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:
Feb. 27, 2007
Filed:
Oct. 19, 2002
Johannes Schaller, Leonberg, DE;
Johannes Schaller, Leonberg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method and a system for regenerating, in particular desulfating, storage catalysts in the cleaning of exhaust gas from internal combustion engines. During the regeneration phase the combustion is controlled, initially inside the engine, by a control unit in such a way that the air ratio λ in the exhaust gas is lowered to a first value λ, and subsequently a feed device for the reducing agent is controlled by the control unit in such a way that the air ratio λ is set at a second, lower value λ<1. This ensures that the temperatures occurring at the entry side of the storage catalyst are sufficient for effective desulfation without damaging the storage catalyst.