Method of controlling creep preventing device for vehicle equipm

Details Method of controlling creep preventing device for vehicle equipm Method of controlling creep preventing device for vehicle equipm

1986-10-27

1987-12-01

Bonck, Rodney H.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 0055, 192 009, 192 0094, 192109F, B60K 4128, F16D 4328

Patent

active

047097922

ABSTRACT:
In a creep preventing device of the type in which an oil discharge passage communicating with an oil tank is branched from an oil feed passage for supplying an operating oil pressure to a starting clutch or other starting elements of an automatic transmission of a vehicle and an electromagnetic valve capable of closing the oil discharge passage under the demagnetized state and opening it under the excited state is disposed in the oil discharge passage, a method of controlling the creep preventing device is characterized in that when the electromagnetic valve is returned from the excited state to the demagnetized state, the electromagnetic valve is chopped a predetermined number of times. This method can re-connect the starting elements smoothly without incurring any shock.

REFERENCES:
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patent: 4116321 (1978-09-01), Miller
patent: 4194608 (1980-03-01), Usui et al.
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patent: 4363389 (1982-12-01), Zaunberger et al.
patent: 4373619 (1983-02-01), Schritt et al.
patent: 4444297 (1984-04-01), Parsons
patent: 4465168 (1984-08-01), Sato
patent: 4487303 (1984-12-01), Boueri et al.
patent: 4513638 (1985-04-01), Nishikawa et al.

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