| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that determination of ignition or misfire of a fuel added to an exhaust path has poor reliability due to disturbance.SOLUTION: An exhaust heating device 22 for heating exhaust led to an emission control device 26 includes a fuel addition valve 22a for adding a fuel to an exhaust path 23a on the upstream of the emission control device 26 and a glow plug 22b having, in the exhaust path 23a, a heating part for igniting the fuel added from the fuel addition valve 22a. It further includes a heating part temperature sensor 28 for acquiring a temperature of the heating part of the glow plug 22b, an exhaust temperature sensor 29 for acquiring an exhaust temperature on the upstream of the glow plug 22b, and an ignition/misfire determination part 15j which determines ignition or misfire of the fuel added from the fuel addition valve 22a to the exhaust path 23a based on information acquired by the heating part temperature sensor 28 and the exhaust temperature sensor 29. |
