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

Method used

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

Examples

Experimental program
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Example Embodiment

[0018] Example 1

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

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

[0021] The driving state information includes, but is not limited to: vehicle speed, accelerator signal, and brake signal, and is preferably collected through 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 shift to the target gear. At the same time, the gear failed counter and the limp trigger counter respectively record the number of failed gear and the batch of failed gear in a single batch. The specific steps include:

[0024] Step 2.1) Engage the current target gear. When the target gear is successfully engaged, return to step 1; otherwise, add 1 to the count of t...

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PUM

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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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