Overview
VA-EN500I is a high-power UAV piston engine designed for heavy-payload and high-performance unmanned platforms. Equipped with electronic fuel injection (EFI) and digital dual ignition, it delivers precise fuel control, stable power output, and reliable performance for demanding UAV missions.
Engine Highlights
4-cylinder and 4-stroke horizontally-opposed
Water cooled (cylinder head) and air cooled (cylinder)
EFI Electronic fuel injection
Corrosion resistance
Important Parameters
| Displacement (ml) | 1352 | ||||||
| Dimension (mm) | 630×580×425 | ||||||
| Dry Weight (kg) | 64.9 | ||||||
| Maximum Power(kW/(r/min) | 73.5/5800 | ||||||
| Maximum Continuous Power (kW/(r/min) | 69/5500 | ||||||
| Power Weight Ratio (kW/kg) | 1.13 | ||||||
| Power Supply | 1.17 | ||||||
| Compression Ratio | 11:1 | ||||||
| Start Mode | Electrical Starter | ||||||
| Ignition | Digital Dual Ignition | ||||||
| Fuel Supply Mode | EFI | ||||||
| Fuel Type | 95#gasoline | ||||||
| Cooling Mode | Water cooled(cylinder head) and aircooled(cylinder) | ||||||
| TBO(h) | 2000 |
VA-EN500l Power Chart


Performance data may vary depending on operating conditions and configuration.
Application Scenarios
Hybrid VTOL Fixed-Wing UAV
VA-EN300 is optimized for hybrid VTOL fixed-wing UAVs, enabling vertical takeoff and landing combined with efficient fixed-wing cruise for long-endurance missions.
Heavy-Payload UAV Platforms
With strong and stable power output, VA-EN300 supports heavy-payload UAV platforms carrying sensors, communication equipment, or specialized mission systems.
Professional After-Sales Support
Basic Support
UAV Engine Deployment & Flight Support Services
On-Site Engine Maintenance Services
After-Sales Spare Parts Supply
Engine Operation & Maintenance Training
Extended Support
Comprehensive UAV Project Support
Engine Maintenance & Lifecycle Services
Batch Installation & Modification Support
Engine System Support Solutions
Spare Parts Sharing Platform
Technical Materials & Component Supply
Contact for More Information
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