parts of the SCR system.
1
2
4
6
10
3
5
9
7
8
6
11
12
13
14
3
2
15
422 815
1. Reductant pump (optional).
2. Reductant pressure pipe.
3. Reductant return pipe.
4. Reductant tank (buffer tank).
5. Engine management unit.
6. NOx sensor with control unit.
7. Coolant pipe.
8. Exhaust routing valve.
9. Handle to bypass the SCR system.
10. Bypass pipe.
11. Evaporator.
12. Reductant doser.
13. Exhaust gas temperature sensor.
14. SCR catalytic converter.
15. Coolant pump for the exhaust routing valve (option).