| 摘要 |
An intake manifold includes a surge tank, a connection pipe and a membrane-type resonator. The surge tank distributes an intake air supplied through a throttle device into a combustion chamber of an engine. The connection pipe is disposed at an upstream side of the surge tank so as to be connected to the throttle device. The membrane-type resonator has a membrane for defining a chamber separated from the surge tank, and the membrane vibrates to be resonant with the intake air. The connection pipe and the chamber of the membrane-type resonator communicate with each other.
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