Patent ID: 8999048
Filing Date: 2015-04-07
Classification: F01N,F02D,F02M,F02N,Y02T

Abstract:
1. An exhaust gas purifying apparatus for a diesel engine, the diesel engine conducting idling stop to automatically stop the diesel engine in a case where a predetermined idling stop condition is fulfilled, the exhaust gas purifying apparatus comprising: a diesel particulate filter (DPF) disposed in an exhaust system in the diesel engine to trap a particulate matter in exhaust gas discharged from the diesel engine; and a controller configured to control: a DPF regeneration section to execute regeneration of the DPF by raising a temperature of the DPF in a case where a predetermined DPF regeneration condition is fulfilled; a DPF regeneration interruption and restart section to interrupt the regeneration of the DPF, to execute idling stop, to automatically restart the diesel engine and then to restart the regeneration of the DPF; and an idling stop delay section to delay execution of the idling stop until a temperature of the DPF at a time at which the idling stop is started becomes not less than a temperature of the DPF at a time at which shifting to an idling operation is carried out even in a case where the predetermined idling stop condition is fulfilled, when shifting to the idling operation is carried out during the regeneration of the DPF.