| 摘要 |
PROBLEM TO BE SOLVED: To effectively reduce noise with a simple structure by providing a cylindrical protruding pipe communicating with an intake passage within the inlet tank part of an intercooler, and porously forming the protruding pipe. SOLUTION: The downstream of a first intake passage 10 having an air cleaner 12 connected to the upstream end thereof is connected to a supercharger 16 such as turbo charger, and the downstream of the supercharger 16 is connected to the intake manifold 40 of an engine 18 through an intercooler 26. The intercooler 26 comprises an inlet tank part 28 connected to the upstream of a core part 30 having a plurality of pipes and fins and an outlet tank part 32 connected to the downstream thereof. A protruding pipe 46 consisting of a porous pipe and communicating with a second intake passage 24 is provided within the inlet tank part 28. According to this, the inlet tank part 28 is made to function as a Helmholtz resonator pipe to effectively reduce the noise by pressure pulsation of the supercharger in the upstream from the core part 30. |
