Product Overview
The WGT550 is a 550cc horizontally opposed four-cylinder 2-stroke liquid-cooled gasoline power unit independently developed by Shandong Zhongtian Power Technology Co., Ltd., specially tailored for medium & large commercial unmanned aerial vehicles, light experimental aircraft and heavy-payload industrial aviation equipment.
Different from traditional air-cooled drone engines, this UAV gasoline engine uses closed liquid circulation cooling to solve overheating issues under continuous full-throttle flight. Its symmetrical horizontal opposed cylinder structure counteracts reciprocating vibration, greatly improving flight stability and protecting precision on-board detection equipment. Equipped with built-in power generation module and mature CDI ignition system, it integrates power output and reliable ignition functions in one compact body, becoming an all-in-one propulsion solution for long-endurance commercial UAV projects.
Main Performance Highlights
1. Balanced Horizontal Opposed Four-Cylinder 2-Stroke Architecture
The engine features a symmetrical horizontally opposed four-cylinder layout with 58mm bore and 52mm stroke, total displacement reaching 550cc. The symmetrical piston movement offsets most mechanical vibration compared with twin-cylinder or inline UAV engines, reducing vibration interference to avionics and payload sensors. It delivers linear throttle response, stable power from low to high RPM, meeting the power demand of takeoff, climb and cruise flight phases of heavy-load drones.
2. Efficient Liquid Cooling for Continuous High-Load Operation
Adopting liquid circulation cooling design instead of conventional air cooling, the WGT550 maintains constant working temperature even during hours of continuous high-power flight. It avoids power attenuation and component aging caused by high temperature, suitable for tropical, plateau and high-temperature working environments. The compact cooling pipeline layout will not occupy extra airframe installation space, balancing heat dissipation efficiency and space utilization.
3. Built-In 14V Stable Power Generation Module
An integrated generator is embedded inside the drone gasoline engine, outputting steady 14V 300W power at 5000rpm. It can directly supply electricity for flight control systems, high-definition mapping cameras, environmental monitoring sensors, spray pumps and other on-board equipment. Customers no longer need to configure independent battery power supply for payloads, simplifying UAV circuit design and reducing whole machine weight.
4. Stable DC CDI Ignition & Low Fuel Cost
Equipped with single DC CDI capacitor discharge ignition system, the engine realizes fast, consistent ignition at low temperature and high altitude without manual tuning. It supports widely available 92# unleaded gasoline, no special aviation fuel required, significantly lowering long-term fuel expenditure for commercial operation teams.
Complete Technical Specification Table
| Technical Parameter | Verified Standard Value |
|---|---|
| Product Model | WGT550 |
| Engine Type | Horizontally Opposed 4-Cylinder, 2-Stroke, Liquid-Cooled Gasoline UAV Engine |
| Total Displacement | 550cc |
| Bore × Stroke | 58mm × 52mm |
| Maximum Output Power | 45HP @ 6500rpm |
| Peak Torque | 42N·m @ 6000rpm |
| Ignition System | Single DC CDI Ignition |
| Built-In Generator Output | 14V 300W at 5000rpm |
| Applicable Fuel | 92# Unleaded Gasoline |
| Dry Engine Weight | 19kg |
Wide Application Scenarios
- Large logistics cargo delivery fixed-wing UAVs
- Aerial mapping, topographic survey and environmental monitoring industrial drones
- Heavy-load agricultural plant protection & aerial spraying UAV platforms
- Long-endurance coastal and forest patrol unmanned aircraft
- Light experimental civil aviation aircraft and VTOL composite wing drones
Packaging & Global Shipping
We provide full set of international logistics services for global clients, supporting multiple mainstream shipping channels:
- EMS
- FedEx Express
- DHL
- UPS
All engines are packed with shock-absorbing foam and reinforced wooden case to prevent collision damage during long-distance sea and air transportation. Customized packaging and bulk order discount solutions are available, please contact our sales team to get accurate shipping quotation and delivery cycle.
Frequently Asked Questions (FAQ)
Q1: Is this UAV gasoline engine able to work stably for long hours under high temperature environments?
A: Yes. This drone gasoline engine adopts professional liquid cooling circulation system, which can continuously control the internal operating temperature of the engine even under high-temperature outdoor conditions. It effectively avoids power drop and component wear caused by overheating, supporting continuous long-hour flight missions such as aerial survey and agricultural spraying.
Q2: Does this UAV engine need an extra power battery to drive mission payloads like cameras or spray pumps?
A: No extra independent power battery is required. The WGT550 UAV engine is equipped with an integrated generator that outputs stable 14V 300W power at 5000rpm. It can directly supply power for flight controllers, mapping cameras, spray pumps and various detection payloads, simplifying the overall circuit layout of your drone and reducing extra dead weight.
