| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil supply control device improved in fuel economy capable of selecting the supply or the shut-off of oil to an oil jet and changing of oil supply pressure to a main gallery by controlling the open close action of a control valve opening and closing an oil supply passage based on an engine operation mode. SOLUTION: In this oil supply control device, a mechanical oil pump driven by an engine crank shaft for supplying oil to the main gallery and the oil jet for cooling a piston can select the supply or the shut-off of oil to the oil jet, and can change oil supply pressure to the main gallery. COPYRIGHT: (C)2007,JPO&INPIT
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