| 摘要 |
<p>A system for purifying an exhaust gas and an exhaust system having the same while preventing degradation of a selective reduction catalyst may include an exhaust pipe (20) connected to an engine (10), the exhaust gas generated at the engine (10) passing through the exhaust pipe (20), a particulate filter (50) mounted on the exhaust pipe (20), coated with a selective reduction catalyst adapted to reduce nitrogen oxides contained in the exhaust gas by an injection of a reducing agent, and adapted to trap particulate matters contained in the exhaust gas, and one or more injectors (60) adapted to inject the reducing agent and/or an oxygen storage capacity material together or separately into the exhaust gas passing through the exhaust pipe (20).</p> |
