Control valve mechanism for a power transmission

Details Control valve mechanism for a power transmission Control valve mechanism for a power transmission

1979-11-16

1981-11-03

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 327, 192 331, 192 324, 74868, B60K 4124

Patent

active

042981050

ABSTRACT:
An electro-hydraulic control for a power transmission has a solenoid controlled shift valve and a hydraulic controlled shift valve. Preferably, the solenoid controlled valve controls the control clutch while the hydraulic controlled valve controls the clutch or brake which is effective to establish a drive ratio in the transmission. When a ratio change involving the disengagement of the clutch or brake occurs, the exhaust fluid therefrom operates on an electrical switch which is effective to provide momentary disengagement of the torque converter clutch.

REFERENCES:
patent: 3693478 (1972-09-01), Malloy
patent: 3985046 (1976-10-01), Morris et al.
patent: 4142614 (1979-03-01), Fujioka

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