| 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.
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.
The IO-346 was designed to run on 91-98 avgas. The engine has a dry weight of 269.75–297 lb (122–135 kg) 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.
Variants
- IO-346-A
- Base model, certified 27 July 1962
- IO-346-B
- Identical to IO-346-A except it incorporates provisions for a hydraulic propeller control. Certified 23 June 1964.
Applications
Specifications (IO-346)
Reference: Engines for Homebuilt Aircraft & Ultralights
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 cu in (5.7 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
- Power output: 165 hp (123 kW) at 2,700 rpm
- Specific power: 0.47 hp/in³ (21.2 kW/L)
- Compression ratio: 7.5:1
- Power-to-weight ratio: 0.56 hp/lb (0.90 kW/kg)
See also
References
- ^ Christy, Joe: Engines for Homebuilt Aircraft & Ultralights, pages 63. TAB Books, 1983. ISBN 0-8306-2347-7
- ^ 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.