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Four-stroke gasoline engine
Four-stroke engine
Stable and efficient operation, with fuel savings and reduced consumption; low noise, clean and environmentally friendly, delivering strong, high-torque output.
Two-stroke gasoline engine
Two-stroke engine
The machine is stable and reliable, with powerful, sustained performance, smooth operation, and minimal vibration, delivering a continuous flow of power.
About Us
Changsha Guanghua Aviation Technology Co., Ltd.
Changsha Guanghua Aviation Technology Co., Ltd. (Abbreviation: Guanghua Aviation) was founded in Sept 2010. The company focuses on the research and development, production and sales of scientific aircraft model engine and UAV engines.The company is a self-operated export high-tech enterprises. "NGH" is the registered trademark of the company's engine products, and applied for the registration of the international trademarks in the United States and the European Union.
Date of establishment
Cumulative number of patents
Independently developed products
News Updates
Stay updated on Guanghua Aviation’s exciting developments: we independently develop low-altitude aviation propulsion systems and, leveraging our innovative capabilities, deliver premium integrated unmanned aerial vehicle power solutions.
11-10
New product officially launched: NGH GF45 45cc four-stroke gasoline engine
NGH’s All-New 45cc Four-Stroke Gasoline Engine — Officially Launched! This is more than just a simple product update; it redefines ultimate performance and lightweight design. Meticulously refined by our R&D team, the GF45 delivers outstanding power output and exceptional stability, making its debut in the model aircraft community! The GF45 perfectly balances “stable performance” with a “lightweight airframe”: Displacement: 45cc — Ample power reserve to effortlessly handle large propellers Max Output: 3.7HP / 8000rpm — Powerful output for impressive thrust-to-weight ratio RPM Range: 1600 - 8000rpm — Wide operating range: stable at low speeds, explosive at high speeds Engine Weight: Only 1246g — All-metal integrated body achieves extreme lightness, leaving more payload capacity Ignition Power Supply: DC 6V-14.4V / 1000mAh — Wide voltage compatibility, fits mainstream batteries Engine Model: GF45 Engine Type: Horizontally Opposed Four-Stroke Gasoline Engine Displacement: 45cc RPM Range: 1600-8000rpm Recommended Propellers: 19x10, 21x8 (two-blade propellers) Max Power: 3.7HP / 8000rpm Ignition Power Supply: DC 6V-14.4V 1000mAh Igniter Weight: 100g Engine Weight: 1246g Fuel: 92# Gasoline + Fully Synthetic 2T Oil Gasoline:Oil Mix Ratio: 35:1 These high-definition detail shots reveal the GF45’s solid materials and exquisite craftsmanship: Efficient Cooling: Annular fin design keeps the engine cool even under prolonged heavy loads Precision Carburetor: Equipped with a high-performance carburetor and precise throttle control for rapid response and linear power delivery Dedicated Ignition System: Features a custom NGH electronic igniter (weighing only 100g) for accurate sparking and easy starting Complete Accessories: The launch package includes not only the engine itself but also a thoughtful blue NGH metal mounting bracket, high-quality spark plug, and a full wiring harness/ignition module set—ready to use right out of the box! Optimal Displacement for Perfect Fit The GF45’s 45cc displacement represents one of the most ideal ranges available today for propulsion systems: Recommended Propellers: 19x10 or 21x8 two-blade props Fuel Standard: Use 92# gasoline mixed with fully synthetic 2-stroke oil Mix Ratio: 35:1 (gasoline:oil). Excellent fuel economy and lubrication ensure worry-free flights every time. The NGH GF45 is more than just an engine—it’s a reliable partner designed to deliver high performance, extended flight times, and strong payload capabilities. Built specifically for model aircraft enthusiasts, it is a trusted, top-choice solution.
2026-11-10
10-20
Field flight test of the GF60i2 twin-cylinder four-stroke model aircraft engine
Practical speed: 1200–7500 rpm Maximum power: 5.1 HP at 8000 rpm Low operating vibration, smooth power delivery, and excellent fuel efficiency.
2026-10-20
05-26
Over several days of exhibitions and exchanges, we not only earned a strong reputation and seized new opportunities, but also gathered valuable industry insights and customer feedback. Looking ahead, we will carry forward the gains and aspirations from this event, staying true to our original mission and striving for continuous improvement. We will redouble our efforts in product innovation, quality control, and service enhancement, responding to every trust with even greater expertise and superior value.
2026-05-26
02-04
GTF550 Two-Stroke Horizontally Opposed Gasoline Engine
NGH is renowned for manufacturing high‑quality gasoline engines. The GTF550, a four‑cylinder horizontally opposed, two‑stroke, air‑cooled gasoline engine, was specially developed by NGH engineers for drones and ultralight experimental aircraft. Its classic, meticulously engineered design delivers low vibration, high power output, light weight, and long service life. Rapid throttle response ensures smooth, linear power delivery, providing your aircraft with stable, robust propulsion and an unprecedented flying experience.
2024-02-04
03-07
GF150R5 five-cylinder radial four-stroke gasoline engine
NGH is renowned for manufacturing high‑quality gasoline engines and is China’s first factory to independently research, develop, and produce small, multi‑cylinder, four‑stroke gasoline engines. The GF150R5 is a professional‑grade four‑stroke gasoline engine engineered by NGH specifically for RC aircraft and fixed‑wing drones, offering high performance with low fuel consumption, strong torque and reduced noise, all within a compact design and an elegant appearance.
2023-03-07
04-01
Electric Engine Start – GTT70 & GF60i2
GTT70 GF60i2 twin-cylinder model aircraft gasoline engine with electric start
2022-04-01
+86 189 4066 2220
xhlgjywb@163.com
Building B5, Changsha E Center, No. 18 Xiangtai Road, Liuyang Economic and Technological Development Zone, Changsha City, Hunan Province