| 摘要 |
An internal combustion engine equipped with an exhaust purifier capable of efficient reduction and depollution of NOx held on NOx catalyst, capable of reduction and depollution of a satisfactory amount of NOx and capable of regenerating the NOx catalyst in wide range. In the release, reduction and depollution treatments of NOx held on NOx catalyst (33), light oil is injected through addition valve (37) so as to feed light oil together with exhaust to the NOx catalyst (33), and after the sticking of light oil in liquid droplet form to the whole area of NOx catalyst (33), the flow rate of exhaust is decreased.
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