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. 15, 2008
Filed:
Dec. 12, 2003
Ekkehard Pott, Gifhorn, DE;
Kai Philipp, Lagesbuettel, DE;
Eric Bree, Wolfsburg, DE;
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
Abstract
The invention is directed to a method for controlling the temperature of at least one catalyst arranged in an exhaust gas cleaning system () of a lean-runnable multi-cylinder engine (), wherein energy is introduced into the exhaust gas cleaning system () by a lambda split, and to a corresponding multicylinder engine (). It is provided that the introduction of energy is limited depending on at least one of the parameters catalyst temperature, exhaust gas temperature and exhaust gas mass flow rate, and/or at least one of the parameters change of the catalyst temperature, change of the exhaust gas temperature and change of the exhaust gas mass flow rate, or at least one of the parameters rate of change of the catalyst temperature, rate of change of the exhaust gas temperature and rate of change of the exhaust gas mass flow rate.