| 摘要 |
PROBLEM TO BE SOLVED: To provide a crankshaft bearing oil supply structure suitable particularly to a bearing as a rolling bearing for supplying a small amount of oil to the bearing journaling a crankshaft without lowering the output performance of an engine. SOLUTION: The crankshaft bearing oil supply structure 10A is provided for supplying oil to the bearing 7 journaling the crankshaft 56. It comprises an oil supply passage 1A for supplying oil to the bearing 7 via an oil return passage 2A which returns the oil into an oil pan 54. The oil return passage 2A has an oil reservoir portion L which is formed by closing a portion on the lower side of a portion of the oil return passage 2A with which the oil supply passage 1A is communicated. The applied bearing 7 is a rolling bearing. COPYRIGHT: (C)2009,JPO&INPIT
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