UREA SCR SYSTEM DIAGRAM
10 STRUCTURE AND FUNCTION
UREA SCR SYSTEM DIAGRAM 1
5
4
14
2
12
5 6 7
3
15 14
15 16 22
13 9
10
A
B
19
17
20 23
8 18
11
21 24 25
33
26
31
28
A B
32 35 36
29
34
30 27 A4P16365
A: Coolant inlet
B: Coolant outlet
1: Mass air flow and temperature sensor
19: SCR temperature sensor
2: Engine
20: SCR outlet temperature sensor
3: Engine controller
21: SCR temperature sensor controller
4: Exhaust throttle valve
22: SCR outlet NOx sensor
5: KDOC
23: SCR outlet NOx sensor controller
6: KDOC unit
24: Smart sensor
7: Turbocharger outlet NOx sensor
25: Ambient temperature sensor
8: Turbocharger outlet NOx sensor controller
26: Engine room temperature sensor
9: KDOC inlet temperature sensor
27: AdBlue/DEF system
10: KDOC outlet temperature sensor
28: AdBlue/DEF tank heating valve
11: KDOC temperature sensor controller
29: AdBlue/DEF tank
12: AdBlue/DEF mixing tube
30: AdBlue/DEF tank sensor
13: AdBlue/DEF injector
31: AdBlue/DEF suction line
14: SCR assembly
32: AdBlue/DEF return line
15: Upstream SCR catalyst
33: AdBlue/DEF pressure line
16: Downstream SCR catalyst and ammonia oxidation catalyst (integrated type)
34: AdBlue/DEF pump
17: Ammonia sensor
36: Machine monitor
35: AdBlue/DEF line heater relay
18: Ammonia sensor controller
10-12
95LE-7 SERIES
