Apparatus for controlling steering power in power steering system
This patent describes an apparatus for controlling a steering power in a power steering system which is used in an automobile. The apparatus consists of: a main pump which supplies a first hydraulic coil to the power steering system to operate the same; an oil pressure reaction chamber for controlling the steering power; a subpump of a reduced size smaller than that of the main pump for supplying a second hydraulic oil to the oil pressure reaction chamber to operate the same; a first oil path interconnecting the subpump and oil pressure reaction chamber to each other for flowing the second hydraulic oil through the first oil path; an oil tank; a second oil path branched from the first oil path and connected to the oil tank; a first control valve means disposed in the second oil path for raising the hydraulic pressure of the oil pressure reaction chamber in response to an increase in the running speed of the automobile so as to control the oil pressure reaction chamber to increase the steering power; and a second control valve means connected in parallel relationship with the first control valve means for changing the steering power in response to the hydraulic pressure of the first hydraulic oil supplied from the main pump.
- Assignee:
- Koyo Jidoki Kabushiki Kaisha, Nara
- Patent Number(s):
- US 4775022
- OSTI ID:
- 6888241
- Resource Relation:
- Patent File Date: Filed date 15 Jun 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AUTOMOBILES
CONTROL EQUIPMENT
HYDRAULICS
DESIGN
HYDRAULIC FLUIDS
OILS
PUMPS
TANKS
VALVES
CONTAINERS
EQUIPMENT
FLOW REGULATORS
FLUID MECHANICS
FLUIDS
MECHANICS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
VEHICLES
WORKING FLUIDS
330601* - Vehicle Design Factors- Body & Chassis