Product Overview
GTF550 is a 550cc four‑cylinder 2‑stroke carburetor‑type gasoline engine designed for civil heavy‑lift UAV and commercial aviation platforms. Adopting capacitor discharge ignition and proven carburetor fuel delivery, this drone gasoline engine delivers stable and dependable power output. Equipped with integrated generator and electromagnetic clutch mounting structure, it realizes controllable power transmission. Compared with EFI versions, carburetor configuration brings lower maintenance threshold and cost advantages. Our engineering team supports customized modification for different aircraft installation demands.
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 | 530g/kW.h |
| Starting Mode & Voltage | Electric start, 22.2V (6S) |
| Cylinder Block | Aluminum alloy casting, inner wall electroplated Ni‑SiC |
| Dry Engine Weight | 18 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 achieves peak thrust of 72.37 kg and torque of 46.4 N·M. Thrust and torque rise steadily across 1200‑6000rpm working interval. The carburetor system provides consistent power output for heavy‑payload civil UAV during hovering, climbing and cruise flight. The reserved electromagnetic clutch structure allows users to realize power on‑off control by adding corresponding clutch assembly.
Application Scenarios
This 2‑stroke carburetor gasoline engine fits multiple civil‑oriented application cases:
Heavy‑payload commercial UAV platforms
Long‑endurance industrial inspection drones
Logistics & delivery UAV power system
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 GTF550 carburetor drone gasoline engine?
A: Please use 95‑grade gasoline mixed with fully synthetic 2‑stroke lubricating oil, follow 35:1 mixing ratio (gasoline to lubricant). Mineral two‑stroke oil is not recommended, it will increase carbon deposit inside carburetor and cylinder, shorten engine service life.
What are the differences between carburetor‑type and EFI UAV gasoline engine?
A: Carburetor version features simpler mechanical structure, lower spare‑part cost and easier on‑site maintenance. EFI versions perform better in high‑altitude environment and fuel‑economy. You can select suitable configuration based on your UAV operating environment and project budget.
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