The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2014
Filed:
Dec. 21, 2012
J. Eberspächer Gmbh & Co. KG, Esslingen, DE;
Felix Neumann, Esslingen, DE;
Viktor Koch, Göppingen, DE;
Eberspächer Exhaust Technology GmbH & Co. KG, Neunkirchen, DE;
Abstract
An exhaust system () for an internal combustion engine, in particular of a motor vehicle, has at least one exhaust tract (), which has at least one exhaust pipe () which conducts exhaust gas, and has at least one active silencer (). The active silencer () has a silencer housing () and at least one electro-acoustic converter () which is arranged in the silencer housing () and at least one connection pipe (), which connects the silencer housing () fluidically to the exhaust pipe (). The thermal loading of the converter () is reduced with a sound propagation path () formed for the propagation of airborne noise in the connection pipe () being impermeable to thermal radiation () emanating from the exhaust gas in the exhaust pipe ().