| 摘要 |
PROBLEM TO BE SOLVED: To uniformly supply EGR gas to each cylinder, by comprising an EGR passage for refluxing exhaust gas on a charge air side, a partition for preventing interference of intake air, a hole which crosses over the partition and is open to intake air passages disposed on both sides of the partition so that an outlet of the EGR passage is connected to the hole. SOLUTION: A pipe coupling 50 connects an air cleaner and an intake manifold. Inside the pipe coupling 50 a partition 51 is formed, and a hole 53a which opens at intake passage 52a and 52b formed on both sides of the partition 51 and crosses over the partition 51. The hole 53a is formed to be circular centering a position of an end of the partition 51. A flange-like connecting portion 53 is disposed to be connected to the hole 53a, and EGR piping is communicated to the connecting portion 53. When EGR gas is made to flow into the pipe coupling 50 through the EGR piping and the hole 53a, the EGR gas is separated by the partition 51 to be made to flow through the intake passages 52a and 52b which are provided on the both sides of the partition 51. Accordingly, the EGR gas can be uniformly supplied to each cylinder.
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