Engine exhaust emissions treatment system

A method of operating an engine system that includes a compression ignition diesel engine with an exhaust outlet fluidly connected with an aftertreatment system that terminates at a tail pipe;

• a source of diesel fuel fluidly connected to the engine;
• the aftertreatment system including a particle trap fluidly positioned between the engine and the tailpipe, and a SCR catalyst fluidly positioned on the particle trap or between the particle trap and the engine;
• wherein the SCR catalyst is a sulfur tolerant catalyst;
• a non-thermal particle trap regeneration system that includes a valve fluidly positioned between a particulate volume and an inlet of the particle trap;
• and a reductant system with a dozer positioned to deliver a reductant into the aftertreatment system upstream from the SCR catalyst, the method comprising the steps of:
• rapidly heating the SCR catalyst faster than the particle trap immediately after engine start up;
• catalyzing a reduction reaction of NOx with the reductant with the sulfur tolerant SCR catalyst;
• trapping particulate matter generated by burning diesel fuel in the compression ignition diesel engine in the particle trap;
• non-thermally regenerating the particle trap by moving the particulate matter from within the particle trap, out through the inlet of the particle trap, through the valve and into the particulate settling volume.