Steering control valve for variable power assist steering system

Details Steering control valve for variable power assist steering system Steering control valve for variable power assist steering system

1987-04-29

1989-08-29

Garrett, Robert E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91443, 13762524, 13759612, 180142, 180143, F15B 910

Patent

active

048606359

ABSTRACT:
A steering control valve for a power steering system for a vehicle includes a valve structure which defines a plurality of variable flow orifices as steering input torque is applied thereby creating pressure differential acting on fluid motor. A solenoid operated variable flow orifice valve is operable in response to a control factor, such as vehicle speed, other than the steering input torque defines a variable flow orifice connected in series with one of the plurality of variable flow orifices.

REFERENCES:
patent: 4465098 (1984-08-01), Bacardit
patent: 4512238 (1985-04-01), Bacardit
patent: 4561521 (1985-12-01), Duffy
patent: 4570735 (1986-02-01), Duffy
patent: 4594936 (1986-06-01), Bacardit

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