| 摘要 |
An internal combustion engine which employs lubricating oil as part of the cooling system. A sleeve forms the cylinder wall and is completely surrounded by a jacket space formed by a wall exposed to the atmosphere, including air circulated by the engine's fan. An oil pump maintains the jacket space substantially full of oil which transfers heat from the sleeve to the outer wall. On its return, the oil passes through an intermeshed heat exchange which has a set of horizontal shelves formed on the inside of the crankcase wall and an opposing and intermeshed set of horizontal shelves located inside the crankcase. A series of fins are formed on the outside of engine walls opposite the oil jacket and the intermeshed heat exchanger.
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