Gas silencing system with controlling sound attenuation

Details Gas silencing system with controlling sound attenuation Gas silencing system with controlling sound attenuation

1988-01-11

1990-04-03

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181228, 181236, 181239, 181265, 181272, 60292, 1374875, 137877, 251127, F01N 108

Patent

active

049132601

ABSTRACT:
A gas silencing system for controlled sound attenuation of the exhaust gas in a motor vehicle comprises a sound attenuation muffler for exhaust gases. The system also includes means providing a bypass passage for gas to flow around at least part of the muffler. Bypass control valve is provided to allow selective regulation of the flow of exhaust through the muffler and the pass-pipe. The bypass control valve is responsive to a modulated pressure signal controlled by the driver of the vehicle. The invention also includes circuits for visually indicating the amount of bypass flow and the sound level of gas leaving the system.

REFERENCES:
patent: 2625234 (1953-01-01), Fina
patent: 4665692 (1987-05-01), Inaba
patent: 4690163 (1987-09-01), Steinemann

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