Start the Weifang 4R series Machine

The Weifang 4R series mainly consists of two major categories: R4105 and R4108. Each model is available in four configurations and is suitable for applications in power generation units, construction machinery, agricultural machinery, and other scenarios.

I. R4105 Series Diesel Engine (Bore 105mm, Focused on Medium Power Scenarios)
This series is a four-cylinder, wet-cooled, four-stroke diesel engine with a rated speed of 1500 to 2400 r/min. It is suitable for a variety of scenarios including power generation units, engineering equipment, and agricultural machinery, offering a balanced performance in terms of power and economy.

1. R4105D Natural Aspiration Diesel Engine for Power Generation Units
Core Parameters
Bore × Stroke: 105mm × 125mm
Total Piston Displacement: 4.33L
Maximum Power: 59kW (Calibrated for power generation units)
Rated Speed: 1500 to 2400 r/min
Fuel Consumption Rate: ≤ 247g/kW.h
Oil Consumption Rate: ≤ 1.63g/kW.h
Weight: 420kg
Overall Dimensions: 862 × 619 × 1111mm
Product Features
This is a basic natural aspiration model, specifically optimized for power generation units. It features a mature and reliable structure, easy maintenance, and is suitable for medium power backup and regular power supply scenarios. It operates stably at low speeds and has excellent fuel consumption control, making it a cost-effective choice for scenarios where cost and reliability are key considerations.

2. R4105ZD Turbocharged Diesel Engine for Power Generation Units
Core Parameters
Bore × Stroke: 105mm × 125mm
Total Piston Displacement: 4.33L
Maximum Power: 74kW (Calibrated for power generation units)
Rated Speed: 1500 to 2400 r/min
Fuel Consumption Rate: ≤ 247g/kW.h
Oil Consumption Rate: ≤ 1.63g/kW.h
Weight: 435kg
Overall Dimensions: 862 × 619 × 1111mm
Product Features
Based on the R4105D, this model is upgraded with turbocharging technology, increasing power output by approximately 25%. It achieves higher power density within the same displacement and is suitable for medium to large power generation units. The turbocharged combustion optimization provides a more direct power response, capable of handling short-term heavy loads and load fluctuations while maintaining stable fuel consumption. It is suitable for engineering sites and commercial backup power supply scenarios.

3. R4105AZLD Turbocharged Diesel Engine for Power Generation Units (Long Stroke Reinforced Model)
Core Parameters
Bore × Stroke: 105mm × 135mm
Total Piston Displacement: 4.67L
Maximum Power: 83kW (Calibrated for power generation units)
Rated Speed: 1500 to 2400 r/min
Fuel Consumption Rate: ≤ 247g/kW.h
Oil Consumption Rate: ≤ 1.63g/kW.h
Weight: 435kg
Overall Dimensions: 862 × 619 × 1111mm
Product Features
This is the most powerful model in the series for power generation units, featuring a long stroke design combined with turbocharging technology. It excels in low-end torque and continuous power output, making it suitable for industrial-grade regular power supply and heavy-duty power generation units. The reinforced structure design can handle long-term continuous operation, with ample power reserve and strong operational stability, making it ideal for high-load and high-reliability requirements.

4. R4105IZLD Turbocharged and Intercooled Diesel Engine for Power Generation Units
Core Features
This is an enhanced turbocharged and intercooled model based on the R4105. It adds intercooling technology on top of turbocharging, further optimizing intake efficiency and combustion performance, significantly enhancing power output and thermal stability. It is suitable for large power generation units and extreme condition backup power supply scenarios. The intercooling technology effectively reduces intake temperature, reduces thermal load, and improves engine reliability and lifespan, making it suitable for high-load and long-term operation under harsh conditions. II. R4108 Series Diesel Engines (Bore 108mm, Focused on High Power Applications)
This series features larger bore and displacement, stronger power output, and a rated speed of 2400r/min. It is suitable for medium to large power generator sets, construction machinery, heavy-duty agricultural machinery, and other scenarios.
1. R4108D Naturally Aspirated Diesel Engine for Generator Sets
Core Parameters
Bore × Stroke: 108mm × 125mm
Total Piston Displacement: 4.58L
Maximum Power: 61kW (Generator Set Operating Conditions)
Rated Speed: 1500 - 2400r/min
Fuel Consumption Rate: ≤ 247g/kW.h
Oil Consumption Rate: ≤ 1.63g/kW.h
Weight: 420kg
Overall Dimensions: 862 × 619 × 1111mm
Product Features
This large-displacement naturally aspirated model offers a slight power increase compared to the R4105D, with more abundant low-end torque output. It is suitable for medium power generator sets and small construction equipment. The structure is simple and reliable, with low maintenance costs, making it ideal for scenarios with high requirements for power stability and small load fluctuations. It has outstanding long-term operational economy.
2. R4108ZD Turbocharged Diesel Engine for Generator Sets
Core Parameters
Bore × Stroke: 108mm × 125mm
Total Piston Displacement: 4.58L
Maximum Power: 80kW (Generator Set Operating Conditions)
Rated Speed: 1500 - 2400r/min
Fuel Consumption Rate: ≤ 247g/kW.h
Oil Consumption Rate: ≤ 1.63g/kW.h
Weight: 430kg
Overall Dimensions: 862 × 619 × 1111mm
Product Features
Combining large displacement with turbocharging technology, this model increases power output by approximately 31%, offering high power density. It is suitable for medium to large power generator sets and medium-sized construction machinery. The turbocharging optimization provides a more direct power response, capable of handling heavy-load startups and sudden load changes while maintaining excellent fuel consumption control. It is suitable for construction sites, industrial backup power, and other scenarios.
3. R4108AZLD Turbocharged Diesel Engine for Generator Sets (Long Stroke Reinforced Version)
Core Features
Based on the R4108 platform, this long-stroke turbocharged model combines large bore, long stroke, and turbocharging technology, providing stronger low-end torque and continuous power output. It is suitable for large power generator sets and heavy-duty construction equipment. The reinforced structural design can handle long-term continuous operation, with sufficient power reserve to stably cope with high loads and high fluctuations, making it a reliable power choice for heavy-duty scenarios.
4. R4108IZLD Turbocharged Intercooled Diesel Engine for Generator Sets
Core Features
The most powerful model in the series for generator sets, it adopts turbocharging and intercooling technology, significantly enhancing intake efficiency and combustion efficiency. Power output, thermal stability, and reliability are all upgraded, making it suitable for large power industrial generator sets and extreme condition backup power. The intercooling technology effectively reduces thermal load, extending engine life and improving operational stability, making it suitable for high-load, long-term continuous operation in harsh conditions.
Supplementary Information
The model codes D, ZD, AZLD, and IZLD represent naturally aspirated for generator sets, turbocharged for generator sets, long-stroke turbocharged for generator sets, and turbocharged intercooled for generator sets, respectively. Customized operating condition calibrations can be provided based on user requirements.
The two platform models have uniform overall dimensions of 862 × 619 × 1111mm, with universal installation interfaces. Configurations can be flexibly selected based on power requirements and load scenarios.