Patent · US Active

Active muffler

US7891463B2 · kind B2 · utility

5Cited by

21References

24Claims

0Family size

Assignee

J. Eberspaecher GmbH & Co. KG · DE

Inventors

Jan Krüger · Centurion, ZA
Frank Castor · Stuttgart, DE
Manfred Muller · Wuppertal, DE
Georg Wirth · Kirchheim unter Teck, DE

Key dates

Filing date	Apr 9, 2009
Grant date	Feb 22, 2011
Priority date	—
Expiry date	Apr 9, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16L55/0333
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

The present invention to an active muffler for an exhaust gas system of an internal combustion engine, in particular in a motor vehicle, includes a multi-shell housing having a pot-shaped top shell and a pot-shaped bottom shell, a funnel-shaped sound conducting body, which is inserted into the bottom shell and has a connection passing through the bottom shell and out of the housing, a loudspeaker, which is situated in the top shell and is attached to a flange section of the sound conducting body at a distance from the connection, such that a free inside cross section of the sound conducting body surrounded by the flange section is closed with an airtight seal, and a bypass through which an interior space of the top shell is connected to an interior space of the bottom shell so they communicate.

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