Automotive, Mechanical and Electrical Engineering

Аннотация

At present, several typical automatic transmissions are (A. bastian, 1995): hydraulic mechanical Automatic Transmission (AT), metal-belt-type Continuously Variable Transmission (CVT), electronic-controlled Automatic Mechanical Transmission (AMT). These different kinds of transmissions have their own advantages and disadvantages, and research on them at home and abroad has been continuously deepened to meet people’s increasing demands for comfortable, shifting smoothness, fuel economy and low emission. The realization of electronic-controlled Automatic Mechanical Transmission (AMT) is based on the manual gear transmission. Its structure is simple, and keeps the majority of assembly components of dry clutch and manual transmission, only with the gear lever of the manual operating system being replaced with automatic control mechanism. It retains the advantages of the gear of the original manual transmission, such as high transmission efficiency, low cost, simple structure, and easy production, which, as a result, brings good inheritance in production and low cost in transformation, making it suitable for the situation of China.