Patent · US Active

Muffler for an exhaust gas system

US7506723B2 · kind B2 · utility

16Cited by

19References

25Claims

0Family size

Assignee

J. Eberspaecher GmbH & Co. KG · DE

Inventors

Micha Hoerr · Altbach, DE
Michael Pommerer · Uhingen, DE

Key dates

Filing date	Aug 31, 2006
Grant date	Mar 24, 2009
Priority date	—
Expiry date	Apr 13, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N2470/16
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

The invention relates to a muffler for an exhaust system of an internal combustion engine, consisting a housing having at least one exhaust inlet and at least one exhaust outlet and having at least two pipes at the inlet end or at the outlet end, at least one of which is switchable by a control device at least between an open state and a closed state and is acoustically coupled to a silencer system, such that the silencer system is active when the switchable pipe is opened as well as when it is closed and has a different damping characteristic when the switchable pipe is opened than when the switchable pipe is closed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.