| 摘要 |
PURPOSE: A continuous control type variable oil pump unit is provided to improve fuel efficiency and to reduce the noise of an oil pump by continuously variable-controlling an oil pump which is matched to an engine demand hydraulic diagram. CONSTITUTION: A continuous control type variable oil pump comprises a variable oil pump(1). The variable oil pump is positioned in the extended end(1b) of a cam ring(1a) which is variably positioned in order to vary oil inflow and discharge volume. The variable oil pump comprises a piezoelectric element. The piezoelectric element lifts or lowers the extended end by receiving the control signal of an ECU for calculating an oil discharge flow using the oil pressure according to an engine RPM. [Reference numerals] (a) Engine RPM; (AA) Discharge of oil; (b) Oil pressure; (BB) Intake of oil |
