Chapter 3 Fuel Injection Equipment
10. Test Bench Adjustment of VE Pump
10.
Test
Bench
Adjustment
of VE
Pump
i
4LHA
Series
i
* For adjustment specifications, refer to the
individual test standards.
Adjustment conditions:
Nozzle
Nozzle
holder
DKKC
Part No.
105780-0000
(NP-DN12SD12T)
DKKC
Part No.
105780-2080
(EF8511/9A)
Nozzle
opening
pressure
Injection
line
Test oil
Fuel
oil temperature
(fuel
tank)
Supply pressure
14.7MPa(150
kgf/cm
2
)
6x2-840 mm
SAE
Standard Test Oil
(SEAJ967d)
or ISO
4113 test oil
45
+5o
C
0.02 MPa(0.2 kgf/cm
2
)
0~80°c
150kg/cm
2
(1) Pre-supply pump
(2) Filter
(3) Regulator valve
inlet
(4) Accumulator
PI:
Test oil
inlet
pressure 0-0.1MPa(0-1 kgf/cm
2
)
P2:
Pump chamber pressure 0-1.47MPa(0-15 kgf/cm
2
)
P3:
Positive & Negative pressure;
Positive:
Boost compensator
0-0.2MPa(0-2 kgf/cm
2
)
Negative: Aneroid compensator
0-101kPa(0-76 cmHg)
(5) Nozzle opening pressure 14.7MPa
(150 kgf/cm
2
)
(6) Measuring cylinder for overflow fuel
volume
(7) Fuel
tank
(8) Overflow valve
(9) Thermometer(fuel
tank)
Fig.
23
TEST
BENCH
PIPING
DIAGRAM
FOR
PUMP
PERFORMANCE
TEST
3-1-52
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