Noise attenuating device

Details Noise attenuating device Noise attenuating device

1988-12-20

1990-01-09

Hart, Douglas

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181273, 181276, F01N 102

Patent

active

048921688

ABSTRACT:
A resonator used in an exhaust system of an automotive internal combustion engine. The resonator defines therein a resonance chamber and provided with an exhaust gas inlet tube through which exhaust gas is introduced into the resonator. An exhaust gas outlet tube is provided so that exhaust gas is discharged out of the resonator through the outlet tube. The inside ends of the inlet and outlet tubes are connected with a tuning tube respectively at positions which are opposite to each other with respect to the axis of the tuning tube. The opposite ends of the tuning tube are opened to the resonance chamber. The inner diameter of the tuning tube is larger than that of the inlet tube and that of the outlet tube, thereby greatly improving noise attenuating effects under resonance as compared with conventional resonators.

REFERENCES:
patent: 2765044 (1956-10-01), Hatte
patent: 4415059 (1983-11-01), Hayashi

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