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The ULPower UL390i is a Belgian aircraft engine, designed and produced by ULPower Aero Engines of Geluveld for use in homebuilt aircraft.[1]

UL390i
Type	Aircraft engine
National origin	Belgium
Manufacturer	ULPower

Design and development

The engine is a six-cylinder four-stroke, horizontally-opposed, 3,888 cc (237.3 cu in) displacement, air-cooled, direct-drive, gasoline engine design. It employs dual electronic ignition and produces 140 to 160 hp (104 to 119 kW) at 3300 rpm.[1]

Variants

UL390i

Base model with fuel injection and a compression ratio of 8.2:1, producing 140 hp (104 kW) at 3300 rpm[1][2]

UL390iS

Model with fuel injection and a 9.1:1 compression ratio, producing 160 hp (119 kW) at 3300 rpm[3]

UL390iA

Inverted oil system version of the UL390iS, producing 160 hp (119 kW) at 3300 rpm[4]

Specifications (UL390i)

Data from Tacke and manufacturer[1][2]

General characteristics

• Type: Six cylinder, four stroke aircraft engine
• Bore: 105.6 mm (4.2 in)
• Stroke: 74 mm (2.9 in)
• Displacement: 3,888 cc (237.3 cu in)
• Length: 723 mm (28.5 in)
• Width: 654 mm (25.7 in)
• Height: 472 mm (18.6 in)
• Dry weight: 100 kg (220.5 lb), ready to fly

Components

• Fuel system: fuel injection
• Fuel type: gasoline
• Cooling system: air
• Reduction gear: none

Performance

• Power output: 140 hp (104 kW) at 3300
• Compression ratio: 8.16:1

See also

Aircraft of comparable role, configuration, and era

• CAMit 3300
• Jabiru 3300

Related lists

• List of aircraft engines

References

External links

• Official website

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