{{short description|Fuel-injected four-cylinder aircraft engine}} <!-- This article is a part of Wikipedia:WikiProject Aircraft. Please see Wikipedia:WikiProject Aircraft/page content for recommended layout. --> {{infobox aero engine |name=IO-346 |image= |caption= |engine_type=Piston aero-engine |national_origin= United States |manufacturer=Teledyne Continental Motors |first_run=1962 |produced= 1965-1969 |major_applications=Beechcraft Musketeer |developed_into = Continental IO-520 }}
The '''Continental IO-346''' engine is a fuel-injected four-cylinder aircraft engine that was developed especially for the Beechcraft Musketeer Custom III by Continental Motors. It was produced for that aircraft between 1965 and 1969.<ref name="Christy">Christy, Joe: ''Engines for Homebuilt Aircraft & Ultralights'', pages 63. TAB Books, 1983. {{ISBN|0-8306-2347-7}}</ref>
==Design and development==
There is no carbureted version of the engine, which would have been designated O-346 and therefore the base model is the IO-346.<ref name="Christy" /><ref name="CE3CE">{{cite web|url = http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/764ef6a32608a1cc8525670e0046d972/$FILE/E3ce.pdf|format = PDF|title = TYPE CERTIFICATE DATA SHEET NO. E3CE|accessdate = 2008-12-14|last = Federal Aviation Administration|authorlink = |date = November 1973|archive-url = https://web.archive.org/web/20110608090638/http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/764ef6a32608a1cc8525670e0046d972/$FILE/E3ce.pdf|archive-date = 2011-06-08|url-status = dead}}</ref>
The IO-346 was designed to run on 91-98 avgas. The engine has a dry weight of {{cvt|269.75|-|297|lb|0}} including the generator and starter. The ignition system consists of dual magnetos, one Scintilla S4RN-201 and one S4RN-205 or, alternatively, two Slick Electro 449 magnetos.<ref name="Christy" /><ref name="CE3CE" />
==Variants==
;IO-346-A :Base model, certified 27 July 1962<ref name="CE3CE" /> ;IO-346-B :Identical to IO-346-A except it incorporates provisions for a hydraulic propeller control. Certified 23 June 1964.<ref name="CE3CE" />
==Applications== [[File:BeechcraftA23MusketeerC-FSJL.jpg|thumb|right|1965 model Beechcraft A23 Musketeer equipped with the IO-346 engine]] *Beechcraft Musketeer<ref name="Christy" /> *Gadfly E.S 102<ref name="Christy" /> *Piel Emeraude<ref name="Christy" /> *Stampe SV-4D<ref name="Christy" /> <!-- ==Engines on display== -->
==Specifications (IO-346)== <small>Reference: ''Engines for Homebuilt Aircraft & Ultralights''<ref name="Christy" /></small> {{pistonspecs |<!-- If you do not understand how to use this template, please ask at Wikipedia talk:WikiProject Aircraft --> <!-- Please include units where appropriate (main comes first, alt in parentheses). If data are missing, leave the parameter blank (do not delete it). For additional lines, end your alt units with </li> and start a new, fully formatted line with <li> --> |type=4-cylinder air-cooled horizontally opposed aircraft piston engine |bore=5.25 in (133 mm) |stroke=4.00 in (102 mm) |displacement={{cvt|346|cuin|L|1}} |length=30 in (762 mm) |diameter= |width=33.38 in (848 mm) |height=22.4 in (569 mm) |weight=297 lb dry, with starter and generator (135 kg) |valvetrain=One intake and one exhaust valve per cylinder |supercharger= |turbocharger= |fuelsystem=CMC fuel injection |fueltype=91/98 octane avgas |oilsystem= |coolingsystem=Air-cooled |power={{cvt|165|hp}} at 2,700 rpm |specpower=0.47 hp/in³ (21.2 kW/L) |compression=7.5:1 |fuelcon= |specfuelcon= |oilcon= |power/weight=0.56 hp/lb (0.90 kW/kg) }}
==See also== *List of aircraft engines
==References== {{reflist}}
<!-- ==External links== -->
{{Continental aeroengines}}
Category:1960s aircraft piston engines Category:Boxer engines IO-346 Category:Four-cylinder engines Category:Air-cooled aircraft piston engines