Product Overview
GTE550‑EFI is a 550cc four‑cylinder 2‑stroke electronic fuel injection gasoline engine with direct‑drive configuration, built for civil heavy‑payload UAV and commercial aviation platforms. Without clutch mechanism, this drone gasoline engine achieves significant weight reduction. It adopts capacitor discharge ignition together with mature EFI control unit for dependable continuous‑run performance. The integrated generator meets high onboard power demand for various payload devices. Our factory can carry out custom modification to satisfy diverse aircraft installation and performance requirements.
Main Technical Specifications
| Item | Specifications |
|---|---|
| Displacement | 550cc (137.5cc*4) |
| RPM Operating Range | 1200‑7000 rpm |
| Recommended Propeller | 30×25, 32×20, 33×20 (Two‑blades) |
| Max Power | 50HP (37kW) @7300rpm |
| Generator Output | DC28.5V, 1000W @5500rpm |
| Ignition System | Capacitor discharge ignition |
| Fuel Consumption | 480g/kW.h |
| Starting Mode & Voltage | Electric start, 22.2V (6S) |
| Cylinder Block | Aluminum alloy casting, inner wall electroplated Ni‑SiC |
| Dry Engine Weight | 17.5 kg |
| Max Tensile Thrust | 72.4 kg @5760 rpm |
| Required Fuel | 95# gasoline + Fully synthetic 2‑stroke lubricating oil |
| Fuel‑Oil Mix Ratio | Gasoline : Lubricating oil = 35 : 1 |
Performance Characteristic
At 5760 RPM, this UAV engine delivers peak thrust of 72.37 kg and torque of 46.4 N·M. Thrust and torque increase steadily across the 1200‑6000 rpm operating zone. Thanks to direct‑drive structure, power transmission loss is minimized. It offers responsive power output suitable for heavy‑payload civil UAV during hovering, climbing and cruise flight.
Application Scenarios
This direct‑drive 2‑stroke EFI gasoline engine is well‑suited for multiple civil‑focused projects:
Heavy‑payload commercial UAV platforms
Long‑endurance industrial inspection drones
Cargo transport UAV power solution
Large‑size civil drone system integration
Custom light aviation power projects
Customized development service is available. We can adjust parameters, mounting interfaces and auxiliary structures according to customer‑specific integration requirements.
FAQ
What fuel and lubricant should I use for the GTE550‑EFI direct‑drive drone gasoline engine?
A: Please use 95‑grade gasoline mixed with fully synthetic 2‑stroke lubricating oil. The mixing ratio is 35:1 (gasoline to lubricating oil). Avoid mineral‑based two‑stroke oil, as it will accelerate internal component wear and shorten engine service life.
What are the main benefits of direct‑drive UAV engine compared with clutch‑type versions?
A: Direct‑drive design removes clutch components, reducing total engine weight and power transmission loss. It features simpler mechanical structure, fewer wearing parts and lower maintenance cost. This configuration is preferred for weight‑sensitive UAV projects.
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