Transmission controls

Details Transmission controls Transmission controls

F - Mech Eng,Light,Heat,Weapons

16

H

74/140

F16H 63/30 (2006.01) F16H 57/08 (2006.01) F16H 61/04 (2006.01) F16H 61/686 (2006.01)

Patent

CA 1070524

ABSTRACT A control mechanism for a planetary overdrive gear mechanism for an automatic transmission which utilizes a double-acting one-way clutch with a clutch controller to immobilize the cage for the one-way clutch to allow inner and outer races to rotate relative to one another and a brake mechanism for the inner race of the clutch which is integral with the sun gear of the gear mechanism, The control mechanism includes a servomotor to activate the controller, a servomotor to operate the brake mechanism, a shift valve responsive to vehicle speed and throttle position to actuate the servomotors, and an interlock activated by the controller servomotor operative to prevent fluid actuation of the brake servomotor.

290957

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