| 摘要 |
PURPOSE: A structure of a main resonator is provided to improve the efficiency of an engine by reducing vacuum pressure and to reduce noise in the whole area of a main resonator. CONSTITUTION: External air is introduced into an air duct(10) fixed to an engine room(90), then into a main resonator(30) through a main connection duct(20) connected to a connection unit(30a) of an inlet. The introduced air is transferred to an air cleaner(50) through a connection unit(30b) of an outlet after reducing noise through a combination duct(31) installed in the main resonator. That is, the air introduced into the main resonator reduces vacuum pressure with the combination duct connected with the connection units(30a,30b) in the resonator to improve the performance of an engine and to reduce noise with plural holes(31a) formed on the combination duct.
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