DEF FLUID INJECTION SYSTEM - MAIN COMPONENTS
- Dosing Control Unit (DCU box): this device
supplies DEF fluid to the injector. The amount
GB
supplied is regulated by the electronic engine
management system. The unit consists of:
- Pump (A)
- Filter (B)
- DEF tank: contains the DEF fluid. It consists
of:
- Filling plug (usually blue)
- Internal filter
- DEF fluid level sensor
- DEF fluid temperature sensor
- DEF fluid quality sensor
- DEF fluid supply lines:
The supply lines are normally supplied by
the manufacturer of the vehicle in which
the engine is installed and approved by VM
MOTORI FCA ITALY.
- DEF injector:
it injects the DEF fluid towards the SCR
catalyst using a mixer that
fluid distribution.
A: DEF fluid inlet
B: Engine coolant inlet
C: Engine coolant outlet
D: Electric connector
English
allows an optimal
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R756EU6C
A
B
C
B
A
D
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