Lycoming O-540

Lycoming O -540 is the name of an engine, which comes from a piston engine family of the U.S. manufacturer Lycoming. The engine was first introduced in 1957 and is still in production today.

Technical Features

All engines in this series are air-cooled petrol four-stroke horizontally opposed engines (O for opposite, opposite ), have six cylinders with a bore of 130.2 mm and a stroke of 111.1 mm. The displacement is how the type designation 540 says, 540 cubic inch, 8873 cm ³ accordingly. The engine has a camshaft having a central bumper actuation of the valves. The cylinder liners are the single - cylinder heads made ​​of nitrided steel of a light metal alloy. Other engines of the manufacturer from the same family, ie with the same bore and the same stroke, the four-cylinder Lycoming O- 360 and the eight-cylinder Lycoming O- 720th A variant of the IO -540 is the first aviation engine, which has been approved for use with ethanol and the Embraer EMB 202A is used.

Designation system

Various versions have additional features that may be identified by the designation prefix letters, such as I ( injection) for fuel injection, AE ( Aerobatic ) for aerobatic use, G ( geared ) for reduction gear, H ( Helicopter Horizontal ) for the helicopter installation in a horizontal position, L ( left Hand rotation Crankshaft ) for a left -running engine (default is clockwise viewed in flight direction ), S ( supercharger ) for an engine-driven supercharger ( compressor ), T ( turbo supercharger ) for turbocharging and V for the possibility the installation of vertical crankshaft position in helicopters.

Variants

  • O -540: Source engine, which was approved on 31 October 1957. It is still in production and guaranteed depending on the model 235 hp at 2575 min -1 and 270 hp at 2700 min -1. It is used in a number of known aircraft such as the Cessna 182 or Piper PA -23 Apache. In Germany had the Dornier Do 28 A two engines of this design. In helicopter Robinson R44 it is used.
  • VO- 540 variant designed for vertical installation with fan for use in helicopters Bell 47 and Hiller 12 The engine produces 305-315 hp at 3200 min -1. It was produced between 1958-1982.
  • IO -540: The first version of the engine with fuel injection. The power is between 230 hp at 2400 min -1 and 300 hp at 2700 min -1. It depends, among other things in the Embraer EMB 201, the Pilatus PC-8, the Cessna 182S and the Piper PA -31 and in Germany in the Dornier Do 28 B are used.
  • IGSO 540: version with compressor and a power 380 hp at 3200 min -1, which was produced 1960-1978. She had a reduction gear with a ratio i = 0.642. It was incorporated, inter alia, in the Aero Commander 680F and in Germany in the Skyservant.
  • IGO- 540: version with 325 hp at 3000 min -1 for the Pilatus PC -6 and Aero Commander 560F. The engine was built in 1960-1977. It was also stocky with i = 0.642.
  • TVO - 540: turbocharged version with 305 hp at 3200 min -1 for the Hiller 12 The engine was only made ​​1961-1965.
  • TIVO - 540: turbo version with injection for Hiller SL3 and SL4 Hiller. The engine made ​​315 hp at 3200 min -1. It was manufactured from 1963 until 1977.
  • IVO -540 variant with 305 hp at 3200 mi -1 which was made ​​1965-1977 for the Brantly 305.
  • TIO or LTIO -540 are variants with an output between 250 hp at 2575 min-1 and 350 hp at 2600 rpm -1. They were made from 1965 onwards and are still in production. They are used for example in the Cessna Turbo Skylane 182T T, the Mooney M20M Bravo or the Piper PA- 23 Turbo Aztec.
  • HIO - 540: version with 290 hp was, however, not used in 2575 min-1, which was offered between 1974 and 1977 in a series.
  • AEIO - 540: From 1974 until today variant made ​​for aerobatics with 260-300 hp at 2700 min -1. It comes in the Pitts S- 2B Pitts S- 2S, the Utva Lasta and the Mooney M20T used.
  • TIO 540NXT: Specially tuned version for the Nemesis NXT to participate in the Reno Air Race with 350 hp.
  • O -540 - L3C5D: Source engine supplemented by an unregulated exhaust gas turbocharger for use in the Cessna 182 RG Turbo from 1978 ( TR182 ). The engine develops 235 hp at 2575 min-1 and 31 in / HG boost pressure ( inches of mercury). The consumption amounts to 125 l AVGAS per hour.
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