PAGE 10 — DEF TANK REPLENISHMENT SYSTEM • OPERATION MANUAL — REV. #0 (09/11/20)
SYSTEM OVERVIEW
Figure 3. System Overview
NI WATER
TO ATMOSPHERE
SELECTIVE
CATALYTIC REDUCTION
(SRC)
DIESEL PARTICULATE
FILTER (DPF)
DIESEL
ENGINE
COOLING
SYSTEM
ENGINE
EXHAUST OUT
DOSING
CONTROL
UNIT
DEF
TANK
DEF IS INJECTED
INTO THE
EXHAUST SYSTEM
NH
3
N
2
H
2
O
ENGINE EXHAUST EMITS
HARMFUL NITROGEN OXIDES (NO )
X
AND PARTICULATE MATTER (PM)
DPF FILTER CAPTURES SOOT TO
BURN DURING REGENERATION PROCESS
AMMONIA (NH ) AND
3
NITROGEN OXIDES (N0 )
X
REACT IN THE CATALYST
TO FORM NITROGEN AND WATER