Abstract: An electro-hydraulic power steering system having a motor, a pump, and a control module all formed as an integral unit. The motor is shaft coupled to the pump and the pump housing and the motor housing are sealingly attached to prevent any fluid leakage. The control module is sealingly attached to the pump housing to prevent any fluid leakage. The control module is in electrical communication with the motor in order to drive a motor shaft and operate the hydraulic pump. The entire unit is submersible and can operate when submersed.

Abstract: A reservoir apparatus for an electronically controlled electric pump includes a pump housing (22), constructed of thermally conductive material, the pump housing having a cup-shaped reservoir portion (160) adapted to surround a pump assembly (164) to maintain the pump assembly submerged in hydraulic fluid (162). The pump housing also includes a fluid inlet (166) and a fluid outlet (168) for communicating fluid from the pump assembly to a hydraulically actuated device, such as a steering gear. The pump housing (22) also includes a first module member portion (20) adapted to seal with a second module member (24) so as to form a control module. The first module member portion (20) being operative to transmit thermal energy from electronic components into the pump housing and the hydraulic fluid.

Abstract: An electronic control module (16) for an electric motor (12) includes a first module member (20) attached to the electric motor and a second module member (24) defining an interior for housing a circuit board (28). The second module member (24) includes a control signal connector on with control signal terminals for quick attachment and release to a control signal wire set. The second module member also includes molded in positive and negative supply blades (50, 60) spaced apart from the control signal connector (40). The second module member also includes molded in positive and negative motor blades (70, 82), also spaced apart from the control signal connector. Each of the blades (50,60,70,82) is connected to the circuit board on the inside and has an aperture external of the control module for attachment to the power supply or to the electric motor (12).