Control system for automatic transmission with overdrive device

Details Control system for automatic transmission with overdrive device Control system for automatic transmission with overdrive device

1981-08-31

1984-07-31

Herrmann, Allan D.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74752D, 74688, B60K 4118, F16H 374, F16H 4708

Patent

active

044622767

ABSTRACT:
An automatic transmission having a torque converter, an automatic transmission apparatus comprising a planetary gear device and a forward clutch, and a final reduction gear device connected to an output shaft of the automatic transmission apparatus. An overdrive device comprising a fluid operated overdrive clutch and overdrive gears is provided between the output shaft of the torque converter and the final reduction gear device. A hydraulic circuit is provided for supplying pressure oil to the forward clutch and the overdrive clutch. An electro-magnetic valve is provided to be operated by a manual switch for supplying the pressure oil to the overdrive clutch for establishing the overdrive transmission.

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