Peugeot Citroen Automobiles Sa

Yvon Beauge

Piet Ameloot

Ali Chaouche

Mickael Gascoin

Djamal Medioun

François Garnier

Benoît Gobin

David Valette

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.

System for assisting regeneration of a storage/release NOx trap for a motor vehicle diesel engine

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.

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Rungis, France

Yvon Beauge