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Cummins 40-75

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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)

106.7119.8
(4.2 4.72)

106.7119.8(4.2 4.72)

106.7119.8(4.2 4.72)

106.7119.8 (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

m/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

m/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

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Last modified: April 17, 2010