| 摘要 |
A diesel particulate defuser (DPD) is connected to an exhaust pipe of a diesel engine, an exhaust gas temperature during automatic regeneration of the DPD is detected, and the difference between the detected exhaust gas temperature and a target regeneration temperature is determined. In a case where an exhaust pipe injection amount is PID controlled based on this difference, when an exhaust brake valve is closed during traveling automatic regeneration, the exhaust pipe injection is stopped and calculation of an integral control term by the PID control is continued as long as the exhaust valve brake valve is closed, and when the exhaust brake valve is opened, the integral control term that has been continuously calculated is taken as an initial operation amount.
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