robust burnt gas recirculation (egr) control to counteract the exhaust back pressure oscillation attributable to soot accumulation in a diesel particulate filter

摘要

ROBUST CONTROL OF BURNED GAS RECIRCULATION (EGR) TO NEUTRALIZE EXHAUST COUNTERPRESSION SWING ATTRIBUTABLE TO SOUL ACCUMULATION IN A DIESEL PARTICLE FILTER. Engine (10) using a method of neutralizing the effect of soot buildup on a diesel particulate filter (38) in a diesel engine discharge system (16) in controlling burnt gas recirculation through a recirculation system of burnt gas (40). Engine speed (N) and engine rated torque (TQI) data are processed to select from a map (62) a data value for the present volumetric burnt gas recirculation efficiency. The selected data value and certain other data, including data that accounts for the present soot accumulation in the diesel particulate filter, are processed to develop a data value indicative of the present total mass flow. The data value indicative of the present total mass flow and further data is processed to develop flow control data to control the flow of burnt gas through the burnt gas recirculation system.