Strategy for using exhaust stroke post-injection to elevate...

Details Strategy for using exhaust stroke post-injection to elevate... Strategy for using exhaust stroke post-injection to elevate...

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 3/025 (2006.01) F02D 41/04 (2006.01)

Patent

CA 2660478

An engine control system (28) causes combustion chambers (20) to be fueled during an engine cycle by a main injection (38) ending no later than substantially at the TDC between compression and expansion strokes of the cycle without any further injection of fuel during the expansion stroke, and then during the exhaust stroke of the cycle, by a post-injection (40) for elevating the temperature of the gases into a regeneration temperature range for regenerating a diesel particulate filter (36).

L'invention concerne un système de commande de moteur (28) qui entraîne le remplissage de chambres de combustion (20) avec du carburant pendant un cycle du moteur par une injection principale (38) qui ne se termine pas plus tard que sensiblement au point mort haut entre les courses de compression et d'expansion du cycle sans aucune injection supplémentaire de carburant pendant la course d'expansion, et ensuite, pendant la course d'échappement du cycle, par une post-injection (40) pour élever la température des gaz dans une plage de températures de régénération pour régénérer un filtre à particules diesel (36).

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