DCEC 4BTAA3.9-C125 Industrial Application Engine
| Engine Model | 4BTAA3.9-C125 |
| Rated Power / Speed: | 125 HP @ 2200 RPM |
| Peak Torque: | 480 N·m @ 1400 RPM |
| Type | 4 Cylinders, in Line |
| Fuel System | Weifu PW2000 Pump RQV-K Mechanical Governor |
| Aspiration | Turbocharged & Aftercooled |
| Displacement | 3.9 L |
| Bore * Stroke | 102 mm * 120 mm |
| Packing Size (L * W * H) | 778 mm * 634 mm * 912 mm |
| Lead Time: | 5-15 Working Days |
General Infomation of DCEC 4BTAA3.9-C125 Industrial Engine
| General Infomation of DCEC 4BTAA3.9-C125 Industrial Engine | |||
| Engine Model | 4BTAA3.9-C125 | Curve & Datasheet | FR92941 |
| Compression Ratio | 17.3 : 1 | Displacement | 3.9 L |
| Advertised Power | 125 HP @ 2200 RPM | Bore * Stroke | 102 mm * 120 mm |
| Peak Torque | 480 N·m @ 1400 RPM | Aspiration | Turbocharged & Air-Air Intercooler |
| Fuel System | Weifu PW2000 Pump / RQV-K Mechanical Governor | Cylinders | 4 Cylinders, in Line |
| Engine Wet Weight | 355 kg | Basic Engine(L * W * H) | 778 mm * 634 mm * 912 mm |
| Installation Data of DCEC 4BTAA3.9-C125 Industrial Engine | |||
| Moment Of Inertia Of Rotating Components (No Flywheel) | 0.143 kg·m² | ||
| Center Of Gravity From Front Face Of Block | 262 mm | ||
| Center Of Gravity Above Crankshaft Centerline | 160 mm | ||
| Maximum (Static) Bending Moment At Front Support Mounting Surface | 435 N.m | ||
| Maximum (Static) Bending Moment At Side Pad Mounting Surface | N/A | ||
| Maximum (Static) Bending Moment at Rear Face of Block | 1356 N.m | ||
| Moment of Inertia of Complete Engine— Roll Axis | 11.1 kg·m² | ||
| Moment of Inertia of Complete Engine— Pitch Axis | 19.1 kg·m² | ||
| Moment of Inertia of Complete Engine— Yaw Axis | 14.7 kg·m² | ||
| Maximum Crankshaft Thrust Bearing Load Limit-Intermittent Load | 3425 N | ||
| Maximum Crankshaft Thrust Bearing Load Limit-Continuous Load | 1112 N | ||
Performance Data of DCEC 4BTAA3.9-C125 Industrial Engine
| Minimum Idle Speed | 900 RPM | Throttle Handle Angle – High Idle | 113 ± 10° Deg | ||
| Maximum Speed Adjustment Speed (10% Rated Load) | 2460 RPM | Throttle Handle Angle – Low Idle | 71 ± 10° Deg | ||
| Maximum Overspeed Performance | 3500 RPM | Throttle Handle Angle – Rotation Angle | 242 ± 5° Deg | ||
| Maximum Altitude Allowed for Continuous Operation | 2200 m | Throttle Angle at Engine Shutdown – Engine Work | 107 ± 5° Deg | ||
| Maximum Torque When the Throttle is Fully Closed | 250 N.m | Throttle Angle at Engine Shutdown – Engine Shutdown | 65 ± 5° Deg | ||
| Nominal Governor Regulation | ≤8% | Torque Converter Stall Speed | 1300 RPM | ||
Advantages of DCEC 4BTAA3.9-C125 Industrial Engine
Integrated Design & Reduced Complexity:
Cylinder Block/Head Integration: A unified design minimizes parts by 40% compared to conventional engines, reducing assembly complexity and potential failure points.
Leak Prevention: Eliminates water/oil leakage risks, enhancing durability in harsh conditions and lowering maintenance needs.
- Robust Construction & Materials:
Forged Steel Components: Camshaft and crankshaft made from forged steel ensure high strength, fatigue resistance, and longevity under heavy loads.
High-Strength Block: Reinforced casting integrates multiple parts, boosting rigidity, pressure resistance, and structural reliability.
- Precision Sealing & Oil Control:
Platform Mesh Honing: Cylinder bore surface treatment optimizes geometric integrity, preventing oil leakage.
Advanced Sealing Tech: New piston rings and crimped gaskets further reduce oil consumption and leakage risks.
- In-House Engine Control Systems:
DCEC-Developed Electronics: Five core systems (e.g., fuel injection, emission control) are designed and validated globally, ensuring adaptability and reliability across diverse environments.
Proven Performance: Extensive real-world testing underpins exceptional fuel economy and operational consistency.
- Overall Benefits:
Enhanced Reliability: Fewer parts and robust construction slash failure rates.
Long Service Life: Durable materials and sealing tech extend operational lifespan.
Economic Efficiency: Optimized design and electronics reduce fuel/oil waste, lowering total cost of ownership.
This engine is engineered for demanding applications, prioritizing longevity, efficiency, and reliability through innovative design and rigorous testing.chieves a balance of power, reliability, eco-compliance, and cost-effectiveness. Ideal for non-road applications such as engineering machinery and agricultural equipment, it delivers an efficient, durable, and user-friendly power solution.
