Patent ID: 7124577

Claim:
A vehicular steering control device for driving vehicular steering by supplying pressure oil from a variable capacity-type hydraulic pump to a hydraulic actuator for steering through pressure oil supply lines in response to a steering drive command signal, said vehicular steering control device comprising: a steering flow control valve, which is disposed on said pressure oil supply lines, and which operates such that pressure oil of a flow corresponding to said steering drive command signal is supplied to said steering hydraulic actuator; a flow control valve, which is disposed on said pressure oil supply line between said variable capacity-type hydraulic pump and said steering flow control valve, and which discharges pressure oil from said variable capacity-type hydraulic pump to a tank via a discharge oil line so that a differential pressure across said steering flow control valve constitutes a set value; a restrictor disposed on said discharge oil line; and capacity control means for controlling a capacity of said variable capacity-type hydraulic pump such that a differential pressure across said restrictor becomes a set value.