초록 ▼

The present invention provides, with reference to the figure, a noise attenuator for an induction system or an exhaust system comprising a housing (10) having a gas inlet (13), a gas outlet (11) and a first gas flow passage (12) inside the housing connecting the gas inlet (13) to the gas outlet (11)

The present invention provides, with reference to the figure, a noise attenuator for an induction system or an exhaust system comprising a housing (10) having a gas inlet (13), a gas outlet (11) and a first gas flow passage (12) inside the housing connecting the gas inlet (13) to the gas outlet (11). A quarter wave resonator tube (14; 16; 23; 29) is provided inside the housing (10) which opens on to the first gas flow passage. The noise attenuator is an integer which can be installed as a single integrated unit in the induction system or the exhaust system. A Helmholtz resonator (21; 27) is provided inside the housing (10) which opens on to the first gas flow passage (12).

대표청구항 ▼

[ We claim:] [1.] A noise attenuator for an induction system or an exhaust system comprising a housing having:a gas inlet,a gas outlet,a first gas flow passage inside the housing connecting the gas inlet to the gas outlet, anda quarter wave resonator tube inside the housing which opens on to the fir

[ We claim:] [1.] A noise attenuator for an induction system or an exhaust system comprising a housing having:a gas inlet,a gas outlet,a first gas flow passage inside the housing connecting the gas inlet to the gas outlet, anda quarter wave resonator tube inside the housing which opens on to the first gas flow passage,characterised in that there is additionally provided inside the housing a Helmholtz resonator which opens on to the first gas flow passage whereby the Helmholtz resonator and the quarter wave resonator tube are together integrated in a single unit and the single unit is connectable to and deconnectable from the induction system or the exhaust system.