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Control method of transmission reverse gear lock position learning function

A technology of learning function and control method, which is applied in the direction of transmission control, components with teeth, belt/chain/gear, etc., and can solve the problem of differences in the position of the reverse gear lock of the transmission, assembly errors of the transmission assembly, mechanical manufacturing and electrical There are problems such as errors to achieve the effect of improving accuracy

Active Publication Date: 2019-11-22
CHONGQING TSINGSHAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the mechanical manufacturing and electrical errors of the AMT mechanical automatic transmission, and the assembly error of the transmission assembly, the position of the reverse lock of the transmission of each vehicle is different, so it is necessary to reconfirm the actual position of the reverse lock of the AMT system transmission of each vehicle. position, thereby ensuring vehicle safety and transmission reliability

Method used

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  • Control method of transmission reverse gear lock position learning function
  • Control method of transmission reverse gear lock position learning function
  • Control method of transmission reverse gear lock position learning function

Examples

Experimental program
Comparison scheme
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specific Embodiment 1

[0038] see Figure 1 to Figure 4 As shown, a control method for a transmission reverse lock position learning function, comprising the following steps:

[0039] Step 1), start the transmission reverse lock position learning function, use the vehicle off-line equipment or fault diagnosis instrument to send the transmission reverse lock position learning command to the transmission control unit TCU, the transmission control unit TCU receives the transmission control unit or fault diagnosis instrument sent Start the transmission reverse lock position learning instruction and start the transmission reverse lock position learning program. Further, before starting the transmission reverse lock position learning, the vehicle key is powered on, the handbrake is pulled, and the engine is not started. The neutral N position ensures that the transmission does not transmit power, which is safer.

[0040] Step 2), judging whether the learning conditions for the reverse lock position of th...

specific Embodiment 2

[0053] see Figure 5 As shown, the feature of this embodiment is: before the gear selection actuator moves to the 12-position neutral gear of the transmission, the clutch is disengaged, and it is judged whether the clutch is disengaged successfully. If the clutch disengagement is successful, the gear selection actuator is executed to move to the transmission 12 If the clutch position sensor value reaches the set separation range within the specified time and keeps for a period of time, if the value of the clutch position sensor reaches the set separation range within the specified time If it stays within the set disengagement range for a period of time, the clutch disengages successfully. The prescribed time is 2 to 5 seconds, which is to consider the clutch separation execution time from the perspective of protecting the clutch and the clutch execution motor. If the clutch separation execution time is too long, the clutch motor may overheat and may burn the clutch motor. The...

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PUM

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Abstract

The invention discloses a control method for a position learning function of a reverse gear lock of a transmission. The control method for the position learning function of the reverse gear lock of the transmission comprises the following steps: starting the position learning function of the reverse gear lock of the transmission at first; judging whether a position learning condition of the reverse gear lock of the transmission is met or not; if the condition is met, carrying out clutch separation, enabling a gear selecting and shifting executing mechanism to move to neutral gears at a position 1 and a position 2 of the transmission, enabling the gear selecting and shifting executing mechanism to move to a 5R position selecting track of the transmission, and enabling the gear selecting andshifting executing mechanism to engage a gear 5 of the transmission; enabling the gear selecting and shifting executing mechanism to slowly move to a reverse gear direction from the gear 5 of the transmission; recording a sensor value of a current gear shifting position to obtain an original value Px of the position of the reverse gear lock of the transmission; updating the actual position P of the reverse gear lock of the transmission; and storing the actual position P of the reverse gear lock of the transmission into a non-volatile memory. The actual position of the reverse gear lock of thetransmission of the current vehicle is obtained, it can be ensured that safe margin is reserved, impact to the reverse gear lock of the transmission is relieved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of automotive electronic control, in particular to a control method for a transmission reverse gear lock position learning function. Background technique [0002] On the basis of the original manual transmission, AMT is equipped with a selector shift actuator and a clutch actuator to replace the human-operated clutch pedal and selector shift handle. When the vehicle is running at high speed, if the driver mistakenly shifts the 5th gear to the reverse gear, the transmission will be damaged and the safety of the driver and passengers will be endangered. In order to prevent this situation, a reverse gear lock is installed on the manual transmission. Although AMT is TCU (Transmission Control Unit, that is, automatic transmission control unit, which is often used in AMT, AT, DCT, CVT and other automatic transmissions to realize automatic transmission control and make driving easier) automatic control, it prevents the vehic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/18
CPCF16H61/18F16H2061/185
Inventor 邓涛斯红路舒玉春王丁刘德财谭章麒刘天信方世杰赵涛
Owner CHONGQING TSINGSHAN IND