174A (en) | 2020-05-27 | 2020-05-27 | Method for operating an electronic gear control system, motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010459325.1A CN113734174A (en) | 2020-05-27 | 2020-05-27 | Method for operating an electronic gear control system, motor vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN113734174A true CN113734174A (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010459325.1A Pending CN113734174A (en) | 2020-05-27 | 2020-05-27 | Method for operating an electronic gear control system, motor vehicle |
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| CN (1) | CN113734174A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024006943A1 (en) * | 2022-07-01 | 2024-01-04 | Tesla, Inc. | Dynamically determining vehicle pitch |
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| US20130073163A1 (en) * | 2010-08-13 | 2013-03-21 | Wuhu Bethel Automative Safety Systems Co., Ltd. | Electronic parking brake system, assistant starting method thereof for motor vehicle |
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| CN105952889A (en) * | 2016-06-28 | 2016-09-21 | 广州汽车集团股份有限公司 | Gear switching signal acquisition device, method thereof, automobile gear-shifting system and automobile |
| CN106515720A (en) * | 2017-01-03 | 2017-03-22 | 重庆长安汽车股份有限公司 | Self-resetting gear system and control method |
| CN107676475A (en) * | 2017-08-24 | 2018-02-09 | 宝沃汽车（中国）有限公司 | shift control method, device and vehicle |
-
2020
- 2020-05-27 CN CN202010459325.1A patent/CN113734174A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130073163A1 (en) * | 2010-08-13 | 2013-03-21 | Wuhu Bethel Automative Safety Systems Co., Ltd. | Electronic parking brake system, assistant starting method thereof for motor vehicle |
| CN103322179A (en) * | 2012-03-23 | 2013-09-25 | 富士重工业株式会社 | Shift-by-wire control system |
| CN104924986A (en) * | 2015-07-06 | 2015-09-23 | 安徽江淮汽车股份有限公司 | Gear shifting reminding method of hybrid electric vehicle |
| CN105952889A (en) * | 2016-06-28 | 2016-09-21 | 广州汽车集团股份有限公司 | Gear switching signal acquisition device, method thereof, automobile gear-shifting system and automobile |
| CN106515720A (en) * | 2017-01-03 | 2017-03-22 | 重庆长安汽车股份有限公司 | Self-resetting gear system and control method |
| CN107676475A (en) * | 2017-08-24 | 2018-02-09 | 宝沃汽车（中国）有限公司 | shift control method, device and vehicle |
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