| 摘要 |
PURPOSE: A cooling device of blow-by gas is provided to improve collection rate that oil contained in the blow-by gas is separated by lowering temperature of the blow-by gas and to increase the durability of an engine having a turbo charger by preventing the oil from flowing into an intake system of the engine. CONSTITUTION: In a recirculation system of blow-by gas for separating oil contained in the blow-by gas, and then flowing and burning the oil again in a combustion chamber while the blow-by gas generated in a crank case of an engine(10) is recirculated through a blow-by gas line(13) to an intake system of the engine, a blow-by gas cooler(30) having a blow-by gas passage and a coolant circulation passage is mounted in the middle of the blow-by gas line. Coolant inlet and outlet ports of the coolant circulation passage are connected in the middle of a coolant line(40) to pass the coolant circulated forcibly by a water pump(20) to the coolant circulation passage of the blow-by gas cooler.
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