An electro-hydraulic power steering system 34 suitable for an electric vehicle includes a hydraulic actuator 15 acting on a steering rack of the vehicle and a pump 17 providing hydraulic pressure to the actuator via a pipe 37. An accumulator 42 is connected to pipe 37 and holds hydraulic fluid under pressure, with a valve 43 between accumulator 42 and pipe 37 so that when valve 43 is closed accumulator 42 is isolated from pipe 37 and fluid from pump 17 is provided to actuator 15 via pipe 37, and when valve 43 is open fluid held in accumulator 42 is provided to actuator 15 via pipe 37. A controller 40 may also be provided which preferably predicts an upcoming power steering requirement of the vehicle and which may control pump 17 according to this upcoming requirement.
Electro-hydraulic power steering system
2018-01-03
Patent
Electronic Resource
English
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
Electro hydraulic power steering system
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