Vehicular power steering system

Details Vehicular power steering system Vehicular power steering system

1982-07-22

1984-09-25

Peters, Jr., Joseph F.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

74388PS, 91450, 180 791, 180141, 361236, B62D 504, B62D 506

Patent

active

044731280

ABSTRACT:
In a vehicular power steering system, the hydraulic fluid supply to a hydraulic power actuator is controlled in accordance with the vehicle speed and the angular velocity of the steering wheel. Preferably, the fluid supply is reduced so that the steering effort becomes heavier as the vehicle speed increases while the fluid supply is increased when the angular velocity of the steering wheel is high. To control the fluid supply, there is provided, in a power steering system, a bypass valve means for draining a portion of the fluid flow to bypass the power actuator, and control means for producing a control signal to control the bypass valve means in accordance with the vehicle speed and the angular velocity of the steering wheel.

REFERENCES:
patent: 2987135 (1961-06-01), Harvey
patent: 2990902 (1961-07-01), Cataldo
patent: 3692137 (1972-09-01), Inoue
patent: 3882954 (1975-05-01), Inoue
patent: 3897846 (1975-08-01), Inoue
patent: 3948338 (1976-04-01), Toshioka et al.
patent: 4047728 (1977-09-01), Takahashi et al.
patent: 4071109 (1978-01-01), Ezoe
patent: 4119172 (1978-10-01), Yanagishima et al.
patent: 4274504 (1981-06-01), Kawabata et al.
patent: 4392540 (1983-07-01), Michio et al.
F. J. Adams, "Automotive Power Steering `Feel`", Proc. Instn. Mech. Engrs., vol. 195, pp. 29-36 (Mar. 1981).

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