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Rotax 914

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Rotax 914

The Rotax 914 is a turbo-charged, four-stroke, four-cylinder, horizontally opposed aircraft engine with air-cooled cylinders and water-cooled cylinder heads. It is designed and built by the Austrian company BRP-Powertrain, owned by BRP, as part of its Rotax brand.

Contents

The engine commonly powers certified light aircraft, homebuilt aircraft, autogyros and military UAVs such as the MQ-1 Predator.

General characteristics

  • Type: four-cylinder, four-stroke liquid- / air-cooled engine with opposed cylinders
  • Bore: 79.5 mm (3.13 in)
  • Stroke: 61 mm (2.4 in)
  • Displacement: 1,211.2 cc (73.91 cu in)
  • Length: 561 mm (22.1 in)
  • Width: 576 mm (22.7 in)
  • Dry weight: 78 kg (172 lb) with electric starter, carburetors, fuel pump, air filters and oil system

    • Components

  • Valvetrain: OHV, hydraulic lifters, pushrods, rocker arms
  • Fuel system: Dual CD carburetors, mechanical diaphragm pump
  • Fuel type: Unleaded: 91 octane AKI (Canada/USA) / 95 octane RON (European) or higher
  • Oil system: Dry sump with trochoid pump, camshaft driven
  • Cooling system: Liquid-cooled cylinder heads, air-cooled cylinders
  • Reduction gear: Integrated reduction gear 1:2.273; 1:2.43 optional
  • Electronic dual ignition

    • Performance

  • Power output: Maximum 84 kW (115 hp) at 5,800 rpm, with 5 minute time limit; 73 kW (100 hp) continuous

    • References

    Rotax 914 Wikipedia
    (Text) CC BY-SA