Details
Genuine Dongfeng Cummins 4BT3.9-C100 Engine Assembly for Construction Machinery
The Cummins 4BT3.9-C100 engine is a premier 4-cylinder, 3.9-liter turbocharged power unit engineered explicitly for grueling, continuous-duty industrial applications. Delivering a rated power of 75 kW (100 HP Cummins construction engine) at 2400 RPM, this complete 4BT3.9-C100 engine assembly balances structural simplicity with high mechanical reliability.
As a factory-direct genuine DCEC 4BT3.9-C100 supplier, HekoPower exports complete, brand-new engine assemblies directly from our warehouse. This heavy duty 3.9L industrial diesel engine is fully optimized to withstand the intense dust, high operating temperatures, and erratic load cycles common to modern job sites.
Tech Specs of Cummins 4BT3.9-C100
General Engine Data
Engine Model: Cummins 4BT3.9-C100
Type: 4 Cylinders in Line
Displacement: 3.9 L
Bore * Stroke: 102 * 120
Overall Dimension: 867mm*544mm*988mm
Net Weight (with flywheel & alternator): 338 Kg
Key Performance Data
Rated Power: 75 kW/100HP
Rated Speed: 2400 rpm
Max Torque/Speed: 330 N.m @ 1500 rpm
Fuel Consumption @ Rated Power: 250g/Kw.h
Max Continuous Running Altitude: 2000 m
More Technical Data
Certification: Euro I
Aspiration: Turbocharged-Intercooled
Fuel System: Weifu PW/RSV
Compression Ratio: 17.3:1
Electrical System (Starter Motor/Alternator): 12V/24V
Lowest Starting Temp Without auxiliary system: -12℃
Cooling Method: Water cooled
Engine Cooling Fluid Volume: 7.9 L
Fuel Economy Data and Injection Dynamics
Unlike modern electronically controlled engines, this unit relies on an industrial diesel engine with mechanical fuel pump configurations. Specifically, it uses a Weifu PW fuel pump for DCEC 4BT3.9-C100 paired with a mechanical RSV governor.
The baseline Cummins 4BT3.9-C100 fuel consumption rate hits its sweet spot near peak torque, operating at approximately 214 g/kW.h. Under maximum load at full speed, the 4BT3.9-C100 fuel consumption g/kW.h at 2400 RPM holds steady at roughly 225 g/kW.h. This efficiency stems from direct-injection dynamics that optimize fuel droplet atomization within the 102 mm cylinder bore.
Critical Engineering Identifiers: CPL 3113 and Curve FR91468
When buying a new Cummins 4BT3.9-C100 engine, tracking the exact production variant is critical to prevent installation errors.
- The Cummins 4BT3.9-C100 CPL number for this standard industrial block is CPL code 3113.
- The corresponding certified 4BT3.9-C100 engine performance curve FR91468 governs its torque-to-RPM ratios.
Reviewing the Cummins 4BT3.9-C100 torque curve reveals that the engine hits its maximum 330 N.m torque early at 1500 RPM. This rapid torque rise provides immediate hydraulic breakout power without forcing the operator to run the equipment at maximum throttle.
Real Application Scenarios in Heavy Equipment
The Cummins construction machinery engine line is highly adaptive. The C100 variant is structurally designed to interface directly with heavy hydraulic pumps, making it a universal choice for global machinery brands like Liugong, Changlin, Heli, and XCMG.
Earthmoving Equipment: Excavators and Wheel Loaders
The constant, jerky load spikes of digging operations require a reliable diesel engine for hydraulic equipment.
- Cummins 4BT3.9-C100 for excavator use provides the exact power curves needed to drive main tandem hydraulic axial piston pumps without stalling.
- Cummins 4BT3.9-C100 for wheel loader applications handles the high tractive effort needed when a machine rams into a pile of aggregate, maintaining stable torque even under low gear operations.
Compaction and Material Handling Infrastructure
Infrastructure projects require long, unchanging power bands.
- The Cummins 4BT3.9-C100 for road roller use relies on its heavy flywheels to absorb the severe continuous vibration generated by oscillatory drum systems.
- For logistics, it acts as the ideal replacement engine for 5 ton rough terrain forklift Cummins 4BT, fitting easily into tight engine bays due to compact Cummins 4BT3.9-C100 dimensions.
- In stationary settings, this unit functions as a Cummins 4BT3.9-C100 pump drive engine or a standalone Cummins 4BT3.9-C100 industrial power unit to run water pumps and air compressors.
Industrial Comparison: 4BT3.9-C100 vs. Alternative Power Units
Selecting the correct Cummins 100HP industrial engine requires balancing mechanical simplicity against modern electronic control variants.
