Method for controlling manual gear shift of automatic transmission

A technology of automatic transmission and control method, applied in the direction of transmission control, elements with teeth, belt/chain/gear, etc., can solve the problems of not considering the driver, engine damage, damage to the engine, etc., to avoid engine damage The effect of the accident

Inactive Publication Date: 2011-07-06
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly solves the problem that the manual shift control method of the automatic transmission in the prior art does not take into account the driver's technical limitations and whether the driver's shift timing is correct, and once the driver make

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  • Method for controlling manual gear shift of automatic transmission
  • Method for controlling manual gear shift of automatic transmission

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Embodiment Construction

[0010] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

[0011] Such as figure 1 As shown, the automatic transmission on the car is usually set with multiple gears, which are parking gear (P gear), reverse gear (R gear), driving gear (D gear), and now some automatic transmissions are equipped with manual gear (M gear). gear), and there are up and down gears (+ gear) and down gears (- gear) in the upper and lower positions of the manual gear, which are used to raise or lower the current gear of the gearbox. When the shift lever is dialed into the M position, the manual shift mode is activated, and when the shift lever is turned out of the M position, the manual shift mode is exited.

[0012] Due to the different driving skills of each driver, if the timing of the driver's downshift is inappropriate in the manual shift mode, that is to say, downshifting at an...

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Abstract

The invention discloses a method for controlling manual gear shift of an automatic transmission. The method is characterized in that according to the performances of an engine, the maximum rotation speed valve of the engine of each shift, to which the transmission can be reduced, is restricted; when down shift is carried out by a driver, if the current rotation speed of the engine is too high, when the transmission reduces to the low shift, the rotation speed of the engine is higher than the restriction shift, explosion accident may occur on the engine, if so, inconvenience may be brought to the driver of the vehicle, and certain damage can be caused to the engine. So according to the performances of the engine, the maximum rotation speed valve of the engine of each shift, to which the transmission can be reduced, is restricted, when down shift is carried out by the driver, if the rotation speed of the engine is higher than the restricted maximum rotation speed of the engine, the gear shift requirement is neglected, thus the engine can be protected effectively, and the occurrence of damage accident of the engine caused by the subjective faulty operation by the driver is avoided.

Description

technical field [0001] The invention relates to the field of transmissions, in particular to a manual shift logic control method of an automatic transmission. Background technique [0002] In the vehicle power transmission system, the automatic transmission has several determined speed ratios. There is a read-only memory in the transmission controller, which stores one or more shift logics, corresponding to the speed ratio under different output speed and torque requirements. The shift schedule is automatically selected, usually by a gear ratio that corresponds to the current output speed and torque requirements. Recently, a manual shift mode has been developed in automatic transmissions. In such an automatic transmission, the upshift or downshift from the current gear to other gears can be adjusted manually. In addition to the automatic shift mode, there is also a position for manual shift mode on the manually operated shift lever. The manual shift mode of the shift leve...

Claims

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Application Information

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IPC IPC(8): F16H59/04F16H61/00
Inventor 艾伦・莫里斯陈勇赵福全
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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