Steering control apparatus

Details Steering control apparatus Steering control apparatus

B - Operations, Transporting

62

D

138/57

B62D 5/06 (2006.01) B62D 5/083 (2006.01)

Patent

CA 1185144

Abstract of the Disclosure An improved power steering apparatus includes a variable displacement pump During a steering operation, a flow control valve effects operation of a motor. assembly to vary the displacement of the pump as a function of variations in the demand for power steering fluid. Upon initiation of a steering operation, the displacement of the pump must be quickly increased to enable it to satisfy the impending demand for power steering fluid. Therefore upon initial rotation of a steering wheel, a steering controller restricts a flow of fluid to operate the motor assembly independently of the flow control valve. The displacement of the pump can thus increased before the flow control valve can be actuated during an initial portion of a steering operation.

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