Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1995-04-26
1996-05-07
Hill, Mitchell J.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
180 791, 180142, 180143, 180149, 180DIG4, 180DIG7, B62D 506, B62D 5083, B62D 600
Patent
active
055137202
ABSTRACT:
A power steering apparatus for a vehicle including a steering mechanism having a torsion bar, a rotary valve connected to an oil pump and disposed between an input shaft and an output shaft, a valve driving mechanism having a pressed portion projected on either the input shaft or the output shaft and a plunger on the one shaft of the input shaft or output shaft on which the pressed portion is not projected for pressing the pressed portion, setting a target assist force of an assist force of an assist force obtained by rotating the rotary valve in the torsion direction of the torsion bar and an assist force obtained by rotating the rotary valve in the reverse direction to the torsion direction, a plunger driving mechanism for driving the plunger so that the preset assist force is obtained, controlling the pressure itself of the rotary valve to the operation angle of the rotary valve, whereby varying the steering force of the steering wheel over a wide range of steering condition with a reduced burden to the driver.
REFERENCES:
patent: 4715464 (1987-12-01), Nakamura et al.
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patent: 4877100 (1989-10-01), Emori et al.
patent: 4905784 (1990-03-01), Yamashita
patent: 4913250 (1990-04-01), Emori et al.
patent: 4957468 (1990-09-01), Otsuka et al.
patent: 5016723 (1991-05-01), Sano
patent: 5135068 (1992-08-01), Emori et al.
Harara Mitsuhiko
Momose Nobuo
Takeo Tsuyoshi
Tanaka Tadao
Yamamoto Youichi
Hill Mitchell J.
Mitsubishi Jidosha Kogyo Kabushiki Kaisha
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