ENGINE OIL COOLING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an engine oil cooling device that can highly maintain the combustion efficiency of fuel by controlling a temperature of engine oil according to an engine operating state.

SOLUTION: The engine oil cooling device includes a cooling oil passage 200 having a cooling advancing function for advancing the cooling of the engine oil collected by an oil pan 120, and disposed differently from a return oil passage through which the engine oil circulating through an engine 100 is returned the oil pan 120. The cooling oil passage 200 includes a control valve 210 that controls its opening/closing state. When it is determined that the engine 100 is in a high load operating state based on a temperature and the pressure of the engine oil, the control valve 210 is maintained to be opened to guide the engine oil into the cooling oil passage 200.

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