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Safety control method of double-clutch transmission gear-engagement failures

A dual-clutch transmission, safety control technology, applied in transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as driving inconvenience, achieve the effect of avoiding operation and ensuring safe driving

Active Publication Date: 2015-12-16
SHANGHAI AUTOMOBILE GEAR WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology only locks or unlocks the R or D gear through the comparator and timer according to the vehicle speed threshold. Once the driver makes a wrong operation, the R or D gear will be locked, which will cause inconvenience to driving.

Method used

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  • Safety control method of double-clutch transmission gear-engagement failures

Examples

Experimental program
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Embodiment 1

[0019] Such as figure 1 As shown, this embodiment includes the following steps:

[0020] Step 1. Under the normal driving condition of the vehicle, judge the driving intention by monitoring the driving state information in real time, that is, the target gear.

[0021] Said driving state information includes but not limited to: vehicle speed, accelerator signal and brake signal, preferably collected by TCU.

[0022] The target gear is obtained by searching the shift map through the driving state information.

[0023] Step 2. When the target gear changes, control the clutch to engage in gear to reach the target gear. At the same time, the gear failure counter and the limp trigger counter record the number of failures in a single batch and the batches of failures in a single batch. times, the specific steps include:

[0024] Step 2.1) For the current target gear, when the target gear is successfully engaged, then return to step 1; otherwise, the number of counts in the target ...

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Abstract

The invention relates to a safety control method of double-clutch transmission gear-engagement failures, which comprises the following steps: judging the driving intent by monitoring the running state information in time, monitoring the change of the target gear in time, and counting the number of gear-engagement failures for the same target gear; and when the gear-engagement failure judgment condition is satisfied, entering the limp working condition and reporting the failures. The method can accurately judge the gear-engagement condition to ensure the safe driving of the vehicle, and can avoid the unnecessary operations caused by misjudgment.

Description

technical field [0001] The invention relates to a technology in the field of dual-clutch transmission control, in particular to a safety control method for the failure of the dual-clutch transmission to engage in gear. Background technique [0002] The dual-clutch transmission combines the high efficiency of the manual transmission with the smooth and comfortable shifting features of the automatic transmission. During the acceleration process, the power will not be interrupted, making the acceleration of the vehicle more powerful and smooth. At the same time, it can reduce fuel consumption, shorten the shift time, and improve driving. performance. However, since the dual-clutch transmission adopts an electronic control unit with high precision, it is difficult to maintain and the maintenance cost is expensive. The use of a large number of electronic components and the compact and complex mechanical structure also increase the probability of its failure. Especially in high-...

Claims

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Application Information

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IPC IPC(8): F16H61/12F16H61/18
CPCF16H61/12F16H61/18F16H2061/1216F16H2061/1224F16H2061/1276
Inventor 董志军李欢讯华富根任飞多
Owner SHANGHAI AUTOMOBILE GEAR WORKS
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