| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of providing high NOx reduction rate from a relatively low temperature zone. <P>SOLUTION: This device is provided with NOx storage reducing catalyst 5 provided in a middle of an exhaust pipe 4 leading exhaust gas from a diesel engine 1, a control device 14 controlling fuel injection to each cylinder of the diesel engine 1 to remain suitable amount of unburnt fuel as reducing agent to the NOx storage reducing catalyst 5, and a plasma generation device 7 performing electric discharge in exhaust gas 3 in an upstream of the NOx storage reducing catalyst and decomposing unburnt fuel into H<SB>2</SB>and CO. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
