Title: Power steering control device

Abstract: A power steering control device which is provided with a sensing means which detects the weight of a load carried on the vehicle and a pressure control valve which regulates the pressure of the hydraulic fluid that is supplied to the power steering in response to the value of the detected load, thereby lightening the operation of the steering wheel when the load on the vehicle is large. The pressure control valve can be regulated also by the output of a vehicle speed sensing means. With the controlling factors of both the vehicle load and the vehicle speed, the operation of the steering wheel is lightened when the vehicle speed is low and the vehicle load is large, whereas the operation of the steering wheel meets with a proper resistance when the vehicle speed is high and the vehicle load is small, thereby stabilizing the operation of the steering wheel and giving an ideal feeling to the driver to operate the steering wheel.

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Inventors: Ohtuka, Tadao (Namekawa, JP)
Ohe, Takeshi (Higashimatsuyama, JP)
Hamano, Kunihiro (Tokigawa, JP)

Application Number: 941075
Filing Date: 1978-09-11
Publication_date: 1980-07-15
Assignee: Jidosha Kiki Co., Ltd. (Tokyo, JP)
Primary Class(es): 180/422 180/441
Other Classes:
US Patent Ref:

3171298	Mar, 1965	Biabaud	180/143.
3744515	Jul, 1973	Inoue	180/143.
3877540	Apr, 1975	Masuda	180/143.
3901343	Aug, 1975	Inoue	180/142.
4000785	Jan, 1977	Nishikawa	180/143.
4119172	Oct, 1978	Yanagishima	180/142.

Other Refs: 2401950

Jul, 1974	DE

Primary Examiner: Love, John J.
Assistant Examiner: Schrecengost, Randall A.
Attorney: Blanchard, Flynn, Thiel, Boutell & Tanis