Isuzu NPR 4J Series - Injection Volume and Governor Performance Diagram

ENGINE FUEL 6C - 45
INJECTION VOLUME AND GOVERNOR PERFORMANCE DIAGRAM
Adjustment specification of injection
volume
Pump
rotation
rpm
Average
injection
quantity
mm
3
/ST
Uneven
amplitude
mm
3
/ST
Oil
temperature
°C
Remarks
500 (38.6) 48±2
700 34.9±2.5 50±2
1000 42.1±1.0 4.0 50±2 Standard
1450 44.5±2.5 50±2
1800 47.6±3.0 60±2
2100 12.9±3.0 4.0 52±2
390 6.7±3.0 2.0 48±2
100 60 - 100 48±2
Engine ; 4JB1
Injection pump assembly No. ; 8943616830 (104741-6410)
8943616850 (104741-6430)
Adjustment specification of timer and
pump case pressure
Timer piston
stroke mm
Air pressure
of pump
kPa (kg/cm
2
)
Solenoid timer Solenoid timer
Pump
rotation
rpm
ON OFF ON OFF
Standard
700 Over 0.5 — — —
1300 — 1.4±0.4 — —
1600 — 3.9±2 —
490±20
(5.0±0.2)
Standard
1950 — 7.0 — —
Adjustment specification of aneroid
compensator
Pump
rotation
rpm
Altitude
m
Air
pressure
difference
kPa
(mmHg)
Amount of
reduction
mm
3
/ST
Rate of
reduction
%
0000
(500)
-5.9±3.3
(-44±3)
Inflation
point
Inflation
point
1000
2000
-21.9
(-164)
-4.6±1 -11±3
6C-44-3.tif
6C-44-1.tif
6C-44-2.tif
+
0.4
−
0.3