| 摘要 |
[Problems] To urge the repair of a SCR device to achieve an appropriate maintenance of the SCR device, when an abnormality occurs in the SCR device [Means for solving the Problems] When an abnormality occurred in a SCR device is detected, the output of an engine is restricted. To this end, in one embodiment, at the time of an abnormality occurrence, a map adopted for calculating a fuel injection quantity is switched from that for a normal time (S407). Further, as the abnormality to be detected, the clogging of an injection nozzle, the dilution of urea water stored in a tank, or the like is adopted. |
