10 - 50hp piston engine BE-50EFI

Product catalog summary

Engine Introduction
The BE-50EFI is a 275cc, two-stroke, four-cylinder, air-cooled engine with a horizontal layout, delivering a maximum power of 16KW. Key features include an electronic fuel injection system with altitude compensation, offering over 20% fuel savings compared to carburetor engines. It supports 360° installation without performance loss, uses a DC automatic timing CDI ignition system for easy starting and stability, and has a compact design with low noise and vibration. The engine is constructed with advanced materials for durability and uses gasoline, which is cost-effective and readily available. It supports various output connections for different devices and can accommodate propellers from 32 to 34 inches, suitable for UAVs, powered parachutes, delta wings, ultralight aircraft, and range extenders.

Technical Parameters
The BE-50EFI engine is a two-stroke, four-cylinder engine with a horizontal opposition layout. It has a cylinder diameter of 66mm, a travel of 40mm, and a working displacement of 550cc. The speed range is 1500-7500rpm, with a maximum power of 50hp (37KW) at 7500rpm. It features air cooling, a clockwise rotation facing the propeller, and uses 92-95 gasoline with a 40:1 fully synthetic lubricant. The engine components include an aluminum alloy cylinder with ceramic coating, an aluminum alloy crankcase, and a precision-forged crankshaft. The starter is 12V 400W, and the propeller size ranges from 28*24 to 34*18. The engine weighs 20.4kg including the starter, and 21.6kg with the starter and generator.

Ignition System
The ignition system is a DC CDI electronic ignition with an operating voltage of 12-15V. It uses an NGK BPMR6A spark plug with a gap of 0.6-0.7mm.

Combustion System
The combustion system features an electronic fuel injection system with a reed valve intake. The ECU control form is PWM, RS232, with an operating voltage of 12-15V.

Generator
The engine supports generators of 14V 350W, 28V 600W, 1000W, and 2000W. The generator type is a three-phase permanent magnet generator with rectification and DC voltage regulation. The transmission form is direct drive.

Catalog excerpts

BE-50EFI is a 275cc two-stroke, four-cylinder, air-cooling engine. It has a Horizontal layout, deriving a maximum power 16KW. The engine features are as follows: • Electronic fuel injection system, with advanced altitude compensation algorithm, can adapt to various high-altitude environments. • Comparing to engines with carburetors, BE-50EFI can save more than 20% fuel . The engine can be installed 360° in all directions without affecting performance; • Adopts DC automatic timing CDI ignition system, easy to start and high stability; • Horizontal layout, petit, low noise, small vibration. • The engine body adopts advanced precision casting cylinder, cylinder body constructed by ceramic, forged crankshaft, aluminum alloy casting piston, longer life expectancy and more durable ; • The engine is powered with Gasoline, easy to obtain and low in cost. • The starter is installed on the top of the machine body, which is convenient for starting, safe while also efficient;

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• The main output shaft can be installed with propellers and reducers; The rear shaft can be installed with a starter motor and coupling, etc. It can also provide a variety of output connection forms according to different power output devices, such as propellers, clutches, generators, etc., to meet the needs of different users; • Various types of generators can be selected to continuously provide power for the system ; • The BE-50EFI engine can be adapted to different types of propellers ranging from 32 to 34 inches, meeting the needs of various types of fixed-wing UAVs, powered parachutes,...

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