Throttle failsafe valve for an automatic power transmission

Details Throttle failsafe valve for an automatic power transmission Throttle failsafe valve for an automatic power transmission

F - Mech Eng,Light,Heat,Weapons

16

H

138/12.1

F16H 61/02 (2006.01) F16H 59/18 (2006.01) F16H 61/12 (2006.01)

Patent

CA 1144449

Abstract of the Disclosure A hydraulic control system for an automatic power transmission, comprising a pressure regulator valve for producing a line pressure, at least one shift valve pre- dominant over shifts between predetermined gear ratios operable to distribute the line pressure selectively to the frictional elements, and a transmission throttle valve engaged by the accelerator pedal of the vehicle through a mechanical linkage and operative to supply the pressure regulator valve and the shift valve a throttle pressure variable with depression of the accelerator pedal in the absence of a failure in the mechanical linkage and to interrupt supply of the throttle pressure to the pressure regulator valve and the shift valve and pass the line pressure to the pressure regulator valve in response to a failure in the mechanical linkage.

334621

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