{{Use dmy dates|date=April 2018}} <!-- This article is a part of Wikipedia:WikiProject Aircraft. Please see Wikipedia:WikiProject Aircraft/page content for recommended layout. --> {{infobox aero engine | name= UL390i | image= | caption= |engine_type=Aircraft engine |manufacturer=ULPower |designer= |national_origin=Belgium |first_run= |major_applications= |produced= |number_built= |developed_from= |variants_with_their_own_articles= }} The '''ULPower UL390i''' is a Belgian aircraft engine, designed and produced by ULPower Aero Engines of Geluveld for use in homebuilt aircraft.<ref name="WDLA15">Tacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', pages 262-263. Flying Pages Europe SARL, 2015. {{ISSN|1368-485X}}</ref>
==Design and development== The engine is a six-cylinder four-stroke, horizontally-opposed, {{convert|3888|cc|cuin|1|abbr=on}} displacement, air-cooled, direct-drive, gasoline engine design. It employs dual electronic ignition and produces {{convert|140|to|160|hp|kW|0|abbr=on}} at 3300 rpm.<ref name="WDLA15"/> <!-- ==Operational history== -->
==Variants== ;UL390i :Base model with fuel injection and a compression ratio of 8.2:1, producing {{convert|140|hp|kW|0|abbr=on}} at 3300 rpm<ref name="WDLA15"/><ref name="ul">{{cite web|url=http://ulpower.com/en/engines/ul390/ul390i|title=UL390i|author=ULPower Aero Engines|website=ulpower.com|access-date=21 April 2018}}</ref> ;UL390iS :Model with fuel injection and a 9.1:1 compression ratio, producing {{convert|160|hp|kW|0|abbr=on}} at 3300 rpm<ref>{{cite web|url=http://ulpower.com/en/engines/ul390/ul390is|title=UL390iS|author=ULPower Aero Engines|website=ulpower.com|access-date=21 April 2018}}</ref> ;UL390iA :Inverted oil system version of the UL390iS, producing {{convert|160|hp|kW|0|abbr=on}} at 3300 rpm<ref>{{cite web|url=http://ulpower.com/en/engines/ul390/ul390isa|title=UL390iSA|author=ULPower Aero Engines|website=ulpower.com|access-date=21 April 2018}}</ref> <!-- ==Applications== --> <!-- ==Survivors== --> <!-- Engines on display== -->
==Specifications (UL390i)== {{pistonspecs| |ref=Tacke and manufacturer<ref name="WDLA15"/><ref name="ul"/> |type=Six cylinder, four stroke aircraft engine |bore={{convert|105.6|mm|in|1|abbr=on}} |stroke={{convert|74|mm|in|1|abbr=on}} |displacement={{convert|3888|cc|cuin|1|abbr=on}} |length={{convert|723|mm|in|1|abbr=on}} |diameter= |width={{convert|654|mm|in|1|abbr=on}} |height={{convert|472|mm|in|1|abbr=on}} |weight={{convert|100|kg|lb|1|abbr=on}}, ready to fly |valvetrain= |supercharger= |turbocharger= |fuelsystem=fuel injection |fueltype=gasoline |oilsystem= |coolingsystem=air |power={{convert|140|hp|kW|0|abbr=on}} at 3300 |specpower= |compression=8.16:1 |fuelcon= |specfuelcon= |oilcon= |power/weight=
|designer= |reduction_gear=none
|general_other= |components_other= |performance_other= }}
==See also== {{aircontent <!-- include as many lines are appropriate. additional lines/entries with carriage return. --> |see also= |related=<!-- related developments --> |similar aircraft=*CAMit 3300 *Jabiru 3300 |lists= *List of aircraft engines }}
==References== {{Reflist}}
==External links== *{{Official website|http://ulpower.com/en/engines/ul390}}
{{ULPower Aero Engines}}
Category:ULPower aircraft engines Category:Air-cooled aircraft piston engines Category:2010s aircraft piston engines Category:Boxer engines Category:Six-cylinder engines