Electronically controlled variable assist power steering system

Details Electronically controlled variable assist power steering system Electronically controlled variable assist power steering system

1988-06-17

1989-10-31

Marmor, Charles A.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

180148, 13762565, 251 3005, B62D 508

Patent

active

048770990

ABSTRACT:
A power steering gear for a vehicle capable of providing a variable degree of power assistance to supplement manual steering effort wherein the variable assist is achieved by controlling directly the magnitude of the steering pressure made available to a pressure operated motor by a vehicle engine driven pump, the magnitude of the pressure being controlled by a central processing unit that responds to vehicle steering wheel torque and vehicle speed to produce an appropriate steering pressure and power assist for all driving conditions.

REFERENCES:
patent: 4063490 (1977-12-01), Duffy
patent: 4418779 (1983-12-01), Nakayama
patent: 4463936 (1984-08-01), Shinbori
patent: 4473128 (1984-09-01), Nakayama
patent: 4485883 (1984-12-01), Duffy
patent: 4513835 (1985-04-01), Fukino
patent: 4516471 (1985-05-01), Duffy
patent: 4561521 (1985-12-01), Duffy
patent: 4570736 (1986-02-01), Waldorf
patent: 4585206 (1986-04-01), Itoh
patent: 4586582 (1986-05-01), Duffy
patent: 4669568 (1987-06-01), Kervagoret
patent: 4672885 (1987-06-01), Kervagoret
patent: 4673162 (1987-06-01), Lachmann
patent: 4760892 (1988-08-01), Duffy

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