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:
Aug. 25, 2020
Filed:
Nov. 05, 2018
Eberspächer Exhaust Technology Gmbh & Co. KG, Neunkirchen, DE;
Sven Grötzinger, Nürtingen, DE;
Eberspächer Exhaust Technology GmbH & Co. KG, Neunkirchen, DE;
Abstract
A process for the analysis of the acoustic characteristic of an exhaust gas flap () for an exhaust system of an internal combustion engine, wherein the exhaust gas flap () includes a flap diaphragm (), which is adjustable in a flap body (). A measurement noise is applied to the exhaust gas flap (). A disturbing noises originating at the exhaust gas flap () is detected and a disturbing noise time course () is generated. A disturbing noise frequency course () is generated based on the disturbing noise time course (). The disturbing noise frequency course () is compared with a reference disturbing noise frequency course (). The acoustic quality of the exhaust gas flap () is evaluated based on the comparison.