CN114935000A - Stepless automatic gearbox control method, gearbox and automobile - Google Patents
Stepless automatic gearbox control method, gearbox and automobile Download PDFInfo
- Publication number
- CN114935000A CN114935000A CN202210470863.XA CN202210470863A CN114935000A CN 114935000 A CN114935000 A CN 114935000A CN 202210470863 A CN202210470863 A CN 202210470863A CN 114935000 A CN114935000 A CN 114935000A
- Authority
- CN
- China
- Prior art keywords
- plain
- plateau
- map
- gear shifting
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000011217 control strategy Methods 0.000 claims abstract description 26
- 230000001965 increasing effect Effects 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000009467 reduction Effects 0.000 claims description 6
- 230000001934 delay Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 3
- 230000001133 acceleration Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- XDDAORKBJWWYJS-UHFFFAOYSA-N glyphosate Chemical compound OC(=O)CNCP(O)(O)=O XDDAORKBJWWYJS-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
-
- 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
- F16H61/0204—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 for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—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 for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
-
- 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
- F16H61/0204—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 for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—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 for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
- F16H2061/0227—Shift map selection, i.e. methods for controlling selection between different shift maps, e.g. to initiate switch to a map for up-hill driving
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a control method of a stepless automatic gearbox, the gearbox and an automobile, wherein the method comprises the steps of presetting a plain working condition gear shifting control strategy in a TCU (train control unit), detecting altitude data by the TCU after the automobile is started, judging whether the environment of the automobile at the moment belongs to a plateau or a plain based on the detected altitude data, and executing the plain working condition gear shifting control strategy if the environment of the automobile belongs to the plain; if the plateau is adopted, the gearbox is controlled after parameter adjustment is carried out on the gear shifting control strategy under the plain working condition in a preset compensation mode. The invention has the advantages that: through the control of engine gear shifting rotating speed and TC delay locking on the MAP of the plain, the automobile can be quickly and simply switched into the plateau working condition and is suitable for the plateau working condition, the engine torque can be increased under the plateau environment, the power response is accelerated, the vehicle using requirements of users are met, and the dynamic property of the vehicle in the plateau driving process is ensured.
Description
Technical Field
The invention relates to the field of gearbox control, in particular to a plateau power control method and system of a stepless automatic gearbox and an automobile.
Background
When the same engine is carried with different types of automatic gearboxes, the output power performance of the same engine is different due to different structures of the automatic gearboxes. When the vehicle went, the gearbox generally can be provided with the MAP of shifting and carries out the switching of keeping off the position based on the MAP of shifting, the MAP of shifting of general demarcation is to plain environment, after the vehicle got into plateau environment, plain's the MAP of shifting will cause the power of vehicle not enough, generally can modify the MAP of shifting among the prior art, shift the displacement of point through shifting the MAP to plain, though increased the power under the plateau environment to a certain extent, but increase the time of shifting and the booming sound of engine, can not be fine satisfy the vehicle and require in the dynamic behavior under the plateau.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a control method and a control system of a stepless automatic gearbox, which can realize that a vehicle can meet the requirement of power output on plain and plateau through the gear shifting control of the gearbox.
In order to achieve the purpose, the invention adopts the technical scheme that: a control method of a stepless automatic gearbox comprises the steps that a plain working condition gear shifting control strategy is preset in a TCU, after a vehicle is started, the TCU detects altitude data and judges whether the environment of the vehicle at the moment belongs to a plateau or a plain based on the detected altitude data, and if the environment belongs to the plain, the plain working condition gear shifting control strategy is executed; if the plateau is adopted, the gearbox is controlled after parameter adjustment is carried out on the gear shifting control strategy under the plain working condition in a preset compensation mode.
The plain working condition gear shifting control strategy comprises plain gear shifting MAP and gear shifting control is carried out based on parameters of the plain gear shifting MAP.
The method for adopting the preset compensation in the plateau environment comprises the following steps: and finely adjusting the plain shift MAP to meet the power output requirement in the plateau environment.
The fine adjustment of the plain shift MAP comprises rotational speed compensation: and (4) increasing the engine speed parameter in the plain shift MAP by a compensation value, and keeping the rest parameters unchanged to form the plateau shift MAP.
The compensation value of the engine speed parameter is determined by calibrating a preset compensation value MAP, and the compensation value in the compensation value MAP is increased along with the reduction of the altitude coefficient until the compensation value reaches the maximum value and is fixed after the altitude coefficient is smaller than a set value.
The mode of adopting the default compensation under plateau environment still includes: and the TC of the hydraulic torque converter is delayed and locked, and the TCU controls the speed of the TC of the hydraulic torque converter to be delayed and locked when the TC is detected to be in a plateau environment.
