| 摘要 |
PURPOSE: A connection pipe for an air intake device of a vehicle is provided to prevent noise generated in a combustion chamber of an engine from being flowed outside through an intake system. CONSTITUTION: A connection pipe for an air intake device comprises an intake port chamber sucking outer air, an air cleaner purifying the air sucked via the intake port chamber, an intake manifold uniformly supplying the air purified by the air cleaner to each cylinder in an engine with a regular volume, the connection pipe(60) which connects the intake port chamber, the air cleaner, and the intake manifold and which the air is flowed through, and a noise excluding diaphragm(70) installed in the connection pipe in a prescribed incline angle to the air intake direction to make some of noise reflected to the engine or converted into heat energy.
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