Patent ID: 8453432
Filing Date: 2013-06-04
Classification: F01N,F02D,Y02T

Abstract:
1. A control method for an exhaust emission purification system, comprising: providing an exhaust gas purification device with a diesel particulate filter in an exhaust gas passage of an internal combustion engine mounted on a vehicle, and a power take-off device; determining whether a forced regeneration is required or not; when it is determined that the forced regeneration is required, determining whether an idling operation state is equal to or greater than a predetermined judgment time or not; when it is determined that the idling operation state is equal to or greater than the predetermined judgment time, determining whether an exhaust gas temperature is lower than a predetermined judgment temperature or not; and when it is determined that the exhaust gas temperature is equal to or greater than the predetermined judgment temperature, carrying out a particulate matter combustion removal control executing a post injection control, but without carrying out a multistage delay injection control, independent of the power take-off device being in an operating state.