In a plateau environment, an altitude coefficient is detected in a TCU, and the speed of a TC lock of the hydraulic torque converter is controlled according to an altitude system, wherein the corresponding relation is as follows: the vehicle locking speed of the hydraulic torque converter is increased along with the reduction of the altitude coefficient.
The plain shift MAP comprises a plain shift MAP and a hill shift MAP, and is used for plain shift and hill shift control in a plain environment.
A transmission for continuously variable transmission control using the continuously variable automatic transmission control method according to any one of claims 1 to 8.
An automobile comprises the gearbox or adopts the stepless automatic gearbox control method to control the stepless gearbox.
The invention has the advantages that: through the control of engine gear shifting rotating speed and TC delay locking on the MAP of the plain, the automobile can be quickly and simply switched into the plateau working condition and is suitable for the plateau working condition, the engine torque can be increased under the plateau environment, the power response is accelerated, the vehicle using requirements of users are met, and the dynamic property of the vehicle in the plateau driving process is ensured.
Drawings
The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a diagram illustrating the MAP handover control in plateau and plain areas according to the present invention.
Detailed Description
The following description of preferred embodiments of the present invention will be made in further detail with reference to the accompanying drawings.
The application that solves is vehicle gearbox control problem under the plateau environment, because of the gearbox control among the prior art generally only has plain MAP in plain area, be subject to certain one type of car sales range and quantity, many calibration work only provide a plain MAP, when this kind of vehicle gets into the plateau area, still adopt plain MAP to carry out gearbox gear shift control, can cause the circumstances such as power deficiency and roar, based on this, this application realizes through integrated control logic in gearbox controller TCU that the vehicle gets into the plateau after automatic fine setting control based on plain MAP, thereby realized that the vehicle both had been applicable to the plain and also was applicable to the plateau, reduce user complaint, improve the dynamic reliability of user experience and vehicle when the plateau goes. The specific scheme is as follows:
a control method of a stepless automatic gearbox is mainly used for controlling gear shifting of the gearbox and comprises the following control strategies: a plain working condition gear shifting control strategy is preset in the TCU, after the vehicle is started, the TCU detects altitude data and judges whether the environment of the vehicle at the moment belongs to a plateau or a plain based on the detected altitude data, and if the environment of the vehicle belongs to the plain, the plain working condition gear shifting control strategy is executed; and if the gear shifting control strategy is in the plateau, the transmission is controlled after parameter adjustment is carried out on the gear shifting control strategy under the plain working condition in a preset compensation mode.
The gear shifting control strategy under the plain working condition is a vehicle gear shifting control strategy under the plain state which is calibrated in advance, the strategy can meet the requirements of a user on vehicle power and gear shifting, each host factory can calibrate according to the actual vehicle condition, and the gear shifting control strategy suitable for the plain working condition is obtained by compensating based on the plain control strategy under the plateau condition in a preset compensation mode on the basis.
The judgement of plateau and plain in this application acquires corresponding altitude coefficient based on gathering the hardware acquisition signal, judge plain or plateau according to altitude coefficient's size, wherein the hardware that altitude coefficient corresponds includes atmospheric pressure sensor etc, correspond the altitude that converts the correspondence under the different atmospheric pressure into through gathering atmospheric pressure, and then convert into altitude correction coefficient through altitude, finally represent plain and plateau based on altitude correction coefficient, represent the height of altitude simultaneously based on altitude correction coefficient, wherein altitude correction coefficient is the plain when being more than or equal to 1, altitude correction coefficient is the plateau when being less than 1, its coefficient is littleer, corresponding plateau altitude is higher.
The control strategy for gear shifting under the plain working condition comprises plain gear shifting MAP, wherein a TCU is used as a controller of a gearbox, the controller collects basic information of a vehicle, such as real-time parameters of a brake, an accelerator, a vehicle speed and the like, and acquires corresponding gear shifting control logic through the MAP by combining data in the plain gear shifting MAP. Since the MAP is only suitable for the plain area, when the vehicle enters the plateau area, the power of the vehicle is insufficient due to the adoption of the plain MAP, and if the output power is low, the gear shifting is slow, and the booming sound is serious, the gear shifting control under the plateau environment needs to be adapted.
