| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil recovery structure of a blow-by gas reducing device capable of reducing a moisture quantity in oil recovered from an oil separator. SOLUTION: An oil return passage 1b having the upper end opening in a cam chamber and having the lower end opening in a crankcase respectively, is formed over a cylinder block 1 from a cylinder head. A heat exchanger 10 composed of a double tube structure is stored in this oil return passage 1b. Lubricating oil recovered from the cam chamber is made to flow in an oil recovery outside passage of the heat exchanger 10, and separation oil recovered from a separator case 92 of a PCV device is made to flow in an oil recovery inside passage of the heat exchanger 10. Moisture in the separation oil evaporates by imparting heat of the lubricating oil to the separation oil, and a water quantity flowing in an oil pan can be reduced. COPYRIGHT: (C)2008,JPO&INPIT
|
