Noise suppressing muffler

Details Noise suppressing muffler Noise suppressing muffler

1995-12-26

1998-03-03

Lee, Eddie C.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181253, 181254, F01N 100

Patent

active

057238278

ABSTRACT:
A plurality of chambers are partitioned in a muffler by a baffle board. The muffler is provided with an exhaust gas passage for discharging exhaust gas outside the muffler via these chambers and a valve that bypasses a part of the exhaust passage. This valve opens according to the exhaust gas pressure. Also provided are a mechanism for pushing the valve in a closing direction, and a mechanism for damping the shock when the valve closes. Thus, valve closing noise is suppressed, and exhaust gas noise is further suppressed.

REFERENCES:
patent: 3969895 (1976-07-01), Krizman
patent: 4079808 (1978-03-01), Mizuno et al.
patent: 4179883 (1979-12-01), Nishiyama et al.
patent: 4264344 (1981-04-01), Ludecke et al.
patent: 4484659 (1984-11-01), Buchwalder
patent: 5208429 (1993-05-01), Field
patent: 5435347 (1995-07-01), Gillingham
patent: 5452578 (1995-09-01), Barber
patent: 5614699 (1997-03-01), Yashiro et al.

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