CN117227736A - Torque control method for power-to-unpowered upshift - Google Patents
Torque control method for power-to-unpowered upshift Download PDFInfo
- Publication number
- CN117227736A CN117227736A CN202311223600.XA CN202311223600A CN117227736A CN 117227736 A CN117227736 A CN 117227736A CN 202311223600 A CN202311223600 A CN 202311223600A CN 117227736 A CN117227736 A CN 117227736A
- Authority
- CN
- China
- Prior art keywords
- torque
- rotating speed
- speed
- power
- upshift
- 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 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims abstract description 14
- 238000005381 potential energy Methods 0.000 claims abstract description 6
- 230000009467 reduction Effects 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000036461 convulsion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a torque control method for power-to-unpowered upshift, which comprises the following steps: 1. when torque increasing medium is used, when power conversion is carried out, torque judgment is carried out at the first time, and whether power conversion is carried out in the upshift process is judged according to the change rate of the torque and the minimum torque point; 2. if power conversion occurs, judging whether torque increase is needed according to the progress of gear shifting; 3. according to the rotating speed when the power rotation and the unpowered upshift occur, the specific torque increasing time is judged, the higher the rotating speed is, the earlier the torque increasing is in intervention in the speed regulating stage, the torque increasing counteracts a part of the self anti-supporting torque of the engine, the potential energy of the self anti-supporting torque due to the reduction of the rotating speed is reduced, so that the turbine can timely lift the rotating speed at the end of the rotating speed, and the setbacks are eliminated. According to the speed ratio change time, the torque increasing intervention reduces the self-rotation speed falling trend of the engine, prolongs the speed ratio change time, ensures that the speed ratio shift time is more than 0.4s, and ensures that the subjective feeling of gear shift is more gentle.
Description
Technical Field
The invention relates to a torque control method, in particular to a torque control method for power-to-unpowered upshift.
Background
Currently, automatic transmissions are rapidly developed in China, and the control technology of AT transmissions is mature, but most AT transmissions are applied to the field of gasoline engines and are rarely applied to the field of diesel engines. The diesel engine has poorer response than the gasoline engine in terms of torque control, has slower response under certain working conditions requiring quick response of the torque, and requires tcu to intervene in advance to send a torque request. If power conversion (on-off) occurs during upshift and gear shifting, tcu is required to send a torque increasing request to ensure gear shifting smoothness.
Disclosure of Invention
The invention aims to provide a torque control method for power-on and power-off upshift, which is characterized in that on-off occurs in the upshift process, a torque increasing request is sent out by tcu at the middle and final stages of rotation speed change, and an engine responds to torque increase to offset the falling trend of rotation speed.
The invention aims at realizing the following technical scheme:
a torque control method for a power-on-power upshift, comprising the steps of:
the first step: torque judgment is carried out at the first time, and whether power conversion occurs in the upshift process is judged according to the change rate of the torque and the minimum torque point;
and a second step of: if no power conversion occurs, the control is performed according to normal gear shifting logic, and torque reduction control is performed in a speed regulation stage: if power conversion occurs, judging whether torque multiplication is needed according to the progress of gear shifting, wherein: the power-conversion unpowered upshift is required to increase torque before the speed regulation stage is completed, and the torque is not required to be increased after the speed regulation stage is completed; the speed regulation stage is a stage in which the speed ratio of gears changes in the gear shifting process;
and a third step of: the torque is increased, the specific torque increasing time is judged according to the rotating speed when the power rotation and the unpowered upshift occur, the higher the rotating speed is, the earlier the torque increasing is inserted in the speed regulating stage, the torque is increased to offset a part of the anti-supporting torque of the engine, the potential energy of the engine due to the decrease of the rotating speed is reduced, so that the turbine can timely lift the rotating speed at the end of the rotating speed, and the setbacks are eliminated.
