| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a DPF system that can prevent the defective catalyst activation of a DOC when forcibly regenerating a DPF by exhaust pipe injection. <P>SOLUTION: In the DPF system 10 which injects fuel from an exhaust pipe injector 24, oxidizes and burns the fuel by using the DOC 23, and burns and removes PMs deposited on the DPF 25, the DPF system comprises: a temperature sensor 27 which is arranged at an outlet side of the DOC 23, and detects a DOC outlet temperature at the DPF forcible regeneration; and an accidental fire determination means 29 into which the DOC outlet temperature is input, and which determines whether the DOC 23 maintains catalyst activation from a temperature lowering amount per unit time of the DOC outlet temperature. <P>COPYRIGHT: (C)2012,JPO&INPIT |
