| abstract |
An object of the present invention is to suppress an excessive increase in the temperature of exhaust gas, a post-treatment catalyst, or a filter during regeneration of a post-treatment catalyst or a filter while suppressing a decrease in fuel consumption efficiency and a deterioration of exhaust components. An exhaust passage (202) for guiding exhaust of an engine (10), an exhaust control device (76) disposed along the exhaust passage (202), connected to the exhaust passage (202), and A reductant storage device (74) configured to store a reductant, and a controller (12) comprising a memory (106, 109, 110) and a processor (102); 110) for supplying a reducing agent upstream of the exhaust control device (76) in the exhaust system when the temperature of the exhaust gas exceeds a threshold during regeneration of the exhaust control device (76) A system comprising instructions executable by (102). [Selection] Figure 1 |