Electronically controlled steering system

Details Electronically controlled steering system Electronically controlled steering system

1988-12-30

1990-05-22

Hill, Mitchell J.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

60468, 180143, B62D 508

Patent

active

049269569

ABSTRACT:
A power steering gear mechanism for vehicles with a variable assist characteristic having primary and secondary steering valve portions, the primary portion controlling pressure in a power steering fluid motor, a steering control valve that controls the magnitude of the steering assist as a function of vehicle speed the secondary steering valve portion developing a steering torque signal, and an electronic signal processor for controlling the steering control valve in response to changes in the vehicle speed and the steering torque signal.

REFERENCES:
patent: 4561521 (1985-12-01), Duffy
patent: 4570736 (1986-02-01), Waldorf
patent: 4760892 (1988-08-01), Duffy
patent: 4828067 (1989-05-01), Duffy

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