1986-10-20

Electronic Transmission Control 861032

Researches and developments of electronic transmission control have been made along with the progresses of electronical technologies in order to meet the requirements of decreasing fuel consumption as well as improving drivability. And nowadays many kinds of electronically controlled transmissions have been applied to a variety of cars.In this paper, a history of electronic transmission control from the first control systems mounted on TOYOTA CORONA in 1970s for the first time in the world to the newest ones having a lock-up function for fluid coupling (Torque Converter) as well as progresses of the respective electronical transmissions to their practical uses will be explained.And furthermore, the present situation in Japan will be analyzed, in which the respective electronical transmission controls of different constructions and functions have been developed to be practically used, and finally the future developments and perspectives of electronical transmission control will be discussed.

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