| 摘要 |
PURPOSE: An exhaust gas purification device and an exhaust system with the same are provided to prevent thermal deterioration in selective catalytic reduction by lowering regeneration temperature for a soot filter. CONSTITUTION: An exhaust gas purification device comprises an exhaust pipe(20), a soot filter(50), and a first injector(60). The exhaust pipe is connected to an engine, and exhaust gas generated from the engine flows into the exhaust pipe. The soot filter is mounted on the exhaust pipe, and selective catalytic reduction is coated on the soot filter to collect particulate matters contained in the exhaust gas. The first injector injects a reducing agent to the exhaust gas. The reducing agent contains oxygen-storage materials. The reducing agent is urea or ammonia. The oxygen-storage materials are cerium or iron. |
