| 摘要 |
PROBLEM TO BE SOLVED: To provide a system capable of excellently ventilating a blowby gas over a wide operation area without reference to pressure in an intake passage or an intake air amount.SOLUTION: A blowby gas recirculation device includes: a first blowby gas circulation passage 61 which communicates internal chambers 7, 8 where a blowby gas accumulates with a downstream side of a throttle valve 33 in an intake passage 3; a second blowby gas circulation passage 62 which communicates the internal chambers with an upstream side of a supercharger 5 in the intake passage; a third blowby gas circulation passage 63 which communicates the internal chambers with a further upstream side of a connection position of the second blowby gas circulation passage in the intake passage; a PCV valve 64 provided so as to open and close the first blowby gas circulation passage; and a leak passage 646 which allows fresh air to bypass the PCV valve from downstream from the throttle valve in the intake passage to flow into the internal chambers when the PCV valve is closed. |
