A SYSTEM OF INITIATING COMBUSTION OF PARTICULATE MATTERS IN THE PM FILTER AND ADJUSTING OXYGEN LEVELS OF THE EXHAUST GAS

摘要

A system comprises a particulate matter (PM) filter (34) that comprises an upstream end for receiving exhaust gas (250), a downstream end and at least one portion. A control module (44) initiates combustion of PM in the PM filter (34) using as heater (35) and selectively adjusts oxygen levels of the exhaust gas (250) to adjust a temperature of combustion adjacent to the at least one portion of the PM filter (34). A method comprises providing a particulate matter (PM) filter (34) that comprises an upstream end for receiving exhaust gas (250), a downstream end and at least one portion; initiating combustion of PM in the PM filter using a heater (35); selectively adjusting oxygen levels of the exhaust gas to adjust a temperature of combustion adjacent to the at least one portion of the PM filter (34).