The method for adopting the preset compensation under the plateau environment comprises the following steps: fine adjustment is carried out on the plain shift MAP, so that the plain shift MAP meets the power output requirement under the plateau environment; meanwhile, the plateau dynamic control strategy is realized through the combined action of two modes of delaying and locking of the TC hydraulic torque converter, and the control strategy is as follows:
fine adjustment of plain MAP:
the fine adjustment of the plain shift MAP comprises rotational speed compensation: and (4) increasing the engine speed parameter in the plain shift MAP by a compensation value, and keeping the rest parameters unchanged to form the plateau shift MAP. The method mainly adjusts one engine speed parameter in the plain shift MAP, namely adding a fine adjustment value to the engine speed in the plain MAP, and keeping the other parameters unchanged to form a new MAP, wherein the MAP is the plain MAP.
In the application, the compensation value of the engine speed parameter is determined by calibrating a preset compensation value MAP in advance, and the compensation value in the compensation value MAP is increased along with the reduction of the altitude coefficient until the compensation value reaches the maximum value and is fixed after the altitude coefficient is smaller than a set value. Namely, the compensation value MAP is determined by determining the altitude coefficient, and the compensation value MAP is gradually increased and remains unchanged after the altitude coefficient is gradually decreased from 1.
Torque converter TC retard lockup:
and when the high altitude environment is detected, the TCU controls the torque converter TC to delay the locking control speed. In a plateau environment, an altitude coefficient is detected in a TCU, and the speed of a TC lock of a hydraulic torque converter is controlled according to an altitude system, wherein the corresponding relation is as follows: the vehicle locking speed of the hydraulic torque converter is increased along with the reduction of the altitude coefficient.
The plateau vehicle starts, climbs or normally runs under the influence of atmospheric pressure, the atmospheric pressure is low, the torque is attenuated, in order to ensure the dynamic performance of the vehicle in the plateau environment, the vehicle climbs, starts and Kick-down, plateau MAP is formed by compensating and revising plateau MAP, extra plateau shift MAP is used, and the dynamic performance of the whole vehicle is realized through the control of TCU. The TCU identifies the detection of the hill by the ascending and descending through identifying the altitude coefficient and the longitudinal acceleration and adopting the longitudinal acceleration, triggers the hill identification function of the TCU and carries out certain compensation on the rotating speed of the engine.
Rotating speed compensation is carried out on the shifting map used in the plateau, and further the dynamic property of the whole vehicle is ensured by increasing the rotating speed of an engine; meanwhile, delay locking control is carried out on the hydraulic torque converter TC according to the altitude coefficient of the plateau, and the locking speed of the hydraulic torque converter is increased through different altitude coefficients, so that the effect of enhancing power is achieved. Through the TC delay locking and the plateau shift MAP, the automatic operation of the vehicle in the plateau environment can be effectively realized.
In the application, the plain shift MAP comprises a flat land shift MAP and a ramp shift MAP, and is used for flat land shift and ramp shift control in a plain environment, and the plain MAP obtained based on plain MAP compensation and correction also comprises the flat land MAP and the ramp MAP, so that the shift control under different conditions in a plain environment can be better used, and the power output of the vehicle after driving into the plain can be ensured.
The stepless automatic gearbox control method is applied to the automatic gearbox to form the stepless automatic gearbox, the gearbox can realize the gear shifting control of a plain and a plateau in a control strategy mode, and the reliable output of the power performance is ensured.
The stepless automatic gearbox is applied to the automobile to form the automobile, the automobile realizes the gear shifting control of a plain and a plateau based on the gearbox or control logic, and the reliable output of the power performance is ensured.
As shown in fig. 1, the present application first forms a new plateau MAP by compensating and revising the plateau MAP, and then determines whether to execute the plateau MAP or the plateau MAP by the altitude coefficient. And judging whether the vehicle is on a slope or not based on the acquired data under the plain MAP and the plateau MAP, and controlling the vehicle through the plain MAP or the slope MAP in the plateau MAP or controlling the vehicle through the flat MAP. The judgment condition of the ramp comprises the collection and judgment of a plurality of parameters such as vehicle speed collection, longitudinal acceleration collection, inclination angle collection and the like.
The plateau dynamic control strategy of the continuously variable automatic transmission model comprises the following steps:
A. TC delay locking, plateau map and ramp map are judged before execution: the method comprises the steps that signals sent by a longitudinal acceleration sensor, an accelerator opening sensor and an atmospheric pressure sensor are received through a controller (TCU) and are comprehensively judged, and when the signals meet conditions set in the controller, gear judgment is carried out according to the signals sent by a gearbox gear sensor to judge whether D-gear conditions are met; the condition is not met, which indicates that the vehicle does not need to shift gears or the vehicle is not in a running gear and the like, and the TCU does not perform TC delay locking, plateau map and ramp map execution;
B. after the conditions are met, the vehicle needs to be shifted, the altitude coefficient is judged in the method, the TCU selects the state that the TC locking MAP and the plateau MAP preset value need to be executed according to the current altitude coefficient is less than 1, and TC _ MAP and shift _ MAP intervention is carried out, wherein TC _ MAP is the corresponding relation between the delay locking vehicle speed and the coefficient, and shift _ MAP is the relation between the altitude coefficient and the engine shifting rotating speed; the TC _ map and the shift _ map change along with the change of the altitude coefficient, but the request value is fixed after the altitude coefficient is minimum and is not increased; and then performing gear shifting control according to the determined plateau MAP and the delay TC.
