| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust emission control method for a diesel engine, capable of supplying drive force having small delay to rapid increase requirement of the drive force of a vehicle, regenerating a filter while suppressing fuel economy deterioration in the hybrid vehicle by power regeneration even when a requirement load for shifting to a non-intake throttling area from an intake throttling area inside a power regeneration area in time of regeneration processing of the filter increases. <P>SOLUTION: This exhaust emission control device has: the intake throttling area that is an area on a low load side inside the power regeneration area, wherein intake throttling is performed such that an excess air ratio decreases according to decrease of a load; and the non-intake throttling area that is an area on a high load side inside the power regeneration area, wherein the intake throttling is not performed. An engine controller 31 includes: a processing procedure for performing a fuel injection such that the excess air ratio does not become a prescribed minimum excess air ratio or less when response delay of intake air is present in time of the increase of the requirement load such that it at least passes through the intake throttling area inside the power regeneration area in time of the regeneration processing of the filter; and a processing procedure for performing reduction correction of a power regeneration amount by a power generator 52 in a response delay section of the intake air. <P>COPYRIGHT: (C)2007,JPO&INPIT |
