Electronic control gear selecting/shifting shifter of automobile automatic transmission

Abstract

The invention discloses an electronic control gear selecting / shifting shifter of an automobile automatic transmission. The electronic control gear selecting / shifting shifter only uses a work drive motor and a control motor to coordinate, switch and control devices of execution units, such as a clutch, a gear selecting mechanism and a gear shifting mechanism. The quantity of the motors is decreased, a control structure of a servo system is simplified, quantity of electronic devices and sensing elements is reduced accordingly, and purposes of lowering cost and improving reliability can be achieved. Each mechanism of the electronic control gear selecting / shifting shifter does synergic movement, and the electronic control gear selecting / shifting shifter has good output characteristics and location capability, can reduce requirements for speed regulation and control of the motors, is easy to control and achieve, and improves reliability of a system.

Description

technical field [0001] The invention relates to an automobile transmission, in particular to a selection / shift switching device of an electronically controlled mechanical automatic transmission. Background technique [0002] The transmission gear structure of the AMT electronically controlled mechanical transmission is exactly the same as that of the traditional MT. The key technology of the AMT transmission lies in its gear selection and shifting control mechanism, which mainly includes three types: electro-hydraulic, electro-pneumatic and pure electric control. For the pure electric control type, there are two common layout schemes at present: one is to regard the shifting process as three aspects of controlling the clutch, controlling gear selection and controlling shifting, and using three motors to be responsible for one aspect; The second is divided by the unit of the shift fork shaft of the transmission, and a motor is arranged on each shift fork shaft, so that the mo...

AI Technical Summary

Problems solved by technology

However, the above-mentioned schemes all require more than three motors, and each motor needs to work together to operate. The servo electronic control system needs to be equipped with high-precision sensors, power amplifiers, incremental encoders and other electronic control components. The structure is complicated and the cost is high.

Images