| 摘要 |
A system for purifying an exhaust gas of a diesel engine and a method of the same are provided to clean the toxic material at a relatively low temperature and increase the purification performance of the exhaust gas by placing the smoke filter. A system(100) for purifying an exhaust gas of a diesel engine is composed of a first reactor(120) arranged to oxidize HC, CO, NO, or particle material in the exhaust gas; a second reactor(140) collecting the particle material of the exhaust gas passing through the first reactor at a smoke filter, oxidizing the collected particle material, and regenerating the smoke filter; a third reactor(160) installed with a light source, a light catalyst responding to the light source, and an absorbent to absorb NOx of the exhaust gas passing through the second reactor and to remove the NOx through the reducing reaction; and a controller(200) controlling the light strength of the light source according to the concentration of the exhaust gas.
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