CN110985668B - Control method for forbidding engine to recover oil supply in gear shifting process - Google Patents
Control method for forbidding engine to recover oil supply in gear shifting process Download PDFInfo
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- CN110985668B CN110985668B CN201911421901.7A CN201911421901A CN110985668B CN 110985668 B CN110985668 B CN 110985668B CN 201911421901 A CN201911421901 A CN 201911421901A CN 110985668 B CN110985668 B CN 110985668B
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- Prior art keywords
- gear shifting
- oil
- tcu
- oil supply
- recovery
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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
- F16H63/40—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
- F16H63/50—Signals to an engine or motor
- F16H63/502—Signals to an engine or motor for smoothing gear shifts
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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
- F16H2061/0075—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 a particular control method
- F16H2061/0087—Adaptive control, e.g. the control parameters adapted by learning
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a control method for forbidding an engine to recover oil supply in a gear shifting process, wherein a TCU receives a gear shifting starting signal, the TCU receives an oil-cut recovery signal, the TCU sends an oil supply forbidding recovery request to an engine controller, the engine controller sends an oil supply forbidding instruction (namely an oil supply forbidding high flag bit) after receiving the oil supply forbidding recovery request to prevent oil-cut recovery, the TCU detects whether an oil-cut recovery signal exists, if so, the TCU finishes gear shifting, otherwise, the TCU continuously sends the oil supply forbidding recovery request to the engine controller, the occurrence of the oil-cut recovery working condition of a vehicle in the gear shifting process is eliminated, the wrong self-learning of oil filling is avoided, the project development time is shortened, the project expense is saved, the problems of short gear shifting time and gear shifting impact caused by the oil-cut recovery of the engine are avoided, the driving comfort is improved, and.
Description
Technical Field
The invention belongs to the technical field of automatic transmission control, and particularly relates to a control method for prohibiting an engine from recovering oil supply in a gear shifting process.
Background
When the vehicle is in the gear shifting process, when the rotating speed of the lowest gear shifting point is lower than the calibrated engine oil-cut recovery rotating speed, oil supply recovery can occur to the engine, gear shifting impact can be generated under the condition, error self-learning is caused, gear shifting quality is influenced, and great trouble is caused to calibration work.
When the vehicle is in the gear shifting process, as shown in fig. 1, when the rotating speed of the engine is lower than a certain value, the engine can recover oil supply, the gear shifting time can be shortened, self-learning can be influenced by the increase of the oil filling amount, error learning can be generated, the torque recovery can also influence the lifting torque of gear shifting, the gear shifting is impacted, and the gear shifting quality is poor.
There is no solution to this problem in vehicles equipped with automatic transmissions.
Disclosure of Invention
The invention aims to solve the technical problem of providing a control method for forbidding an engine to recover oil supply in the gear shifting process, overcoming the defects of the existing control method.
In order to solve the technical problems, the technical scheme of the invention is as follows: a control method for prohibiting engine fueling recovery during a gear shift, comprising the steps of: step 101, the TCU receives a gear shifting starting signal and enters step 102;
102, the TCU receives a fuel cut recovery signal and then enters a step 103;
103, the TCU sends a request for recovering the fuel supply prohibition to an engine controller, and then the step 104 is carried out;
104, after receiving the request for forbidding oil supply recovery, the engine controller sends an instruction for forbidding oil supply recovery (namely forbidding oil supply high flag bit) to prevent oil cut recovery, and then enters step 105;
105, the TCU detects whether an oil-cut return signal exists, if yes, the step 106 is carried out, otherwise, the step 103 is carried out, and the TCU continues to send an oil supply prohibition recovery request to the engine controller;
and step 106, ending until the gear shifting is completed.
By adopting the technical scheme, compared with the prior art, the invention has the following advantages: the occurrence of the oil-break recovery working condition of the vehicle in the gear shifting process is eliminated, the error self-learning of oil filling is avoided, the project development time is shortened, and the project expenditure is saved.
The problem of shift time short, the impact of shifting that the engine fuel cut resumes to cause is avoided, improves driving comfort, reduces customer complains about.
Drawings
FIG. 1 is a logic timing diagram for restoring fuel during a shift in a current automatic transmission;
FIG. 2 is a logic timing diagram illustrating the absence of oil supply resumption during a shift event in an embodiment of the present invention;
FIG. 3 is a logic timing diagram of a flag bit in an embodiment of the present invention;
FIG. 4 is a flow chart illustrating operation of the automatic transmission during a shift event without oil recovery in accordance with an embodiment of the present invention.
