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:
May. 22, 2007
Filed:
Oct. 02, 2003
Yvon Beauge, Rungis, FR;
Ali Chaouche, Paris, FR;
Djamal Medioun, Colombes, FR;
Piet Ameloot, Neuilly sur Seine, FR;
Mickael Gascoin, Colombes, FR;
Yvon Beauge, Rungis, FR;
Ali Chaouche, Paris, FR;
Djamal Medioun, Colombes, FR;
Piet Ameloot, Neuilly sur Seine, FR;
Mickael Gascoin, Colombes, FR;
Peugeot Citroen Automobiles SA, Velizy-Villacoublay, FR;
Abstract
This system for assisting regeneration of a storage/release NOtrap integrated into an exhaust system () of a motor vehicle diesel engine () is characterized in that it includes means () for injecting fuel into the cylinders of the engine () in the form of pilot injections and main injections and means () for controlling the injection means () to switch the engine () periodically from a standard mode of operation using a lean mixture and pilot injection and main injection, in which NOare stored in the trap (), to a regeneration mode of operation using a rich mixture, with at least two pilot or main injections depending on the engine load, in which NO, are released from the trap () and the trap is regenerated.