Continental IO-346

Fuel-injected four-cylinder aircraft engine
IO-346
Type Piston aero-engine
National origin United States
Manufacturer Teledyne Continental Motors
First run 1962
Major applications Beechcraft Musketeer
Produced 1965-1969
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.[1]

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.[1][2]

The IO-346 was designed to run on 91-98 avgas. The engine has a dry weight of 269¾ lb or 297 lb 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.[1][2]

Variants

IO-346-A
Base model, certified 27 July 1962[2]
IO-346-B
Identical to IO-346-A except it incorporates provisions for a hydraulic propeller control. Certified 23 June 1964.[2]

Applications

1965 model Beechcraft A23 Musketeer equipped with the IO-346 engine
  • Beechcraft Musketeer[1]
  • Gadfly E.S 102[1]
  • Piel Emeraude[1]
  • Stampe SV-4D[1]

Specifications (IO-346)

Reference: Engines for Homebuilt Aircraft & Ultralights[1]

General characteristics

  • Type: 4-cylinder air-cooled horizontally opposed aircraft piston engine
  • Bore: 5.25 in (133 mm)
  • Stroke: 4.00 in (102 mm)
  • Displacement: 346 in³ (5.68 L)
  • Length: 30 in (762 mm)
  • Width: 33.38 in (848 mm)
  • Height: 22.4 in (569 mm)
  • Dry weight: 297 lb dry, with starter and generator (135 kg)

Components

  • Valvetrain: One intake and one exhaust valve per cylinder
  • Fuel system: CMC fuel injection
  • Fuel type: 91/98 octane avgas
  • Cooling system: Air-cooled

Performance

See also

References

  1. ^ a b c d e f g h Christy, Joe: Engines for Homebuilt Aircraft & Ultralights, pages 63. TAB Books, 1983. ISBN 0-8306-2347-7
  2. ^ a b c d Federal Aviation Administration (November 1973). "TYPE CERTIFICATE DATA SHEET NO. E3CE" (PDF). Archived from the original (PDF) on 2011-06-08. Retrieved 2008-12-14.