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Gnome Rhône 18L

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Gnome-Rhône 18L

The Gnome et Rhône 18L was a French-designed twin-row 18-cylinder air-cooled radial engine. The 18L was a large step up in terms of displacement, power and number of cylinders. The majority of Gnome-Rhone engines were either 7, 9 or 14 cylinders. The engine proved not to be a success, and it was dropped in 1939 due to a poor power-to-weight ratio.

Contents

Specifications (Gnome Rhone 18L)

Data from

General characteristics

  • Type: 18-cylinder twin-row air-cooled radial engine
  • Bore: 146 mm (5.75 in)
  • Stroke: 180 mm (7.09 in)
  • Displacement: 54.2 L (3,308 cu in)
  • Height: 1,400 mm (55.12 in)
  • Dry weight: 736 kg (1,622 lbs)

    • Components

  • Valvetrain: 1 inlet and 1 exhaust valve per cylinder
  • Supercharger: Yes
  • Fuel system: 1 Bronzania Carburetor
  • Fuel type: 87 octane
  • Cooling system: air

    • Performance

  • Power output: 1,300 hp at 2,150 rpm
  • Compression ratio: 6.1:1
  • Power-to-weight ratio: 0.8 hp/lb at cruise speed

    • References

    Gnome-Rhône 18L Wikipedia
    (Text) CC BY-SA