| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a DPF regeneration control device that reduces injection of unnecessary added fuel to a combustion chamber to prevent deterioration in fuel economy and an occurrence of oil dilution, by suspending running time-automatic forcible regeneration control for a DPF in a mode in which regeneration does not progress smoothly. <P>SOLUTION: The DPF regeneration control device is provided with forcible regeneration start means 40 for automatically starting DPF regeneration while a vehicle is running, based on the amount of PM deposits, and includes fuel integration means 56 for integrating the amount of fuel supplied to the DPF after an oxidation catalyst reaches a predetermined temperature after activation, following the start of the DPF regeneration, oxygen-mass integration means 54 for calculating an integration value of an oxygen mass flow supplied to the DPF, PM-combustion calculation means 52 for calculating the amount of combustion of the PM deposits from the oxygen-mass integration value supplied to the DPF, and regeneration suspension control means 57 for suspending the running time-automatic forcible regeneration of the DPF when the calculated PM combustion amount is below a threshold value thereof relative to the amount of the supplied fuel that is calculated by the fuel integration means. <P>COPYRIGHT: (C)2010,JPO&INPIT |
