Exhaust muffler for exhaust system

Details Exhaust muffler for exhaust system Exhaust muffler for exhaust system

2011-01-25

2011-01-25

Enad, Elvin G (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S268000, C181S275000, C181S250000

Reexamination Certificate

active

07874401

ABSTRACT:
An exhaust muffler (1) is provided for an at least partly dual-flow exhaust system of an internal combustion engine, especially of a motor vehicle. The exhaust muffler has a housing (2), which encloses an interior space (3), with two exhaust pipes (6), through which exhaust gas can flow in parallel, and which are each led through the interior space (3), and which have a side opening (8) each within the housing (2). A neck body (9) connects the two side openings (8) of the exhaust pipes (6) in a communicating manner to form a Helmholtz resonator with the interior space (3) of the housing (2), which interior space (3) acts as a resonance volume (12). An embodiment, which has an especially compact design and can be manufactured at a low cost, is obtained when the neck body (9) has two plate-shaped longitudinal walls (11), which are in contact each with the two exhaust pipes (6) and which define a neck volume (10), into which the side openings (8) of the exhaust pipes (6) open, and which is open towards the resonance volume (12).

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Translation of JP 58-0939208, Translated May 4, 2010 by Akiko Smith, USPTO.

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