| 摘要 |
An electric powered hydraulic steering system (10) for a vehicle comprises a power steering motor (12) having a housing (18) with an exterior surface (16) and an interior chamber (24). The power steering motor (12) further includes a rack bar (26) for turning the steerable wheels of the vehicle. The rack bar (26) extends through the interior chamber (24) of the housing (18). A piston (34) is attached to the rack bar (26) and divides the interior chamber (24) into two chamber portions (38 and 40) for receiving a fluid. The piston (34) moves the rack bar (26) linearly within the interior chamber (24) depending upon a pressure differential between the two chamber portions (38 and 40). The system (10) further includes a control valve (54) for directing the fluid into the chamber portions (38 and 40) in the housing (18) of the power steering motor (12), a pump (56) for supplying the fluid to the control valve (54), a reservoir (58) for providing the fluid to the pump (56), and an electric motor (60) for driving the pump (56). The power steering motor, control valve, pump, reservoir, and electric motor form an integrated unit. |
