Automotive exhaust silencer system with variable damping...

Details Automotive exhaust silencer system with variable damping... Automotive exhaust silencer system with variable damping...

2006-05-09

2006-05-09

Fletcher, Marlon T. (Department: 2837)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S257000, C181S268000, C181S272000, C181S253000, C181S239000, C123S184530

Reexamination Certificate

active

07040451

ABSTRACT:
In a muffler device of a motor vehicle, with a plurality of mufflers and an actuator for changing the flow resistance to the exhaust gases flowing through the mufflers, in order to change the damping characteristic, the actuator is provided in a pipe branch having an inlet and two outlets, each outlet being connected via a pipe to a muffler, and the throughflow cross section of the inlet being variable by means of the actuator.

REFERENCES:
patent: 2072372 (1937-03-01), Kingsley
patent: 4866933 (1989-09-01), Kao
patent: 4913260 (1990-04-01), Fallon
patent: 4926636 (1990-05-01), Tadokoro et al.
patent: 5821474 (1998-10-01), Olszok et al.
patent: 6178745 (2001-01-01), Meusen
patent: 195 03 322 (1995-02-01), None
patent: 198 37 097 (1998-08-01), None
patent: PCT/NL97/00204 (1997-04-01), None

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