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. 30, 2005
Filed:
Feb. 25, 2003
Klaus Binder, Deizisau, DE;
Peter Ebel, Braunsbach, DE;
Gerhard Fraenkle, Remshalden-Grunbach, DE;
Alexander Funk, Altbach, DE;
Klaus-juergen Marquardt, Remshalden, DE;
Ansgar Schaefer, Ehningen, DE;
Georg Huthwohl, Soest, DE;
Bernd Maurer, Balve, DE;
Klaus Binder, Deizisau, DE;
Peter Ebel, Braunsbach, DE;
Gerhard Fraenkle, Remshalden-Grunbach, DE;
Alexander Funk, Altbach, DE;
Klaus-Juergen Marquardt, Remshalden, DE;
Ansgar Schaefer, Ehningen, DE;
Georg Huthwohl, Soest, DE;
Bernd Maurer, Balve, DE;
DaimlerChrysler AG, Stuttgart, DE;
PURem Abgassysteme GmbH & Co. KG, Menden, DE;
Abstract
A device for exhaust-gas purification utilizes reduction of nitrogen oxides which are present in the exhaust gas from internal combustion engines by way of gaseous ammonia with an SCR catalytic converter. The functions of the device are monitored with regard to their line paths with connections, valves and sensors by referring to these elements themselves using suitable control circuitry via the evaluation and control unit.