QSB3.9 Construction Machinery Engines Basic information
| Engine Type: | 4 – Cylinder; In – line; 4 – Cycle |
| Displacement: | 3.9 L |
| Rated Speed: | 2000 – 2500 RPM |
| Advertised Power: | 80 HP to 130 HP @ 2000 – 2500 RPM |
| Peak Torque: | 370 N.m to 520 N.m @ 2000 – 2500 RPM |
| Bore * Stroke: | 102 mm*120 mm |
| Packing Size (L * W * H): | 1010mm * 800mm * 800mm |
| Dry Weight: | 500-600kg |
DCEC QSB3.9 Construction Machinery Engines Detailed information
The Dongfeng Cummins Joint Venture Plant (DCEC), founded in 1986, is a partnership between Dongfeng and Cummins USA, with each holding a 50% stake. The plant uses Cummins’ technology to produce engines for heavy-duty applications.
A key engine is the Cummins QSB3.9-C, known for its reliability and versatility. It is commonly used in:
Heavy trucks
Excavators
Road rollers
Bulldozers
Cranes
Water pumps
Engine power packs
Key Features of the Cummins QSB3.9-C Engine:
Fuel Efficiency: Optimized for cost-effective, heavy-duty operations.
Integrated Design: Combines Cummins’ engineering for smooth performance.
High-Quality Build: Manufactured to strict standards for durability.
Holset Exhaust Gas Wastegate: Boosts turbocharger efficiency and engine power.
High-Pressure Fuel Pump: Improves combustion for better power output.
Cylinder Liner Design: Reduces friction, extending engine life.
Proven Performance: Reliable in demanding conditions.
The Cummins QSB3.9-C engine showcases Cummins’ commitment to efficiency and durability, trusted across industries for reliable power solutions.
QSB3.9 Construction Machinery Engines Details
| Engine Model | Governed(KW@RPM) | Peak Torque(Nm@RPM) | Intake |
| QSB3.9-C110-30 | 110 HP @ 2200 RPM | 480 N.m @1600 RPM | Turbocharged & Air-Air Intercooler |
| QSB3.9-C125-30 | 125 HP @ 2200 RPM | 480 N.m @1350 RPM | Turbocharged & Air-Air Intercooler |
| QSB3.9-C130-31 | 130 HP @ 2500 RPM | 520 N.m @1600 RPM | Turbocharged & Air-Air Intercooler |
