October 18, 2025
How to judge tractor failure without disassembly
The Dongfanghong LRC105 series diesel engine is an advanced, larger-displacement version of the LR105 series, developed through extensive research and optimization. By enhancing the design of key components such as the crankshaft and connecting rod mechanisms, this engine delivers improved combustion efficiency, stronger power output, and lower fuel consumption. At the same speed, it boosts power by over 10% and increases maximum torque by more than 15%, making it ideal for demanding applications in construction machinery, agricultural equipment, and trucks.
Designed with the same dimensions and mounting configurations as the LR105 series, the LRC105 series ensures easy integration and upgradeability for existing systems. It incorporates cutting-edge manufacturing and testing technologies, ensuring not only high performance but also excellent reliability and fuel economy. This makes it a top choice for industries that require durable and efficient power solutions.
Compared to other engines in the same class, particularly those with a 105mm bore, the LRC105 series offers greater displacement, higher power output, and better low-speed torque capabilities. Its robust design and superior performance make it one of the leading models in its category within China's market.
Here are some key specifications:
- **Model**: LRC4105 / LRC6105
- **Cylinder Bore × Stroke (mm)**: 4105×135 / 6105×135
- **Displacement (L)**: 4.68 / 7.01
- **Type**: Inline, water-cooled, four-stroke, naturally aspirated, direct injection
- **Power (kW)**: 53, 59, 62, 66, 80, 90, 93, 98, 109
- **Speed (r/min)**: 2000, 2200, 2300, 2400, 2000, 2200, 2300, 2400, 2600
- **Maximum Torque (Nm)**: 296, 285, 286, 290, 446, 457, 451, 456, 468
- **Torque Speed (r/min)**: 1400–1500, 1400–1600, 1600–1800, 1600–1800, 1400–1500, 1400–1600, 1500–1700, 1600–1800, 1800–2000
- **Fuel Consumption (g/kWh)**: 238, 238, 238, 242, 238, 238, 238, 242, 242
- **Minimum Fuel Consumption (g/kWh)**: 225
- **Exhaust Smoke (Bosch)**: 3.5
- **Noise (dB(A))**: 111–116
- **Emission Standard**: ISO 8178
- **Weight (kg)**: 450 / 650
- **Main Applications**: Construction Machinery, Agricultural Machinery, Mobile Power Station, Trucks
This versatile engine is widely used across multiple sectors, offering reliable power and performance tailored to meet the evolving demands of modern industrial applications.
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