Product Introduction
The 550EF is an electronic fuel injection two-stroke aircraft engine that features a horizontally opposed four cylinder structure and air-cooled design, combining lightweight and stability advantages. Its electronic fuel injection system significantly optimizes power output and fuel efficiency, and is suitable for both push and pull installations, making it suitable for small fixed wing unmanned aerial vehicles, rotary wing aircraft, and other aircraft. By combining lubrication and air cooling technology, the overall weight of the aircraft is significantly reduced while maintaining low noise and smooth operation characteristics, improving the high-altitude performance and endurance of the aircraft. This series focuses on high power to weight ratio as its core competitiveness, meeting diversified aviation needs. In the future, it will continue to expand its application scenarios through efficient power technology innovation, helping to upgrade the performance of UAV and deepen industry applications.
Details
The 550EF four cylinder horizontally opposed, air-cooled, two-stroke, electronic injection system, mixed lubrication, suitable for push and pull installation, electronic injection system oil supply, displacement of about 550 milliliters, power of 43kw, maximum speed of 7500rpm, weight of 15kg.
The 550 series two-stroke engine has high power to weight ratio, stable performance, and high market demand, and is suitable for various aircraft such as small fixed wing drones, rotary wing aircraft, and airships.
The 550EF is an electronic fuel injection two-stroke engine. After adopting the electronic fuel injection system, the engine's output power increases by 15% and fuel consumption decreases by 20% at the calibrated speed. The maximum flight altitude of the aircraft equipped with the engine is increased from 5000 meters to 7500 meters.
The 550EF adopts a horizontally opposed structure, which has the advantages of low noise and smoother aircraft flight. Meanwhile, the use of air cooling and mixed lubrication methods minimizes the weight of the engine to the greatest extent possible. In the future, by continuously developing new technologies such as more efficient power technologies, the performance of drones can be significantly improved, their application scope can be expanded, and they can meet the needs of more industries.
Product parameters
Power: 50HP/7500rpm
Cylinder diameter: 66mm/2.60inch
Journey: 40mm/1.57 inches
Displacement: 548cm3/33.44in3
Crankcase: Aluminum casting
Crankshaft: Seven piece combination
Piston: Aluminum alloy casting
Cylinder body: Aluminum casting, nickel silicon hardened coating on the inner wall
Engine control system: 12V, computer-controlled
Ignition system/fuel injection timing: variable (ECU controlled)
High altitude automatic compensation: ECU automatic control
Weight: 15kg
Fuel: 95 octane (unleaded) gasoline mixed with 50:1 two-stroke fully synthetic lubricating oil
Options: Starter (12V), Generator (14V, 95A, 5.2kg), Generator (28V, 45A, including transformer weighing 5.2kg)
（The above parameters are for reference only, and the real product parameters will be according to the delivery）
FAQ
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Q: How does the electronic injection improve fuel efficiency?
A: The computer-controlled fuel injection system dynamically adjusts mixture ratios, reducing waste by 20% compared to carbureted models.
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Q: Is it compatible with hybrid-electric UAV systems?
A: Yes, the 12V control system integrates seamlessly with hybrid power modules.
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Q: What maintenance intervals are required?
A: 200-hour service cycles with our proprietary mixed lubrication technology minimize downtime.
