


B5.9 Construction Machinery Engines Basic information
| Engine Type: | 6 – Cylinder; In – line; 4 – Cycle |
| Displacement: | 5.9 L |
| Rated Speed: | 2200 – 2500 RPM |
| Advertised Power: | 130 HP to 205 HP |
| Peak Torque: | 580 N.m to 870 N.m |
| Bore * Stroke: | 102 mm*120 mm |
| Packing Size (L * W * H): | 1112mm * 912mm * 1100mm |
| Dry Weight: | 500-600kg |
DCEC B5.9 Construction Machinery Engines Detailed information
The Cummins 6BT5.9-C engine stands out as a highly esteemed diesel engine, developed by the Dongfeng Cummins Engine Company (DCEC). This joint venture, founded in 1986, brings together Cummins USA, which holds a 50% stake, and Dongfeng Motor Corporation. The 6BT5.9-C is part of Cummins’ renowned B Series engines, which are globally recognized for their exceptional reliability, durability, and performance in a variety of applications.
Key Features of the Cummins 6BT5.9-C
Key Features of the Cummins 6BT5.9-C
Fuel Efficiency and Performance
One of the standout features of the Cummins 6BT5.9-C is its high fuel efficiency. The engine is meticulously engineered to offer superior fuel economy, making it an economical choice across a broad range of industries and applications.
Robust Design and Easy Maintenance
Robust Design and Easy Maintenance
In addition to its fuel efficiency, the 6BT5.9-C boasts an advanced integrated design. The compact and durable construction ensures that the engine is not only easy to install but also straightforward to maintain, which is a critical aspect in minimizing downtime for users.
Turbocharging for Enhanced Power
The engine is equipped with a Holset Exhaust Gas Wastegate Turbocharger, which plays a pivotal role in boosting the engine’s power output. This turbocharger makes effective use of exhaust gases, ensuring both high efficiency and enhanced performance.
Precision Fuel Delivery
Moreover, the engine features a Rotor High-Pressure Fuel Pump, which is designed to deliver fuel precisely and consistently. This high-pressure fuel system optimizes combustion, contributing to better engine performance and overall efficiency.
Durability and Longevity
The engine’s Platform Honing Designed Cylinder Liner is another innovative feature that improves engine durability. By employing advanced honing technology, this design reduces friction and enhances the overall lifespan of the engine, even in challenging working conditions.
Applications of the Cummins 6BT5.9-C Engine
Thanks to its powerful performance and rugged design, the Cummins 6BT5.9-C engine is widely utilized across various industries. Some of its key applications include:
Dongfeng Trucks (light, medium, and heavy-duty)
Heavy Trucks
Excavators
Road Rollers
Bulldozers
Cranes
Water Pumps
Engine Power Packs (for generators and other stationary equipment)
Technical Specifications
Here’s a quick look at the general specifications of the Cummins 6BT5.9-C engine:
Engine Type: Inline 6-cylinder, 4-stroke diesel engine
Displacement: 5.9 liters (5900 cc)
Aspiration: Turbocharged (with wastegate)
Fuel System: Direct injection
Cooling System: Liquid-cooled
Power Output: Typically ranges from 130 to 230 HP, depending on the application
Torque: High torque output, suitable for heavy-duty use
Advantages of the Cummins 6BT5.9-C
The Cummins 6BT5.9-C engine provides numerous advantages, making it a top choice for many industries:
Global Cummins Technology: Manufactured under Cummins’ stringent quality standards, ensuring top-tier engineering excellence.
Proven Reliability: Widely used in harsh environments, the engine’s dependability is well-established.
Low Maintenance: Designed for ease of service and minimizing downtime, resulting in reduced maintenance costs and greater uptime.
In conclusion, the Cummins 6BT5.9-C engine represents the fruitful collaboration between Cummins and Dongfeng, blending world-class engineering with localized production. This engine is built to meet the diverse needs of industries worldwide, offering reliability, cost-effectiveness, and performance.
Summary of B5.9 Construction Machinery Engines models
| Engine Model | Governed(KW@RPM) | Peak Torque(Nm@RPM) | Intake |
| 6BT5.9-C115 | 115 HP @ 2000 RPM | 430 N.m @ 1500 RPM | Supercharged intercooling |
| 6BT5.9-C120 | 120 HP @ 2200 RPM | 436 N.m @ 1500 RPM | Supercharged intercooling |
| 6BT5.9-C125 | 123 HP @ 2200 RPM | 400 N.m @ 2200 RPM | Supercharged intercooling |
| 6BT5.9-C130 | 130 HP @ 2200 RPM | 560 N.m @ 1500 RPM | Supercharged intercooling |
| 6BT5.9-C135 | 135 HP @ 2000 RPM | 570 N.m @ 1500 RPM | Supercharged intercooling |
| 6BT5.9-C145 | 145 HP @ 2100 RPM | 580 N.m @ 1500 RPM | Supercharged intercooling |
| 6BT5.9-C150 | 150 HP @ 2500 RPM | 565 N.m @ 1500 RPM | Turbocharged |
| 6BTA5.9-C155 | 155 HP @ 2000 RPM | 630 N.m @ 1400 RPM | Turbochanger & Water-Air Intercooler |
| 6BTA5.9-C165 | 165 HP @ 2300 RPM | 435 N.m @ 1400 RPM | Turbocharged |
| 6BTA5.9-C170 | 170 HP @ 2300 RPM | 630 N.m @ 1400 RPM | Turbochanger & Water-Air Intercooler |
| 6BTA5.9-C175 | 175 HP @ 2200 RPM | 680 N.m @ 1500 RPM | Turbochanger & Water-Air Intercooler |
| 6BTA5.9-C180 | 180 HP @ 2200 RPM | 435 N.m @ 1500 RPM | Turbocharged & Aftercooled |
| 6BTAA5.9-C130 | 130 HP @ 2200 RPM | 580 N.m @ 1500 RPM | Turbocharged&Air-Air Intercooler |
| 6BTAA5.9-C150 | 149 HP @ 1950 RPM | 549 N.m @ 1950 RPM | Turbocharged & Air-Air Intercooler |
| 6BTAA5.9-C160 | 160 HP @ 2200 RPM | 670 N.m @ 1500 RPM | Turbocharged & Air-Air Intercooler |
| 6BTAA5.9-C170 | 170 HP @ 2200 RPM | 750 N.m @ 1400 RPM | Turbocharged&Air-Air Intercooler |
| 6BTAA5.9-C180 | 177 HP @ 2200 RPM | 573 N.m @ 2200 RPM | Turbocharged&Air-Air Intercooler |
| 6BTAA5.9-C190 | 190 HP @ 2000 RPM | 678 N.m @ 2000 RPM | Turbocharged & Aftercooled |
| 6BTAA5.9-C205 | 205 HP @ 2200 RPM | 664 N.m @ 2200 RPM | Turbocharged & Aftercooled |