Compared with the prior art, the invention has the following advantages:
when no torque increase is needed, in the speed ratio change stage of gear shifting, potential energy of the engine and the rotation speed of the turbine are simultaneously dropped due to the fact that starting is in an oil cut-off state, the rotation speed change time is short and is about 0.2s, the rotation speed of the engine cannot be pulled up in time at the end of the rotation speed change, and the phenomenon of drop of the rotation speed and the feeling of pause are caused; when the torque increasing medium is available, the torque increasing medium is used for reducing the self-rotation speed dropping trend of the engine according to the speed ratio change time, prolonging the speed ratio change time, enabling the speed ratio shift time to be more than 0.4s and enabling the subjective feeling of gear shift to be more gentle.
Drawings
FIG. 1 is a schematic diagram of an on-off upshift torque control scheme of the present invention.
Detailed Description
The following description of the present invention is provided with reference to the accompanying drawings, but is not limited to the following description, and any modifications or equivalent substitutions of the present invention should be included in the scope of the present invention without departing from the spirit and scope of the present invention.
As shown in fig. 1, the control manner of the on-off upshift is as follows:
when no torque is increased and medium is inserted, in the speed ratio change stage of gear shifting, potential energy of the engine and the turbine speed are simultaneously dropped due to the fact that the engine is in an oil-cut state at the moment of starting, the engine speed cannot be pulled up in time at the end of speed change, and the phenomenon of speed drop is caused, so that the engine is in a jerk.
When torque increase medium exists, when power conversion is generated, the following three steps of treatment are carried out:
the first step: the torque determination is made at the first time, and whether or not power conversion has occurred during upshift is determined based on the rate of change of torque and the minimum torque point.
And a second step of: if no power conversion occurs, the control is performed according to normal gear shifting logic, and torque reduction control is performed in a speed regulation stage: if power conversion occurs, judging whether torque increase is needed according to the progress of gear shifting, and if the power conversion and unpowered upshift occurs before the speed regulation stage is completed, the torque increase is needed, and if the speed regulation stage is completed, the torque increase is not needed.
And a third step of: the torque is increased, the specific torque increasing time is judged according to the rotating speed when the power rotation and the unpowered upshift occur, the higher the rotating speed is, the earlier the torque increasing is inserted in the speed regulating stage, the torque is increased to offset a part of the self anti-supporting torque of the engine, the potential energy of the self anti-supporting torque due to the reduction of the rotating speed is reduced, so that the turbine can timely lift the rotating speed at the end of the rotating speed, and the setbacks are eliminated.
Claims (1)
1. A torque control method for a power-on-power upshift, the method comprising the steps of:
the first step: judging the torque, and judging whether power conversion occurs in the upshift process according to the change rate of the torque and the minimum torque point;
and a second step of: if no power conversion occurs, the control is performed according to normal gear shifting logic, and torque reduction control is performed in a speed regulation stage: if power conversion occurs, judging whether torque multiplication is needed according to the progress of gear shifting, wherein: the power-conversion unpowered upshift is required to increase torque before the speed regulation stage is completed, and the torque is not required to be increased after the speed regulation stage is completed;
and a third step of: according to the rotating speed when the power rotation and the unpowered upshift occur, the specific torque increasing time is judged, the higher the rotating speed is, the earlier the torque increasing is in intervention in the speed regulating stage, the torque increasing counteracts a part of the self anti-supporting torque of the engine, the potential energy of the self anti-supporting torque due to the reduction of the rotating speed is reduced, so that the turbine can timely lift the rotating speed at the end of the rotating speed, and the setbacks are eliminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311223600.XA CN117227736A (en) | 2023-09-21 | 2023-09-21 | Torque control method for power-to-unpowered upshift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311223600.XA CN117227736A (en) | 2023-09-21 | 2023-09-21 | Torque control method for power-to-unpowered upshift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117227736A true CN117227736A (en) | 2023-12-15 |
