| 摘要 |
PROBLEM TO BE SOLVED: To provide a closed breather system capable of preventing oil mist remaining in blow-by gas without being eliminated in a ventilator from flowing into an intake air pipe.SOLUTION: The present invention relates to a closed breather system for separating and recovering oil mist from a blow-by gas 1 extracted from an engine 3 via a ventilator 2 and returning the oil mist to an intake pipe 7. A part of a gas return pipe 6 introducing the blow-by gas 1 from the ventilator 2 to the intake pipe 7 is brought into contact with an exhaust pipe 17 to constitute a heating part 22 receiving heat from the exhaust pipe 17. Oxidation catalyst 23 for the blow-by gas 1 oxidizing the oil mist is provided in the heating part 22. |
