Continental IO-520
{{short description|Family of flat-six piston aircraft engines}}
{{Refimprove|date=November 2012}}
| {{Infobox Aircraft Begin
|name=O-520 |image=Continental IO-520 2.jpg |caption=Preserved IO-520 }}{{Infobox Aircraft Engine |type=Piston aircraft engine |national origin=United States |manufacturer= Teledyne Continental Motors |first run= 1963 |produced= 1964-present |major applications= Beechcraft Bonanza |number built = |program cost = |unit cost = |developed from = Continental IO-346 |variants with their own articles = |developed into = Continental IO-550 }} |
The Continental IO-520 is a six-cylinder, horizontally opposed aircraft engine produced by Teledyne Continental Motors. First run in 1963 as a development of the IO-346, it has been produced in versions incorporating fuel injection (IO-520), turbo-charging (TSIO-520), and gearing (GTSIO-520).
Design and development
The IO-520 series engines normally produce {{convert|285|to|310|hp|-1}} and are used in numerous aircraft such as certain models of the Bellanca Viking 300 and Super Viking, the Beech Bonanza and Baron, and Cessna 185- 206-, 210-, 310-, and 400-series aircraft. The IO-520 remained in production in 2019.{{cite web|url = http://continentalmotors.aero/engines/500.aspx|title = 500 Series Engines|access-date = 8 November 2022|author=Continental Aerospace Technologies|author-link=Continental Aerospace Technologies|work = continentalmotors.aero|year=2022|archive-url= https://archive.today/20221108141454/http://www.continental.aero/engines/500.aspx|archive-date= 8 November 2022|url-status= live}}
The geared GTSIO-520's most common applications are the twin-engine Cessna 404 and 421, where it is rated at {{convert|375|hp|abbr=on}}. The 'G' prefix indicated the incorporation of propeller reduction gearing.
Variants
=IO-520=
=TSIO-520=
;TSIO-520-AE: {{convert|250|hp|kW|0|abbr=on}}
;LTSIO-520-AE: {{convert|250|hp|kW|0|abbr=on}}
;TSIO-520-AF: {{convert|310|hp|kW|0|abbr=on}}
;TSIO-520-BE: {{convert|310|hp|kW|0|abbr=on}}
;TSIO-520-C: {{convert|265|hp|kW|0|abbr=on}}
;TSIO-520-CE: {{convert|325|hp|kW|0|abbr=on}}
;TSIO-520-E: {{convert|300|hp|kW|0|abbr=on}}
;TSIO-520-EB: {{convert|300|hp|kW|0|abbr=on}}
;TSIO-520-H: {{convert|265|hp|kW|0|abbr=on}}
;TSIO-520-U: {{convert|300|hp|kW|0|abbr=on}}
;TSIO-520-UB: {{convert|300|hp|kW|0|abbr=on}}
=GTSIO-520=
;GTSIO-520-D: 375 hp (280 kW) (Cessna 421)
;GTSIO-520-F: {{convert|435|hp|kW|0|abbr=on}}
;GTSIO-520-H: 375 hp (280 kW) (Cessna 421B)
;GTSIO-520-K: {{convert|435|hp|kW|0|abbr=on}}
;GTSIO-520-L: 375 hp (280 kW) (Cessna 421C)
;GTSIO-520-M: 375 hp (280 kW) (Cessna 404)
;GTSIO-520-N: 375 hp (280 kW) (Cessna 421C)
;GTSIO-520-S: 375 hp (280 kW) (Tecnam P2012 Traveller)
Applications
{{columns-list|colwidth=30em|
- Aero Commander 685
- Beechcraft Bonanza
- Beechcraft Baron 58P
- Bellanca Skyrocket II
- Bellanca Viking (17-30 and 17-30A)
- Cessna 185
- Cessna 188
- Cessna 206
- Cessna 207
- Cessna 210
- Cessna 303
- Cessna 310
- Cessna 335
- Cessna 340
- Cessna 402
- Cessna 404
- Cessna 414
- Cessna 421
- Meyers 200D
- Navion H Rangemaster
- Piper PA-46-310P Malibu
- St-Just Super-Cyclone
- Tecnam P2012 Traveller
- Viper Aircraft Viperfan
- Wise GT-400
}}
Specifications (GTSIO-520-D)
{{pistonspecs|
|type=6-cylinder horizontally opposed aircraft engine
|bore={{cvt|5.25|in}}
|stroke={{cvt|4.00|in}}
|displacement={{cvt|520|cuin|L|1}}
|length=63.63 in (161.6 cm)
|diameter=
|width=34.04 in (86.5 cm)
|height=26.63 in (67.6 cm)
|weight=484 lb (219.5 kg) without accessories
|valvetrain=Overhead valve
|supercharger=
|turbocharger=
|fuelsystem=TCM fuel injection
|fueltype=100/130 Octane avgas
|oilsystem=
|coolingsystem=Air-cooled
|power=375 hp (280 kW) (Maximum continuous operation at 3,400 rpm)
|specpower=
|compression=7.5:1
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight=0.77 hp/lb (1.27kW/kg)
|designer=
|reduction_gear=
|general_other=
|components_other=
|performance_other=
}}
See also
References
{{Reflist}}