C. And when the TCU receives signals sent by the longitudinal acceleration sensor, the vehicle speed sensor and the accelerator pedal sensor, the comprehensive judgment is carried out, and the ramp map is executed. Compared with the prior art, the invention has the advantages that the intervention of the engine speed and the TC locking map is carried out in advance when the vehicle is in the plateau working condition, and the intervention value is preset according to different working conditions, so that the dynamic property of the vehicle in the plateau environment running is ensured.
In the plateau working condition, the delay locking request of the hydraulic torque converter is controlled by identifying the plateau altitude coefficient, the longitudinal acceleration, the vehicle speed and the engine torque in the starting and climbing processes of the vehicle, so that the torque of the engine is increased when the vehicle runs on a road surface at the high altitude and the climbing, and the power response is accelerated.
It is clear that the specific implementation of the invention is not restricted to the above-described embodiments, but that various insubstantial modifications of the inventive process concept and technical solutions are within the scope of protection of the invention.
Claims (10)
1. A control method of a stepless automatic gearbox is characterized by comprising the following steps: the method comprises the steps that a plain working condition gear shifting control strategy is preset in a TCU, after a vehicle is started, the TCU detects altitude data and judges whether the environment of the vehicle at the moment belongs to a plateau or a plain based on the detected altitude data, and if the environment of the vehicle belongs to the plain, the plain working condition gear shifting control strategy is executed; and if the gear shifting control strategy is in the plateau, the transmission is controlled after parameter adjustment is carried out on the gear shifting control strategy under the plain working condition in a preset compensation mode.
2. The control method of the continuously variable automatic transmission according to claim 1, characterized in that: the plain working condition gear shifting control strategy comprises plain gear shifting MAP, and gear shifting control is carried out based on parameters of the plain gear shifting MAP.
3. A control method of a continuously variable automatic transmission as claimed in claim 1 or 2, characterized in that: the method for adopting the preset compensation under the plateau environment comprises the following steps: and finely adjusting the plain shift MAP to meet the power output requirement in the plateau environment.
4. A control method of a continuously variable automatic transmission as claimed in claim 3, characterized in that: the fine tuning of the plain shift MAP includes speed compensation: and (4) increasing the engine speed parameter in the plain shift MAP by a compensation value, and keeping the rest parameters unchanged to form the plateau shift MAP.
5. The control method of the continuously variable automatic transmission according to claim 4, characterized in that: the compensation value of the engine speed parameter is determined by calibrating a preset compensation value MAP, and the compensation value in the compensation value MAP is increased along with the reduction of the altitude coefficient until the compensation value reaches the maximum value and is fixed after the altitude coefficient is smaller than a set value.
6. A control method of a continuously variable automatic transmission as claimed in claim 1 or 2, characterized in that: the method for adopting the preset compensation in the plateau environment further comprises the following steps: and the torque converter TC delays locking, and the TCU controls the torque converter TC to delay locking to control the speed of the vehicle when the torque converter TC is detected to be in a plateau environment.
7. The control method of the continuously variable automatic transmission according to claim 6, characterized in that: in a plateau environment, an altitude coefficient is detected in a TCU, and the speed of a TC lock of a hydraulic torque converter is controlled according to an altitude system, wherein the corresponding relation is as follows: the vehicle locking speed of the hydraulic torque converter is increased along with the reduction of the altitude coefficient.
8. A control method of a continuously variable automatic transmission as claimed in claim 1 or 2, characterized in that: the plain shift MAP comprises a plain shift MAP and a hill shift MAP, and is used for plain shift and hill shift control in a plain environment.
9. A transmission, characterized by: the gearbox adopts the control method of the continuously variable automatic gearbox as claimed in any one of claims 1 to 8 to control the continuously variable gearbox.
