| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil pan for displaying sufficient heat insulation performance to stored lubricating oil for an internal combustion engine. SOLUTION: The contact of the end part 60a of an oil temperature sensor 60 exposed on a boundary surface A with lubricating oil bends the sensor 60 in an arrow X direction. At that time, a heat insulation cover 50 connected with the sensor 60 and a wire 64 rotates in an arrow Y1 direction with a journal part 62 as a rotating shaft to be made into an opened condition, to make to flow down lubricating oil accumulated in an upper chamber 44 into a lower chamber 46. A lower side main body 42, a buffle plate 48, and the cover 50 have their insides of the double vacuum wall structure and extremely low thermal conductivity. The inside of the body 42 is sealed by a buffle plate 48 and the cover 50 usually, thereby displaying high heat insulating performance to the inside lubricating oil.
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