| 摘要 |
PURPOSE:To suppress the driving power to the necessary min. value by adjusting the reciprocation stroke quantity of a plunger for supplying lubricating oil under pressure by a control cam and increasing the driving power of an electric motor when a deviation is generated between the actual position of the control cam and the aimed position corresponding to the operation state. CONSTITUTION:The first and second plungers 32 and 33 are arranged in parallel and in free reciprocation in a pump housing 31, and perform the metering and discharge of the lubricating oil for the oil supply to ports and for the direct oil supply, respectively. The gear parts 32a and 33a of the first and second plungers 32 and 33 are revolution-driven by a driving worm interlocked with the output shaft of an engine, and the stroke quantity is adjusted by the contact of a control cam 36 with the cam surface. The driving power of a step motor 21 for feedback-controlling the control valve cam 36 to the aimed value corresponding to the operation state on the basis of the detection value of a position sensor 28 is increased when a deviation is generated between the aimed value and the actual value. |
