| 摘要 |
PROBLEM TO BE SOLVED: To prevent oil from flowing out in the vicinity of an exhaust circulating gas inlet by arranging a blow-by gas leading inlet on an intake passage, arranging a manifold chamber on an upper part more than the other manifold chamber of an intake manifold, and arranging an exhaust circulating gas inlet on the other manifold chamber. SOLUTION: Two intake valves 51, 52 and an exhaust valve are arranged per cylinder 2 along arranging directions of a plurality of cylinders 2, and a breather passage 16 is connected to an intake passage 10 disposed upstream from a supercharger 14. An EGR passage 17 which extends from an exhaust manifold 12 is connected to an intake manifold 11. Manifold chambers 211, 212 communicated with two intake ports 71, 72 of each cylinder 2 through branch passages 201, 202 are formed in the intake manifold 11. The manifold chamber 212 is disposed upstream from the manifold chamber 211, an opening/closing valve 22 is disposed on an inlet part communicated with the intake passage 10 of the manifold chamber 211. disposed downstream, and an EGR gas inlet 17a is disposed on an inlet part of the manifold chamber 212 arranged upstream. |
