| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust emission control method and exhaust emission control system for a diesel engine, capable of improving NOx purification efficiency and durability of an SCR catalyst.SOLUTION: Exhaust gas G of a diesel engine is passed through a DPF converter 4 for storing a DPF 3 at the front stage of which a DOC 2 is arranged, and to the exhaust gas G passed through the DPF converter 4, urea water atomized by an atomizer 9 and heated on the external surface of the DPF converter 4 is supplied as reductant. Consequently, NOx included in the exhaust gas G is purified with an SCR catalyst 5. |
