| 摘要 |
PURPOSE:To simultaneously perform appropriate lubrication and cooling, by providing a cooler in a lubricating oil passage and providing a cooler and a solenoid valve in a cooling oil passage. CONSTITUTION:Oil is supplied from the discharge port 14 of an oil pump 11 through the lubricating oil passage 13 to lubricated sections such as a rotor 3, the sliding parts of side housings 2 and an eccentric shaft 5 and the engaged parts of an internal gear 4 and a stationary gear 6. An oil cooler 21 employing engine cooling water is provided in the lubericating oil passage 13. oil is supplied from the discharge port 14 of the pump 11 through the cooling oil passage 15 to an injection port 16 opened through one side housing 2. Another oil cooler 22 employing air and the solenoid valve 23 are provided in the cooling oil passage 15. The solenoid valve 23 is reguiated by a cotroller 27 connected to sensors 24-26 for the negative pressure, speed and water temper ture. The lubricating oil is supplied while kept at a relatively high temperature. The cooling oil is supplied while kept at a relatively low temperature. The cooling oil is supplied to the rotor 3, only as occasion demands. |
