| 摘要 |
PURPOSE: An exhaust gas purification system is provided to maintain stable NOx(Nitrogen Oxide) purification rate of DPF(Diesel Particulate Filter) because hydrocarbon is not excessively diminished by reacting DOC(Diesel Oxidation Catalyst) and exhaust gas constantly. CONSTITUTION: An exhaust gas purification system comprises a exhaust line(150), a catalyst unit, and a rear cover(120). The exhaust line let exhaust gas move the front to the rear thereof. The catalyst unit is installed in the exhaust line and comprises two units(115a,115b). The two units are arranged in both side of an inflow passage(105) at a fixed interval to reduce harmful materials of the exhaust gas. The rear cover closes outlet of the inflow passage and the exhaust gas from the inflow passage goes through the units. |
