Hydraulic pump system with variable flow and pressure

摘要

A pump system including a control system for controlling a variable flow pump for controlling oil flow and oil pressure in a hydraulic circuit (10) in an engine. The system includes a pump member (50), an actuating member (51) capable of controlling the flow generated by the pump member (50), and a solenoid valve system (60) including a solenoid valve portion (70) and a pressure regulator valve portion (80). The solenoid valve system (60) is operably associated with the pump (50) and the pressure regulator valve portion (80) is operably associated with the actuating member (51) for selectively controlling the flow generated by the pump member (50). An electronic control unit (30) is operably associated with the solenoid valve portion (70), wherein the electronic control unit (30) is selectively operable to provide an input control signal to the solenoid valve portion (70) for controlling oil flow and oil pressure.