Control system for a fluid pressure engaged clutch

Details Control system for a fluid pressure engaged clutch Control system for a fluid pressure engaged clutch

1981-11-09

1984-04-24

Krizmanich, George H.

192 clutches and power-stop control

Transmission control and clutch control

Common control

192109F, F16D 4328

Patent

active

044442971

ABSTRACT:
Fluid pressure for engagement of a clutch is controlled by a valve alternating between supply and drain conditions in response to a high frequency electrical square wave signal. The valve produces a low flow pilot pressure signal which controls clutch engagement pressure through a valve incorporating a piston which allows clutch engagement pressure to drain whenever that pressure exceeds pilot pressure.

REFERENCES:
patent: 3004447 (1961-10-01), Sand
patent: 3025717 (1962-03-01), Christenson
patent: 3583422 (1971-06-01), Dach et al.
patent: 3674121 (1972-07-01), Copeland

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