Patent · US Active

Sound generator for an exhaust system

US9462363B2 · kind B2 · utility

1Cited by

4References

20Claims

0Family size

Assignee

Eberspächer Exhaust Technology GmbH · DE

Inventors

Georg Wirth · Kirchheim unter Teck, DE
Ralf Hölsch · Epfendorf, DE
Frank Sauter · Munderkingen, DE

Key dates

Filing date	May 2, 2014
Grant date	Oct 4, 2016
Priority date	—
Expiry date	Oct 23, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG10K2210/12822
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A sound generator (1) for an exhaust system (2) of an internal combustion engine of a motor vehicle (3) includes a housing (4), with an electroacoustic converter (5) having a membrane (6) separating a housing rear volume (9) from a housing front volume (10). A connection pipe (11) connects the front volume (10) of the sound generator (1) to an exhaust gas-carrying exhaust gas line (12) fluidically and acoustically. To reduce the risk of damage to the membrane (6), for example, in case the housing (4) becomes flooded, a pressure equalization line (15) is connected by a proximal end (16) to the housing (4) on the outside and is connected fluidically with the rear volume (9) through an opening (18) in the housing. A distal end (17) of the pressure equalization line (15) is at a spaced location from the housing (4).

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