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SCANIA industrial engines sCr system eu stage iiiB SCR (Selective Catalytic Reduction) technology is used on Scania’s engines X content in the exhaust gases. A chemical process is started by injecting reductant, a urea and water X in the best possible way. Scania is making use of a system that is carefully developed and The reductant tank holds 38 or 60 litres and is heated by the engine’s Mechanical system Standard Optional 1 Reductant tank and pump module 38 l 60 l 2 Reductant fl uid return line 2 m 3.5 m 3 Coolant valve – 4 Reductant pressure line 2 m 3.5 m 5 Coolant hose for tank and pump – – 6 Evaporator module / Hydrolysis – 7 NO X sensor with control unit – 8 SCR catalyst – 9 Temperature sensor – 10 Coolant hose, return from tank and – – Mechanical system Electric system Electric system Standard Optional 1 Customer interface, SCR system – 2 Pipe network between engine and 3 m 6 m 3 Electrical interface, SCR system – 4 Temperature sensor electrical cable 3 m 6 m, 9 m 5 Reductant doser electrical cable 3 m 6 m 6 NO X sensor electrical cable 3 m 6 m The principle for Scania SCR system This specifi cation may be revised without notice. 6 1 9 2 8 3 7 5 10 4 1:7058 3 1 2 6 5 4 1:7059 |