Electro-rheological clutch apply system

Details Electro-rheological clutch apply system Electro-rheological clutch apply system

1991-07-08

1992-03-10

Bonck, Rodney H.

192 clutches and power-stop control

Field responsive frictional media type

188274, 192 58C, 192 7012, 192 7014, 192 84E, 1921061, 192113B, F16D 6300, F16D 65853, F16D 3500

Patent

active

050943286

ABSTRACT:
An apply system for clutches employing electro-rheological fluid to transmit torque between two sets of interleaved plates. The plates are disposed within a stationary housing. The first set of plates is fixed to the stationary housing. The second set of plates is fixed to a shaft rotatable relative to the housing. A piston is coaxially disposed against the plates at one end of the interleaved plates. A piston apply chamber is located in the stationary housing on the opposite side of the piston. The electro-rheological fluid is circulated through the system by a pump, passing by the apply side of the piston, then between the plates, and then back to the pump. When there is a voltage potential between the plates, the flow between the plates is restricted and the pressure of the fluid on the piston builds, displacing the piston toward the plates. The plates are moved closer together by the piston. Contact between the plates is prevented by insulating elements mounted to alternate surfaces of the plates.

REFERENCES:
patent: 3150678 (1964-09-01), Nuber
patent: 3788099 (1974-01-01), Miller
patent: 4444298 (1984-04-01), Stangroom
patent: 4773632 (1988-09-01), Hartel
patent: 4802560 (1989-02-01), Bhadra et al.
patent: 4871342 (1989-10-01), Boss et al.
patent: 4896752 (1990-01-01), Carlson et al.
patent: 4966268 (1990-10-01), Asano et al.

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