| 摘要 |
PURPOSE: An SCR(Selective Catalyst Reduction) device for an exhaust system of a vehicle is provided to prevent the wall wetting of the inner wall of an exhaust pipe due to reducing agent since the moving direction of the reducing agent changes to be the same to the flow direction of exhaust gas and thus the collision of the reducing agent with the exhaust gas is maximized. CONSTITUTION: An SCR(Selective Catalyst Reduction) device(100) for an exhaust system of a vehicle comprises an injector(50) and a heating unit(60). The injector is obliquely mounted in the direction of exhaust gas stream from one side to the inside of an exhaust pipe(10) in front of the SCR catalyst. The injector sprays reducing agent to the inside of the exhaust pipe. A round protrusion(15) is formed on the exhaust pipe to match with the moving direction of the reducing agent sprayed by the injector. The heating unit is installed on the protrusion. The heating unit generates heat according to the temperature condition of exhaust gas.
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