In-gear control method, device and system for synchronizer

Abstract

The invention provides an in-gear control method, device and system for a synchronizer. The method includes the steps that the position of a synchronizer combination sleeve is detected, and whether the synchronizer is put into gear or not is judged; when the synchronizer is put into gear, whether a gear shifting fork is located within a preset stop bandwidth in a combination gear ring or not is detected, wherein the bandwidth center of the stop bandwidth is located between the tail end of the combination gear ring and an out-of-gear boundary, a preset safety distance is kept between the bandwidth center of the stop bandwidth and the out-of-gear boundary, and the boundary of the stop bandwidth is located between the tail end of the combination gear ring and the out-of-gear boundary; when the gear shifting fork is located beyond the stop bandwidth, the gear shifting fork is driven to be corrected in position; and when the gear shifting fork is located within the stop bandwidth and the stay time is longer than the preset time, driving on the gear shifting fork is stopped. By means of the in-gear control method, device and system for the synchronizer, a gear shifting structure of the synchronizer can be simplified, the weight of a gearbox system can be lowered, and meanwhile in-gear maintaining reliability is improved.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to a synchronizer in-gear control method, device and system. Background technique [0002] At present, for a mechanical gearbox that relies on a synchronizer to shift gears, the position of the synchronizer is kept in gear mainly through a mechanical mechanism. The mechanical way of maintaining the gear of the automatic transmission is basically the same as that of the traditional gear box. The gear is locked mainly through two methods. The chamfering of the teeth outside the ring gear prevents the gear from being out of gear; the second is to lock the gear through the mechanical part such as the locking ball that is rigidly connected with the synchronizer sleeve on the shift fork. However, the mechanical locking mechanism in the above-mentioned second method is very cumbersome, which not only increases the weight of the gearbox, but also increases the risk of syst...

AI Technical Summary

Problems solved by technology

However, the mechanical locking mechanism in the above-mentioned second method is very cumbersome, which not only increases the weight of the gearbox, but also increases the risk of system reliability

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