Family
ID=89094443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311223600.XA Pending CN117227736A (en) | 2023-09-21 | 2023-09-21 | Torque control method for power-to-unpowered upshift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117227736A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003184594A (en) * | 2001-12-18 | 2003-07-03 | Mitsubishi Motors Corp | Integrated control apparatus for engine and automatic transmission |
| JP2004125106A (en) * | 2002-10-04 | 2004-04-22 | Daihatsu Motor Co Ltd | Speed change control method of automatic transmission |
| JP2018123876A (en) * | 2017-01-31 | 2018-08-09 | ジヤトコ株式会社 | Control device of automatic transmission |
| CN110848381A (en) * | 2019-10-12 | 2020-02-28 | 中国第一汽车股份有限公司 | Gear-up control method, double-clutch automatic transmission and vehicle |
| CN114655189A (en) * | 2021-05-20 | 2022-06-24 | 长城汽车股份有限公司 | Hybrid vehicle, and coasting upshift control method, apparatus and storage medium thereof |
| CN115046003A (en) * | 2022-05-27 | 2022-09-13 | 中国第一汽车股份有限公司 | Shift method and shift device for traveling vehicle, target vehicle, and storage medium |
-
2023
- 2023-09-21 CN CN202311223600.XA patent/CN117227736A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003184594A (en) * | 2001-12-18 | 2003-07-03 | Mitsubishi Motors Corp | Integrated control apparatus for engine and automatic transmission |
| JP2004125106A (en) * | 2002-10-04 | 2004-04-22 | Daihatsu Motor Co Ltd | Speed change control method of automatic transmission |
| JP2018123876A (en) * | 2017-01-31 | 2018-08-09 | ジヤトコ株式会社 | Control device of automatic transmission |
| CN110848381A (en) * | 2019-10-12 | 2020-02-28 | 中国第一汽车股份有限公司 | Gear-up control method, double-clutch automatic transmission and vehicle |
| CN114655189A (en) * | 2021-05-20 | 2022-06-24 | 长城汽车股份有限公司 | Hybrid vehicle, and coasting upshift control method, apparatus and storage medium thereof |
| CN115046003A (en) * | 2022-05-27 | 2022-09-13 | 中国第一汽车股份有限公司 | Shift method and shift device for traveling vehicle, target vehicle, and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5190720B2 (en) | Vehicle control device | |
| CN111536229B (en) | Gear-up control method for AT automatic transmission | |
| CN103765052B (en) | Automatic transmission slide downshift control device | |
| CN101535686B (en) | Control apparatus and control method for vehicle mounted with automatic transmission | |
| CN110925417A (en) | Auxiliary control method for torque reduction in unpowered upshift process of P2 hybrid power transmission | |
| US8548701B2 (en) | Control device and control method for continuously variable transmission | |
| CN102313005B (en) | Control device | |
| JP2011214673A (en) | Vehicle transmission apparatus | |
| JP2015117738A (en) | Vehicle control device | |
| CN114233842B (en) | Method and system for controlling high-speed reversing process of loader | |
| CN110230691B (en) | Vehicle and gear shifting control method and system of electronic clutch | |
| CN102310852B (en) | Gear shifting control method for automobile double-clutch power coupling synchronizer and device thereof | |
| CN111536230A (en) | Static gear shifting control method of automatic gearbox | |
| CN106364478A (en) | Automatic transmission gear shifting amendment control method for improving vehicle emergency braking performance | |
| JP2001180336A (en) | Engine throttle control system for improved shifting | |
| EP1507678B1 (en) | Procedure for upshifting gear in a motor vehicle and a power plant unit for a motor vehicle | |
| CN106931157B (en) | A kind of double-clutch speed changer shift control method for avoiding dual-clutch gear-shifting power cycle | |
| CN117227736A (en) | Torque control method for power-to-unpowered upshift | |
| CN113847423B (en) | Starting control method and system for hydraulic torque converter | |
| US6637203B2 (en) | Method and arrangement for regulating crankshaft rotational speed | |
| CN105584484B (en) | The rotating speed energy-saving control method of engine in a kind of loading machine AMT gearshift procedures | |
| CN109711050A (en) | A kind of field calibration method of automatic transmission | |
| CN112303224A (en) | Method and system for controlling lock-up clutch of automatic transmission with hydraulic torque converter | |
| CN107191588B (en) | Consider the big-powered tractor power upshift control method of diesel engine speed regulation characteristic | |
| CN107664207B (en) | Vehicle control device and vehicle control method |
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 |