| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust emission control device for actualizing good exhaust gas purifying treatment with an exhaust gas purifying catalyst by giving quick temperature rise to the exhaust gas purifying catalyst or increasing the amount of unburnt HC to be exhausted from a combustion chamber. <P>SOLUTION: The exhaust gas purifying catalyst 13 having an oxidative function is arranged in an engine exhaust passage, and a small oxidation catalyst 14 and a fuel supply valve for supplying fuel to the small oxidation catalyst 14 are arranged in the engine exhaust passage on the upstream side of the exhaust gas purifying catalyst 13. When reformed fuel flowing out of the small oxidation catalyst 14 is used for giving temperature rise to the exhaust gas purifying catalyst 13, the temperature of exhaust gas to be exhausted from the combustion chamber 2 is increased or the amount of unburnt HC to be exhausted from the combustion chamber 2 is increased. <P>COPYRIGHT: (C)2009,JPO&INPIT |
