| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an exhaust emission control device that can suppress an excessive increase in internal temperature of a DPF without impairing fuel economy and operability.SOLUTION: In the exhaust emission control device, an ECU operates a recirculation device to recirculate a downstream exhaust gas of the DPF to upstream of the DPF (step S6) based on the condition that a flow rate of an exhaust gas of an engine becomes lower than a specified flow rate (step S4) while executing forcible regeneration where PM deposited in the DPF is burned to remove (step S1).</p> |