Detailed Description
In order to more clearly understand the technical features, objects and effects of the present invention, the embodiments of the present invention will be described with reference to the accompanying drawings, and it will be understood by those skilled in the art that the following should not be construed as limiting the scope of the present invention.
Embodiment, as shown in fig. 2, 3 and 4, a control method for prohibiting engine oil supply recovery during a gear shifting process includes the following steps:
102, the TCU receives a fuel cut recovery signal and then enters a step 103;
103, the TCU sends a request for recovering the fuel supply prohibition to an engine controller, and then the step 104 is carried out;
104, after receiving the request for forbidding oil supply recovery, the engine controller sends an instruction for forbidding oil supply recovery (namely forbidding oil supply high flag bit) to prevent oil cut recovery, and then enters step 105;
105, the TCU detects whether an oil-cut return signal exists, if yes, the step 106 is carried out, otherwise, the step 103 is carried out, and the TCU continues to send an oil supply prohibition recovery request to the engine controller;
and step 106, ending until the gear shifting is completed.
The foregoing is illustrative of the best mode of the invention and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The scope of the present invention is defined by the appended claims, and any equivalent modifications based on the technical teaching of the present invention are also within the scope of the present invention.
Claims (1)
1. A control method for prohibiting engine fueling recovery during a gear shift, comprising the steps of: step 101, the TCU receives a gear shifting starting signal and enters step 102;
102, the TCU receives a fuel cut recovery signal and then enters a step 103;
103, the TCU sends a request for recovering the fuel supply prohibition to an engine controller, and then the step 104 is carried out;
104, after receiving the request of forbidding oil supply recovery, the engine controller sends out a command of forbidding oil supply high flag bit recovery to prevent oil cut recovery, and then the step 105 is carried out;
105, the TCU detects whether an oil-cut return signal exists, if yes, the step 106 is carried out, otherwise, the step 103 is carried out, and the TCU continues to send an oil supply prohibition recovery request to the engine controller;
and step 106, ending until the gear shifting is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911421901.7A CN110985668B (en) | 2019-12-31 | 2019-12-31 | Control method for forbidding engine to recover oil supply in gear shifting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911421901.7A CN110985668B (en) | 2019-12-31 | 2019-12-31 | Control method for forbidding engine to recover oil supply in gear shifting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110985668A CN110985668A (en) | 2020-04-10 |
| CN110985668B true CN110985668B (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911421901.7A Active CN110985668B (en) | 2019-12-31 | 2019-12-31 | Control method for forbidding engine to recover oil supply in gear shifting process |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458704B (en) * | 2021-12-15 | 2024-04-16 | 潍柴动力股份有限公司 | Clutch control method, clutch control apparatus, and computer-readable storage medium |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1832487B1 (en) * | 2006-03-07 | 2012-08-08 | Nissan Motor Company Limited | Power Train Control |
| JP4722171B2 (en) * | 2008-09-04 | 2011-07-13 | ジヤトコ株式会社 | Vehicle control device |
| CN102529948B (en) * | 2010-12-31 | 2015-06-17 | 上海汽车集团股份有限公司 | Fuel cut sliding gear-shifting control method of hybrid power vehicle |
| CN102556045B (en) * | 2010-12-31 | 2015-04-15 | 上海汽车集团股份有限公司 | Fuel cut sliding shift control method for hybrid vehicle |
| CN104421025B (en) * | 2013-09-11 | 2017-11-24 | 上海汽车集团股份有限公司 | Hybrid vehicle DECEL ENLEAN control method |
| CN104455393B (en) * | 2014-11-27 | 2017-02-22 | 长城汽车股份有限公司 | Control method and device for relieving violent vibration of car |
| CN105134393B (en) * | 2015-08-31 | 2017-11-07 | 上汽通用汽车有限公司 | A kind of automatic transmission vehicle DECEL ENLEAN control method and system |
| CN105221730B (en) * | 2015-10-28 | 2017-04-19 | 上海汽车集团股份有限公司 | Low gear downshift control method of mechanical automatic transmission |
| CN105584484B (en) * | 2016-01-16 | 2017-11-03 | 吉林大学 | The rotating speed energy-saving control method of engine in a kind of loading machine AMT gearshift procedures |
| JP6833387B2 (en) * | 2016-07-29 | 2021-02-24 | ダイハツ工業株式会社 | Vehicle control device |
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- 2019-12-31 CN CN201911421901.7A patent/CN110985668B/en active Active
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| CN110985668A (en) | 2020-04-10 |
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