This article is about the 2008 fuel-injected aircraft engine. For the 1940 carbureted aircraft engine, see Lycoming O-233.
The Lycoming IO-233 is a non-certified four-cylinder, air-cooled, horizontally opposed piston aircraft engine that produces between 100 hp (75 kW) and 116 hp (87 kW).[1]
The IO-233 was announced by the company at AirVenture on 28 July 2008 as a new engine for light sport aircraft. The engine was conceived as a lightened version of the Lycoming O-235 by company engineers who were building their own kit LSAs and found that there was no powerplant that met their requirements for power output and weight, with the ability to burn either 100LL avgas or unleaded automotive fuel.[1]
The resulting engine weighs less than the O-235 and incorporates a throttle body injector system with a tuned intake manifold and dual electronic ignition, or optionally a carburetor in place of the throttle body injector to save further cost and weight. The engine has a 2400-hour time between overhauls. Additional features include a lightweight 14 volt alternator, an optimized oil sump, a streamlined accessory housing, a lightweight starter and roller tappets.[1][3][4]
When announced in July 2008 Lycoming expected the engine to be available later that year, once ASTM testing for LSA use was completed. The company also contemplated certifying the engine in 2009. There is no indication that certification has been completed.[1]
At AirVenture 2011, the company announced that the engine was commencing volume production and was flying in both fuel-injected and carbureted versions.[4]
Renegade Light Sport's Falcon LS was the first airplane to fly with Lycoming's new IO-233-LSA engine on 6 Oct 2010.[5]
Renegade Light Sport is working with Lycoming to produce an aerobatic version of the IO-233-LSA engine to be designated as the AEIO-233. The design goals include fuel injection, an inverted sump and that it be capable of +9/-3 Gs.[6]
Variants
IO-233-LSA
Initial version, 100 hp (75 kW) at 2400 rpm to 116 hp (87 kW) at 2800 rpm[3]
^ abcLycoming Engines (July 2008). "The IO-233-LSA" (PDF). Retrieved 2009-04-04.
^ abcdBertorelli, Paul (July 2011). "Video: Lycoming's O-233 Takes Flight". AVweb. Retrieved 27 July 2011.
^. Archived from the original on 2011-11-09. Retrieved 2011-11-23.
^"Renegade Light Sport developing acro engine for LSA". General Aviation News. Retrieved 2011-11-23.
^Renegade Light Sport (2011). . Archived from the original on 3 December 2011. Retrieved 21 November 2011.
External links
Wikimedia Commons has media related to Lycoming IO-233.
Textron Lycoming - Manufacturer's home page
Spec sheet showing images of IO-233
March 08, 2023
lycoming, this, article, about, 2008, fuel, injected, aircraft, engine, 1940, carbureted, aircraft, engine, lycoming, certified, four, cylinder, cooled, horizontally, opposed, piston, aircraft, engine, that, produces, between, 233io, light, sport, aircraft, en. This article is about the 2008 fuel injected aircraft engine For the 1940 carbureted aircraft engine see Lycoming O 233 The Lycoming IO 233 is a non certified four cylinder air cooled horizontally opposed piston aircraft engine that produces between 100 hp 75 kW and 116 hp 87 kW 1 IO 233IO 233 LSA light sport aircraft engine Type Piston aero engineNational origin United StatesManufacturer Lycoming EnginesFirst run 2008Major applications Tecnam P92 EagletProduced 2008 presentDeveloped from Lycoming O 235The IO 233 is a development of the Lycoming O 235 which is itself a derivative of the older Lycoming O 233 engine 2 Contents 1 Development 2 Variants 3 Applications 4 Specifications IO 233 LSA 4 1 General characteristics 4 2 Components 4 3 Performance 5 References 6 External linksDevelopment Edit Lycoming IO 233 installation in a FK Comet The IO 233 was announced by the company at AirVenture on 28 July 2008 as a new engine for light sport aircraft The engine was conceived as a lightened version of the Lycoming O 235 by company engineers who were building their own kit LSAs and found that there was no powerplant that met their requirements for power output and weight with the ability to burn either 100LL avgas or unleaded automotive fuel 1 The resulting engine weighs less than the O 235 and incorporates a throttle body injector system with a tuned intake manifold and dual electronic ignition or optionally a carburetor in place of the throttle body injector to save further cost and weight The engine has a 2400 hour time between overhauls Additional features include a lightweight 14 volt alternator an optimized oil sump a streamlined accessory housing a lightweight starter and roller tappets 1 3 4 When announced in July 2008 Lycoming expected the engine to be available later that year once ASTM testing for LSA use was completed The company also contemplated certifying the engine in 2009 There is no indication that certification has been completed 1 At AirVenture 2011 the company announced that the engine was commencing volume production and was flying in both fuel injected and carbureted versions 4 Renegade Light Sport s Falcon LS was the first airplane to fly with Lycoming s new IO 233 LSA engine on 6 Oct 2010 5 Renegade Light Sport is working with Lycoming to produce an aerobatic version of the IO 233 LSA engine to be designated as the AEIO 233 The design goals include fuel injection an inverted sump and that it be capable of 9 3 Gs 6 Variants EditIO 233 LSA Initial version 100 hp 75 kW at 2400 rpm to 116 hp 87 kW at 2800 rpm 3 Applications EditAeris Naviter AN 2 Enara Dakota Cub Super 18 Denney Kitfox 4 Foxcon Terrier 200 Renegade Falcon LS 4 7 Tecnam P92 World Aircraft SpiritSpecifications IO 233 LSA EditData from Lycoming Specification Sheet 3 General characteristics Type direct drive four cylinder aircraft piston engine Bore 4 375 in 111 1 mm Stroke 3 875 in 98 4 mm Displacement 233 3 in 3 82 L Length 26 968 in 685 0 mm Width 31 928 in 811 0 mm Height 20 571 in 522 5 mm Dry weight 200 lb 91 kg to 210 lb 95 kg Components Valvetrain Pushrod actuated valves Fuel system throttle body injector Fuel type 100LL avgas or autofuel Oil system dry sump Cooling system air cooledPerformance Power output 100 hp 75 kW at 2400 rpm 116 hp 87 kW at 2800 rpm Specific power 0 43 hp in 19 6 kW L Compression ratio 8 1 1 Fuel consumption 5 25 USgal h 19 9 L h Power to weight ratio 0 50 hp lb 0 82 kW kg References Edit a b c d Lycoming Engines July 2008 Lycoming Engines Launches the IO 233 LSA Archived from the original on 2010 11 26 Retrieved 2009 04 03 Federal Aviation Administration December 2003 TYPE CERTIFICATE DATA SHEET NO E 223 PDF Retrieved 2008 11 30 a b c Lycoming Engines July 2008 The IO 233 LSA PDF Retrieved 2009 04 04 a b c d Bertorelli Paul July 2011 Video Lycoming s O 233 Takes Flight AVweb Retrieved 27 July 2011 Renegade Falcon LS Archived from the original on 2011 11 09 Retrieved 2011 11 23 Renegade Light Sport developing acro engine for LSA General Aviation News Retrieved 2011 11 23 Renegade Light Sport 2011 Engine Options Archived from the original on 3 December 2011 Retrieved 21 November 2011 External links Edit Wikimedia Commons has media related to Lycoming IO 233 Textron Lycoming Manufacturer s home page Spec sheet showing images of IO 233 Retrieved from https en wikipedia org w index php title Lycoming IO 233 amp oldid 1127816394, wikipedia, wiki, book, books, library,
