ULPower UL390i

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

See also

Aircraft of comparable role, configuration, and era

Related lists

References
  1. Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, pages 262-263. Flying Pages Europe SARL, 2015. ISSN 1368-485X
  2. ULPower Aero Engines. "UL390i". ulpower.com. Retrieved 21 April 2018.
  3. ULPower Aero Engines. "UL390iS". ulpower.com. Retrieved 21 April 2018.
  4. ULPower Aero Engines. "UL390iSA". ulpower.com. Retrieved 21 April 2018.
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