4BT3.9-C100 Mechanical vs. QSB3.9 Electronic Engines
The core advantage of the Dongfeng Cummins 4BT3.9-C100 over newer QSB series engines is its complete lack of electronic sensors. The mechanical Cummins 4-cylinder diesel engine uses zero ECUs, wire harnesses, or complex emissions scrubbing systems. It functions perfectly on lower-quality fuel and can be repaired in isolated fields with standard mechanical tools.
4BT3.9 (100 HP) vs. 6BT5.9 (130 HP+) Form Factors
While the 6BT5.9 engine family offers higher horsepower ratings, it introduces two extra cylinders, expanding the overall weight and footprint. The Cummins 3.9L construction engine saves roughly 100 kg of deadweight, preserving fuel and structural balance in 5-ton machinery without sacrificing the required 100 HP threshold.
Maintenance Guide and Replacement Tips for Fleet Operators
To maximize service life in a Cummins engine for dusty construction environment setups, fleet supervisors must implement proactive operational protocols.
Combatting Contamination in High-Dust Zones
Dust is the primary enemy of the Cummins 4BT3.9-C100 turbocharger system. Inspect the turbo impeller blades every 250 operating hours for signs of micro-abrasion. Ensure the dual-element air intake filter seals are perfectly seated; even a microscopic gap allows silicates to bypass the filtration system, destroying the compressor wheel and causing engine dusting.
Fuel System Integrity and Injector Maintenance
Because the Cummins 4BT3.9-C100 injector pump depends on the diesel fuel itself for lubrication, water contamination will quickly cause the pump elements to seize. Install a high-efficiency water separator before the primary fuel filter. Flush sediment bowls weekly, and adjust injector popping pressures according to the official Cummins 4BT3.9-C100 maintenance manual specifications to maintain clean combustion.
HekoPower B2B Procurement and Export Logistics
As an established international Cummins 4BT3.9-C100 OEM factory trading partner, HekoPower optimizes your supply chain from initial transaction to final delivery.
Lead Times and Worldwide Shipping Frameworks
We understand that equipment downtime cuts into project profitability. Our average original 4BT3.9-C100 engine assembly lead time is 7 to 12 business days for standard configurations. Every engine undergoes a rigorous 30-minute hot-run test on our dynamometer to verify oil pressure, cooling metrics, and power output before being sealed in an export-grade seaworthy wooden crate.
Trade Documentation and Compliance Verification
To facilitate smooth customs clearance and minimize import tariffs, HekoPower provides an authentic Cummins 4BT3.9-C100 supplier with certificate of origin. Complete commercial invoices, packing lists, and original factory build sheets matching the stamped engine data plate are included with every international shipment.
Cummins B3.9-C Series, original products from Dongfeng Cummins Engine Plant (DCEC), Cummins Joint Venture Plant since 1986, 50% shareholding by Cummins USA. This series mainly includes 4BT3.9-C80, 4BT3.9-C100, 4BT3.9-C105, 4BT3.9-C110, 4BTA3.9-C80, 4BTA3.9-C100, 4BTA3.9-C110, 4BTA3.9-C120, 4BTA3.9-C125, 4BTA3.9-C130, 4BTAA3.9-C80, 4BTAA3.9-C100, 4BTAA3.9-C110, 4BTAA3.9-C115, 4BTAA3.9-C125, 4BTAA3.9-C130.
Frequently Asked Questions regarding the Cummins 4BT3.9-C100 Engine
What is the current Cummins 4BT3.9-C100 engine price?
The Cummins 4BT3.9-C100 engine price depends on your purchase volume and the specific bolt-on accessories required (such as air compressors or specialized flywheel housings). Contact HekoPower's commercial team for a tiered wholesale quote tailored to your shipping port.
Can I buy genuine Cummins 4BT3.9-C100 wholesale quantities for fleet replacement?
Yes. We specialize in supplying global construction firms, mining groups, and regional parts distributors. You can buy genuine Cummins 4BT3.9-C100 wholesale batches with uniform build specifications to streamline your field service parts inventory.
Is this engine suitable for continuous operation in high-temperature environments?
Absolutely. This Cummins engine for continuous operation utilizes an oversized cast-iron cylinder block and an efficient water-cooled jacket system. It is fully rated to run continuously in environments exceeding 45°C without experiencing thermal derating.
Does HekoPower offer a complete, drop-in engine assembly?
Yes, our Cummins 100HP engine for construction equipment ships as a fully dressed, operational power unit. This includes the fuel injection system, water pump, alternator, starter motor, and intake manifolds, allowing for a fast, hassle-free field swap.
What is the advantage of the mechanical fuel pump system?
Mechanical fuel systems are easier to maintain in remote operating environments and typically require less electronic diagnostic equipment.
