Control method for an exhaust gas purification system and an exhaust gas purification system

摘要

When an engine cooling water temperature (Tw) detected by a cooling water temperature detection means ( 37 C) exceeds a predetermined judgment water temperatures (Tw 1 and Tw 2 ) during the forced regeneration control of a filter using exhaust gas temperature raising means ( 351 C), the actuation of the exhaust gas temperature raising means ( 351 C) is interrupted. Thereby, in the case of the exhaust gas purification system having a DPF apparatus ( 13 ), it is possible to prevent a water temperature meter in a driver seat from abnormally rising during the forced regeneration of a DPF ( 13 b) and to prevent a driver from taking the abnormal rise of the water temperature meter for an engine trouble.