Fig 4-12 Fuel system with ICU (generic and simplified)
57
Cyl. 1 Cyl. 2 Cyl. 3 Cyl. 4 Cyl. n
60 50 49
52
51
PLANT
ENGINE
59
67
ENGINE
PLANT
001 002 004 005003
007008009
006
Legend
001 Pressure control valve 006 Injection valve
002 Relief valve 007 Supply unit
003 Injection control unit (ICU) 008 Fuel pump
004 Fuel rail 009 Pressure retaining valve
005 Rail unit
X92-B
AA00-0000-00AAA-043E-A
Operation Manual Fuel system
Winterthur Gas & Diesel Ltd.
- 91 - Issue 002 2021-11