| 摘要 |
PURPOSE:To uniformly distribute control gas into plural distribution pipes, by a method wherein the control gas of air-fuel mixture is open to the interior of the branch part of a suction manifold. CONSTITUTION:Exhaust gas, flowing out through a reflux exhaust gas exhaust port, flows in a main passage 7 through a conduit 9, and is supplied in branch parts 21 and 22 of first and second manifolds M1 and M2, respectively. The exhaust gas uniformly branches to branch pipes 31, 31 and 32, 32, respectively and is supplied to first - fourth cylinders E1-E4. A second air passage 10, serving as a second control gas passage, is connected to the upper surfaces in the branch parts 21 and 22 of the first and second suction manifolds M1 and M2. Blow-bye gas enters a communicating passage 19 through a conduit 17, and the blow-bye gas, branching to both sides at the central part thereof, is sucked in the first and second suction manifolds M1 and M2. |
