Oil pressure control system for power transmissions

Details Oil pressure control system for power transmissions Oil pressure control system for power transmissions

1986-08-12

1987-11-17

Look, Edward K.

Motors: expansible chamber type

With motive fluid valve

Relatively movable serial valves

60484, 60494, F15B 1108

Patent

active

047065494

ABSTRACT:
An oil pressure control system for a power transmission which includes an oil pump, a regulator valve, an inching valve, a selector valve, a change over valve, a modulator valve, a clutch servo, a first oil passage for communicating the oil pump with the selector valve via the regulator valve and the inching valve, a second oil passage for communicating the selector valve with the change over valve and the clutch servo, a third oil passage for communicating the change over valve with one end of the modulator valve and a fourth oil passage for communicating the first oil passage located between the inching valve and the selector valve with the other side of the modulator valve. The system permits a smooth, controlled operation of the clutch servo.

REFERENCES:
patent: 3999386 (1976-12-01), Crull et al.
patent: 4208874 (1980-06-01), Field, Jr.
patent: 4282898 (1981-08-01), Harmon et al.

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