Patent ID: 8256210

Claim:
A system comprising: a controller programmed to command engine cylinder fuel injection according to a base mode, a deNOx mode, a deSOx mode, and a deSoot mode; wherein the base mode includes commands for a base mode pilot injection, a base mode main injection, and a base mode post injection, the deSoot mode includes commands for a deSoot mode main injection and one or more deSoot mode post injections, the deSOx mode includes commands for a deSOx mode main injection and one or more deSOx mode post injections, the amount of fueling commanded by the one or more deSoot mode post injections is greater than the amount of fueling commanded by the one or more deSOx mode post injections, and the commanded timing of the deSOx mode main injection is delayed relative to the commanded timing of the deSoot mode main injection.