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:
Dec. 29, 2009
Filed:
Nov. 25, 2004
Aden Hodzic, Graz, AT;
Stefan Kerschbaumer, Graz, AT;
Urs Gerspach, Graz, AT;
Erich Schiefer, Graz, AT;
Aden Hodzic, Graz, AT;
Stefan Kerschbaumer, Graz, AT;
Urs Gerspach, Graz, AT;
Erich Schiefer, Graz, AT;
AVL List GmbH, Graz, AT;
Abstract
The invention relates to a measuring device (), preferably a test stand for engines and vehicles for analyzing exhaust gases of a combustion engine (), comprising at least one exhaust gas supply line (), which can be connected to the exhaust system of the combustion engine () and which supplies at least one measuring branch () each provided with a respective analysis unit () for determining exhaust gas constituents. According to the invention, a filter device (to) is provided in at least one cool measuring branch () upstream from the analysis unit () and/or between different components () of the analysis unit () and/or on the output side of at least one analysis unit () of one of the measuring branches (). This filter unit contains a filter material that is selective with regard to gaseous hydrocarbons, preferably a filter material selected from the group consisting of zeolites and/or silicates.