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What are the principles of various transmissions?

1 Answers

OMorgan

07/29/25 1:11pm

Transmission working principles are as follows: 1. Manual transmissions mainly consist of gears and shafts, achieving speed and torque variation through different gear combinations. 2. Automatic transmissions (AT) are composed of a torque converter, planetary gears, and a hydraulic control system, achieving speed and torque variation through hydraulic power transmission and gear combinations. The torque converter is the most distinctive component of an AT, consisting of a pump impeller, turbine, and guide wheel, directly inputting engine power to transmit torque and perform clutch functions. 3. If liquid is used instead of air as the medium for transmitting kinetic energy, the pump impeller will drive the turbine to rotate through the liquid, with a guide wheel added between the pump impeller and turbine to improve liquid transmission efficiency. Since the torque converter's automatic speed and torque variation range is not large enough and efficiency is relatively low, several rows of planetary gears are connected in series behind the turbine to improve efficiency. The hydraulic control system automatically operates the planetary gears according to engine working conditions, thereby achieving automatic gear shifting.

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