Motor vehicles – Steering gear – With fluid power assist
Patent
1994-09-12
1997-01-14
Johnson, Brian L.
Motor vehicles
Steering gear
With fluid power assist
180427, 180428, 180429, 91375A, B62D 5083, B62D 600
Patent
active
055930026
ABSTRACT:
The hydraulic power steering system comprises a rotary valve unit actuated according to a twisting angle provided in a torsion bar connected between an input shaft and a pinion, and a conversion mechanism which can change the condition of the rotary valve unit for a given twisting angle of the torsion bar. A variable ratio lever mechanism may be used for this purpose. Thus, a torsion bar having a suitable rigidity can be used without causing any insufficiency in the assisting torque because the responsiveness of the steering system can be freely varied by changing the setting of the conversion mechanism. For instance, it is possible to provide a sufficient assist torque at low speed and a controlled responsiveness at high speed.
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Aoyama Toshihiko
Okada Yuichi
Carrier Joseph P.
Honda Giken Kogyo Kabushiki Kaisha
Johnson Brian L.
Weiner Irving M.
Zeender F.
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