The ULPower UL390i is a
Belgian aircraft engine
An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years many ...
, designed and produced by
ULPower Aero Engines of
Geluveld
Zonnebeke (; vls, Zunnebeke) is a municipality located in the Belgian province of West Flanders. The municipality comprises the villages of , , Passendale, Zandvoorde and Zonnebeke proper. On January 1, 2006, Zonnebeke had a total population of ...
for use in
homebuilt aircraft
Homebuilt aircraft, also known as amateur-built aircraft or kit planes, are constructed by persons for whom this is not a professional activity. These aircraft may be constructed from "scratch", from plans, or from assembly kits.Armstrong, Kenn ...
.
[Tacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', pages 262-263. Flying Pages Europe SARL, 2015. ]
Design and development
The engine is a six-cylinder
four-stroke
A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...
,
horizontally-opposed, displacement, air-cooled, direct-drive, gasoline engine design. It employs dual
electronic ignition and produces at 3300 rpm.
Variants
;UL390i
:Base model with fuel injection and a
compression ratio
The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values.
A fundamental specification for such engines, it is measured two ways: the stati ...
of 8.2:1, producing at 3300 rpm
;UL390iS
:Model with fuel injection and a 9.1:1 compression ratio, producing at 3300 rpm
;UL390iA
:Inverted oil system version of the UL390iS, producing at 3300 rpm
Specifications (UL390i)
See also
References
External links
*
{{ULPower Aero Engines
ULPower aircraft engines
Air-cooled aircraft piston engines
2010s aircraft piston engines