10. An automobile, characterized in that: the automobile comprises the transmission according to claim 9 or is controlled by a continuously variable transmission according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210470863.XA CN114935000A (en) | 2022-04-28 | 2022-04-28 | Stepless automatic gearbox control method, gearbox and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210470863.XA CN114935000A (en) | 2022-04-28 | 2022-04-28 | Stepless automatic gearbox control method, gearbox and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114935000A true CN114935000A (en) | 2022-08-23 |
Family
ID=82861535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210470863.XA Pending CN114935000A (en) | 2022-04-28 | 2022-04-28 | Stepless automatic gearbox control method, gearbox and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114935000A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011149524A (en) * | 2010-01-22 | 2011-08-04 | Honda Motor Co Ltd | Control device of automatic transmission |
| CN102518794A (en) * | 2011-12-30 | 2012-06-27 | 山推工程机械股份有限公司 | Method and device for shift control of engineering mechanical trucks |
| CN108150638A (en) * | 2017-12-27 | 2018-06-12 | 北奔重型汽车集团有限公司 | A kind of hydraulic automatic speed variator shift control method |
| CN112283338A (en) * | 2020-10-29 | 2021-01-29 | 南京汽车集团有限公司 | Plateau gear shifting rotating speed correction strategy for AMT gearbox |
| CN113775747A (en) * | 2021-08-13 | 2021-12-10 | 江铃汽车股份有限公司 | Static correction gear shifting control method after working condition identification |
-
2022
- 2022-04-28 CN CN202210470863.XA patent/CN114935000A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011149524A (en) * | 2010-01-22 | 2011-08-04 | Honda Motor Co Ltd | Control device of automatic transmission |
| CN102518794A (en) * | 2011-12-30 | 2012-06-27 | 山推工程机械股份有限公司 | Method and device for shift control of engineering mechanical trucks |
| CN108150638A (en) * | 2017-12-27 | 2018-06-12 | 北奔重型汽车集团有限公司 | A kind of hydraulic automatic speed variator shift control method |
| CN112283338A (en) * | 2020-10-29 | 2021-01-29 | 南京汽车集团有限公司 | Plateau gear shifting rotating speed correction strategy for AMT gearbox |
| CN113775747A (en) * | 2021-08-13 | 2021-12-10 | 江铃汽车股份有限公司 | Static correction gear shifting control method after working condition identification |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8165766B2 (en) | Method for controlling a drivetrain of a vehicle, with a drive motor and a gearbox | |
| US8690730B2 (en) | Method for improving shift quality in an automatic transmission | |
| US5738605A (en) | Anti-hunt strategy for an automatic transmission | |
| US8738258B2 (en) | Shift hunting control of a hybrid electric vehicle | |
| JPH0570753B2 (en) | ||
| US7993243B2 (en) | Detecting operation of a vehicle on an ascending grade | |
| US7841962B2 (en) | Automatic transmission upshift timing | |
| KR100373026B1 (en) | Transmission control system and method thereof | |
| US20080085815A1 (en) | Method For Adapting An Operating Mode Of An Automatic Variable Speed Transmission | |
| US7537544B2 (en) | Control device for vehicle | |
| US11034355B2 (en) | Powertrain control method for vehicle | |
| CN113551032A (en) | Power upshift torque compensation control method for dual-clutch automatic transmission | |
| US6295498B1 (en) | Dynamic load compensation method for an automatic transmission shift pattern | |
| EP1070882A1 (en) | Adaptive anti-hunt logic for automated transmission downshift control | |
| US20040143383A1 (en) | Method for controlling and/or adjusting a torque transmission system in the drive chain of a vehicle | |
| KR100534797B1 (en) | Method of controlling shift of an automatic transmission for vehicles | |
| CN114935000A (en) | Stepless automatic gearbox control method, gearbox and automobile | |
| CN114370499B (en) | Automatic gearbox vehicle type downshift control method | |
| CN115217962A (en) | Engine torque compensation control method and system in gear shifting torque interaction stage | |
| US7473208B2 (en) | Shift control device of automatic transmission | |
| US8180538B2 (en) | Adapting stroke pressure of a transmission control element | |
| KR100448769B1 (en) | Shift pattern control method for an engine torque down of automatic transmission | |
| JP3003757B2 (en) | Vehicle driving force control device | |
| CN113511207A (en) | Whole vehicle engine transient control method and vehicle | |
| US6450920B1 (en) | Method of controlling upshift for an automatic transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240425 Address after: 241000 No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui, China Applicant after: CHERY AUTOMOBILE Co.,Ltd. Country or region after: China Address before: 241000 Building 8, science and Technology Industrial Park, 717 Zhongshan South Road, Yijiang District, Wuhu City, Anhui Province Applicant before: Chery Commercial Vehicles (Anhui) Co., Ltd. Country or region before: China |