Electro-hydraulic control for a transmission having a torque con

Details Electro-hydraulic control for a transmission having a torque con Electro-hydraulic control for a transmission having a torque con

1981-05-21

1983-11-22

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

Alternatively operative drive and clutch

192 331, 192 358, B60K 4122, F16D 2510

Patent

active

044163584

ABSTRACT:
A transmission control for an automatic shifting multiratio transmission having a torque converter clutch including a solenoid-operated valve. The solenoid-operated valve controls the operating condition of the torque converter clutch in response to an electronic control which is conditioned by a number of operating parameters and also including at least one pressure-operated electric switch. The one pressure-operated electric switch is responsive to the fluid pressure level in one of the friction devices for controlling one transmission ratio. Whenever the pressure-operated electric switch is actuated or deactuated, the torque converter clutch is momentarily disengaged to provide a smoother ratio change in the transmission.

REFERENCES:
patent: 3857302 (1974-12-01), Morris
patent: 4095486 (1978-06-01), Ohnuma
patent: 4298105 (1981-11-01), Duhaime

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