| 摘要 |
PROBLEM TO BE SOLVED: To provide a pump system including a control system for controlling a variable flow pump for controlling an oil flow and oil pressure in a hydraulic circuit in an engine. SOLUTION: This pump system includes a pump member 50, an actuating member 51 capable of controlling a flow generated by the pump member 50, and a solenoid valve system 60 including a solenoid valve portion 70 and a pressure regulating valve portion 80. The solenoid valve system 60 is operably associated with the pump member 50 and the pressure regulating 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 the oil flow and oil pressure. COPYRIGHT: (C)2007,JPO&INPIT
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