| 摘要 |
PROBLEM TO BE SOLVED: To raise temperature of lubricating oil at the time of start warm-up operation and obtain sufficient cooling effect of lubricating oil at the time of high lubricating oil temperature such as high speed heavy load operation. SOLUTION: In a lubricating oil cooling device for a crankshaft 36 having a flow passage 12 in which engine cooling water is circulated formed inside of the crankshaft 36 and having an oil passage pipe 13 capable of supplying lubricating oil to a sliding part of the crankshaft 36 built in the flow passage, engine cooling water can be circulated in the flow passage. COPYRIGHT: (C)2006,JPO&NCIPI
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