Cummins B 3.9 Pump Engine
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Cummins B 3.9 Pump Engine
Category:
Power:
36kw~80kw
Rating type:
Max Power
Type:
In line, 4 cylinders, 4 stroke
Application:
For pump application
Packing Size:
1000*900*1100mm
Weight:
420kg
HS Code:
840820
Technical Specification of Cummins B 3.9 Pump Engine
Engine Model
4BT3.9-P50~4BTA3.9-P110
Fuel System
Mechanical Pump+Electronic Governor
Power
36kw~80kw
Peak Engine Torque
229N.m~446N.m
Speed
1500rpm~1800rpm
Compression Ratio
17.3:1
Rating Type
Rated power
Fuel Consumption at Rated Speed
207g/kwh
Bore
102
Aspiration
Turbochanger& Aftercooler
Stroke
120
Cooling system
Fan &Radiator/Heat exchanger
Displacement
3.9L
Emission
China Stage II
General Information of Cummins B 3.9 Pump Engine
Reliable Power for Pumping Applications
The Cummins B 3.9 Pump Engine delivers strong and steady power for water, irrigation, and industrial pumping systems. It is built for efficiency, durability, and smooth performance. With a compact design and proven reliability, this 4-cylinder engine is ideal for operations that need consistent output and low running costs.
Efficient and Fuel-Saving Design
The Cummins B 3.9 Pump Engine uses a modern direct fuel injection system for clean and efficient combustion. It provides strong torque at low speeds while using less fuel. In addition, the cooling and air-handling systems keep the engine at a stable temperature, even during long working hours. This means better efficiency, lower fuel use, and reduced maintenance costs.
Durable Build for Long Life
This pump engine is made with high-quality materials and tested for tough environments. Its reinforced components and solid structure ensure long service life and steady performance. Maintenance is easy because filters and service points are within reach. As a result, operators can complete routine checks faster and keep equipment running smoothly.
Versatile and Easy to Maintain
The Cummins B 3.9 Pump Engine works well in many fields, including construction dewatering, farm irrigation, and industrial water systems. It starts easily, runs quietly, and delivers stable performance. Furthermore, parts are widely available, and Cummins’ global support network ensures fast service anywhere.
Choosing the Cummins B 3.9 Pump Engine means investing in dependable power, good fuel economy, and simple maintenance. It is a smart choice for anyone who needs reliable pumping performance day after day.
| Model | Emission Standard | Governed (kW@RPM) | Peak Torque (Nm@RPM) | Cylinders | Displacement (Liters) |
| 4BT3.9-P50 | China Stage II | 36@1500 | 229@1500 | 4 | 3.9 |
| 4BT3.9-P55 | China Stage II | 40@1800 | 212@1800 | 4 | 3.9 |
| 4BTA3.9-P80 | China Stage II | 58@1500 | 369@1500 | 4 | 3.9 |
| 4BTA3.9-P90 | China Stage II | 67@1800 | 355@1800 | 4 | 3.9 |
| 4BTA3.9-P95 | China Stage II | 70@1500 | 446@1500 | 4 | 3.9 |
| 4BTA3.9-P110 | China Stage II | 80@1800 | 424@1800 | 4 | 3.9 |
Download of Cummins B 3.9 Pump Engine Datasheet
Model
Power
Emission
Datasheet
Drawing
Service Manual
4BT3.9-P50~4BTA3.9-P110
36kw~80kw
China Stage II
Download
Download
Download
Model
4BT3.9-P50~4BTA3.9-P110
Power
36kw~80kw
Emission
China Stage II
Datasheet
Download
Drawing
Download
Service Manual
Download
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