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:
Jul. 22, 2014
Filed:
Mar. 04, 2009
Christian Post, Stuttgart, DE;
Andreas Nagel, Kornwestheim, DE;
Christian Post, Stuttgart, DE;
Andreas Nagel, Kornwestheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for operating an internal combustion engine is proposed, in whose exhaust gas zone a particle filter is disposed, which is cyclically loaded with particles and thermally regenerated, as well as an apparatus for the implementation of the method, which prevents thermal overload of the particle filter after turning off the internal combustion engine. A test is made when the internal combustion engine is turned off to determine whether an exothermal reaction takes place. Provided that an exothermal reaction takes place in the particle filter, a butterfly valve is closed, which prevents exhaust gas flow through the particle filter and, if the circumstances arise, a resulting oxygenation ingress in the particle filter.