Power steering devices

Details Power steering devices Power steering devices

1997-11-19

1999-09-14

Hurley, Kevin

Motor vehicles

Steering gear

Power assist alarms or disablers

180442, 60403, B62D 530

Patent

active

059507578

ABSTRACT:
A power steering device includes a hydraulic pump for discharging working fluid, an actuator for producing a steering assisting force by means of working fluid, a hydraulic passage for connecting the hydraulic pump and the actuator, a check valve arranged to the hydraulic passage to allow flow of working fluid from the hydraulic pump to the actuator and preventing flow thereof in the opposite direction, an accumulator connected to the hydraulic passage downstream of the check valve, a pressure switch for detecting a pressure within the hydraulic passage downstream of the check valve, a control unit for controlling the hydraulic pump in response to the pressure switch, and a display for showing an anomaly of the power steering device. When determining the anomaly of the power steering device, the control unit stops the hydraulic pump and/or makes the display show the anomaly.

REFERENCES:
patent: 3283165 (1966-11-01), bloch
patent: 4217968 (1980-08-01), Dezelan
patent: 4303089 (1981-12-01), Gage et al.
patent: 4476677 (1984-10-01), Hanshaw
patent: 5209317 (1993-05-01), Schnelle
patent: 5449186 (1995-09-01), Gerl et al.

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