Lycoming O-540


Lycoming O-540

The Lycoming O-540 is a family of six-cylinder, horizontally opposed fixed-wing aircraft and helicopter engines of 541.5 cubic inch (8.87 l) displacement, made by Lycoming Engines. The engine is a six-cylinder version of the four-cylinder Lycoming O-360.

Generally these engines produce 230 to 350 horsepower (170 to 260kW). They are installed on a large number of different aircraft types, including Piper PA-31 Navajos and Chieftains, the Piper Aerostar line of aircraft, some of the larger single-engine Cessnas, Piper Aztecs, Piper Saratogas, Piper PA-24 Comanches, Britten-Norman Islanders and Trislanders, Robinson R44 and some Hiller UH-12 helicopters, Socata TB-20s and TB-30s, Dornier Do 28s, some Piaggio P.166 models, Gippsland GA8s and GA200s, and many Aero Commanders. Their main competitive engine is the Continental IO-520 and IO-550 series.

The AEIO version was developed for high-performance competition aerobatics aircraft. Starting at convert|260|hp|abbr=on, the power was then improved to convert|300|hp|abbr=on. The AEIO-540 family has achieved tremendous results in competition aircraft such as the Extra 300, CAP 232 and Zivko Edge 540.

Variants

All engines have an additional prefix preceding the "540" to indicate the specific configuration of the engine. There are also numerous engine suffixes, denoting different accessories such as different manufacturers' carburetors, or different magnetos.

;O-540:Standard, direct-drive, normally-aspirated Opposed engine, equipped with a carburetor.;IO-540:Normally-aspirated engine with fuel Injection.;AEIO-540:Normally-aspirated engine with fuel injection and inverted lubrication for Aerobatic use.;TIO-540:Turbocharged and fuel-injected.;LTIO-540:Left-hand (opposite-direction) rotation, turbocharged, fuel-injected; used as the right-hand engine on Piper PA-31-325 Navajo C/Rs and Piper PA-31-350 Chieftains [ [http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/a232db9090bf1f928625720a00551549/$FILE/A20SO.pdf FAA Piper PA-31-300/325/350 Type Certificate.] Retrieved: 1 September 2008.] to prevent critical engine control issues.;IGO-540:Gearbox at the front end of the crankshaft to drive the propeller fewer revolutions per minute than the engine, normally-aspirated with fuel injection.;IGSO-540:Supercharger driven by the engine, gearbox to drive propeller, and fuel injection (up to 435hp).;VO-540:Vertically-mounted engine for use in a helicopter, normally aspirated and equipped with a carburetor.;IVO-540:Normally-aspirated engine with fuel injection, mounted vertically for use in a helicopter.;TVO-540:Turbocharged engine equipped with a carburetor, mounted vertically for use in a helicopter.;TIVO-540:Turbocharged engine with fuel injection, mounted vertically for use in a helicopter.;HIO-540:Helicopter engine mounted horizontally as in fixed-wing aircraft, normally aspirated with fuel injection; not used in any aircraft. [http://home.comcast.net/~aeroengine/Lycoming2.html Page listing all variants of the Lycoming O-540 series.] Retrieved: 1 September 2008.]

Specifications (IO-540-K1A5)

pistonspecs

ref= [http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/ffae5a2bb5506dcc8625747a00650001/$FILE/1E4.pdf FAA Lycoming IO-540 Series Type Certificate.] Retrieved: 1 September 2008.
type=Six-cylinder air-cooled horizontally opposed engine
bore=5.125 in (130 mm)
stroke=4.375 in (111 mm)
displacement=541.5 in³ (8.87 l)
length=
diameter=
width=
height=
weight=438 lb (199 kg)
valvetrain=Two overhead valves per cylinder
supercharger=
turbocharger=
fuelsystem=Fuel injection
fueltype=100 octane rating gasoline
oilsystem=
coolingsystem=Air-cooled
power=300 hp (223 kW) at 2,700 rpm at sea level
compression=8.7:1
specpower=0.55 hp/in³ (25.14 kW/l)
fuelcon=
specfuelcon=
oilcon=
power/weight=0.68 hp/lb (1.12 kW/kg)
reduction_gear=

References


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