| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil recovering unit capable of restraining mixture of oil caused by motion components in a crank chamber by preventing the oil from dropping from a cylinder bore. SOLUTION: The oil recovering unit 6A is provided with a circular oil receiver 7A arranged at a lower end of the cylinder bore 2 of an internal combustion engine 1 and extended along an inner periphery of the cylinder bore 2, and a communication passage 8 for connecting the oil receiver 7A and a return passage 5. The oil recovering unit 6A also leads the oil received by the oil receiver 7A to an oil pan while the oil passes through the outside of the cylinder bore 2 in the radial direction rather than the inner peripheral surface of the cylinder bore 2. COPYRIGHT: (C)2008,JPO&INPIT
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