Cummins Powered Generators 40kW tp 75kW

40 kW

 50 kW

 60 kW

75 kW

Engine Model

4B3.9-G2

4BT3.9-G3

4BT3.9-G4

4BTA3.9-G3

Horsepower

68

86

102

125

Type

4 cyl. Inline

4 cyl. Inline

4 cyl. Inline

4 cyl. Inline

Aspiration

Natural

Turbocharged

Turbocharged

Turbocharged /Intercooled

Bore x Stroke

mm(inches)

106.7×119.8
(4.2 × 4.72)

106.7×119.8(4.2 × 4.72)

106.7×119.8(4.2 × 4.72)

106.7×119.8 (4.2 × 4.72)

Displacement

litres(inches3)

3.92(239.2)

3.92(239.2)

3.92(239.2)

3.92(239.2)

Compression ratio

17.3:1

16.5:1

16.5:1

16.5:1

Fuel Consumption 100% load

litre/hr.(US gal/hr)

13.6(3.6)

16.0(4.2)

18.9(5.0)

24(6.3)

Fuel Consumption 75% load

litre/hr.(US gal/hr)

9.8(2.6)

12.5(3.2)

15.1(4.0)

17(4.4)

Fuel Consumption 50% load

 litre/hr.(US gal/hr)

7.2(1.9)

9.5(2.5)

11.0(2.9)

12(3.2)

Battery size

(cranking amps)

4D (1000)

4D (1000)

4D (1000)

4D (1000)

Oil capacity

litres(US gal)

 9.5

9.5

9.5

9.5

Coolant capacity

litres(US gal)

20

20

20

20

Thermostat range

°C(°F)

 82-95(180-203)

82-95(180-203)

82-95(180-203)

82-95(180-203)

Max pressure cap

kpa(psi)

69(10)

69(10)

69(10)

69(10)

Intake air flow

m³/min(cfm)

2.9(103)

4.25(150)

4.5(160) -

248

Exhaust gas temperature

°C(°F)

 651(1204)

491(915)

543(1010)

191(376)

Exhaust gas flow

m³/min(cfm)

8.7(306)

11.2(395)

(13)460 -366

Heat rejection to coolant

BTU/min

1450

2065

2380

2350

Ambient capability of radiator

°C(°F)

49(120)

43(110)

43(110)

43(110)

Max allowable static pressure on radiator exhaust

mmHg

12.7

12.7

12.7

12.7