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:
Mar. 10, 2009
Filed:
Oct. 14, 2003
Ali Chaouche, Paris, FR;
Djamal Medioun, Colombes, FR;
Yvon Beauge, Rungis, FR;
Piet Ameloot, Neuilly sur Seine, FR;
Mickael Gascoin, Colombes, FR;
Ali Chaouche, Paris, FR;
Djamal Medioun, Colombes, FR;
Yvon Beauge, Rungis, FR;
Piet Ameloot, Neuilly sur Seine, FR;
Mickael Gascoin, Colombes, FR;
Peugeot Citron Automobiles SA, Velizy-Villacoublay, FR;
Abstract
A system for assisting regeneration of a storage/release NOx trap integrated in an exhaust line () of a motor vehicle diesel engine () is characterized in that it comprises gas admission means for admitting gas into the engine, means for injecting fuel () into the cylinders thereof in the form of at least pilot and main injections, and means for controlling () said gas admission and/or fuel injection means for periodically switching the engine () between a lean-mixture standard operating mode in which NOx is stored in the trap () and a rich-mixture regeneration operating mode, with at least two pilot injections () and one main injection (), in which NOx is released from the trap () and the trap is regenerated.