192 clutches and power-stop control – Transmission control and clutch control – Common control
Patent
1983-04-22
1985-12-24
Krizmanich, George H.
192 clutches and power-stop control
Transmission control and clutch control
Common control
192 362, 192 8719, 74869, F16D 2510, B60K 4122
Patent
active
045600457
ABSTRACT:
An automatic transmission having two torque input shafts is connected selectively to an engine through hydraulically actuated clutches. Each input shaft is associated with one of the clutches and with a first or a second group of gear ratios. A driveable connection is made between each input shaft and the gears of the associated gear ratios through operation of a hydraulic actuator. First and second control valves selectively connect the outlet of a hydraulic pump to the actuator in accordance with the position of a gear selector. When the actuators move the shifters to the gear ratio engaging position, the associated clutch is engaged and the other clutch disengaged. Electrical control circuit coordinates clutch engagement, actuator motion and control valve position.
REFERENCES:
patent: 3664470 (1972-05-01), Beech et al.
patent: 3667577 (1972-06-01), Weymann
patent: 3906817 (1975-09-01), Kreitzberg
patent: 3946842 (1976-03-01), Siebers et al.
patent: 4219109 (1980-08-01), Ushijima et al.
patent: 4406356 (1983-09-01), Prince
patent: 4501175 (1985-02-01), Tatsumi
Ford Motor Company
Harrington Donald J.
Krizmanich George H.
McKenzie Frank G.
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