Chapter II Technical Information of Engine
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
25
4. Specifications of Main Parts of Fuel Supply System
For the specifications of main parts of GW4D20/GW4D20B turbocharged diesel engine fuel supply
system, see Table 2-5-5.
Table 2-5-5 Specifications of Main Parts of GW4D20/GW4D20B Turbocharged Diesel Engine Fuel
Supply System
Parts Name
Installation Position
Specification
High Pressure Fuel
Pump
Rear end face of water
pump housing
DELPHI
Double plunger,
equipped with fan blade
pump, IMV
BOSCH
Triplex plunger pump
Xin Feng
Double plunger pump
Fuel injector
Top surface of cylinder
head
DELPHI
7-hole
BOSCH
6-hole
Xin Feng
6-hole
High pressure fuel rail
Left side of cylinder
body
DELPHI
Max. fuel supply
pressure 1600 bar
BOSCH
Max. fuel supply
pressure 1600 bar
Xin Feng
Max. fuel supply
pressure 1600 bar
Electronic Control Unit
(ECU)
Inside the engine hood
Working voltage 12 V
Rotation Speed Sensor
Upper cylinder body
Working clearance 0.5 ~ 1.5 mm
Camshaft Phase
Sensor
Cylinder head cover
Working clearance 0.5~1.5mm
Water Temperature
Sensor
Cylinder head
Rated voltage: 5 V ± 0.15 V, NTC-type, rated
resistance: 2.5 kΩ ± 0.6% at 20
℃
and 0.186 kΩ ±
2% at 100
℃
Air Intake Pressure
Sensor
Air intake manifold
DS-S3
Heater Plug
Lateral surface of
cylinder head
Heated to 800
℃
in 8 s
EGR Valve
Rear end of air intake
manifold
Vacuum type
Fuel filter
Frame
Equipped with manual fuel delivery pump,
fuel-water separator, diesel heater (flow rate: 125
L/h), particle filterability of paper filter core:
＞
15
μm100%, 3~5 μm 94.5%, replacement period of
filter core: every 25000 ~ 30000 km of driving
range
Note.
①
1 bar=10
5
Pa.
