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Alfa Romeo 122

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Alfa Romeo 122
Type Piston aircraft engine
Manufacturer Alfa Romeo
First run 1941
Developed from Walter Sagitta

The Alfa Romeo 122 was a 12-cylinder inverted-V aircraft engine produced in 1941 by Alfa Romeo Milano as a licence-built Czechoslovakian Walter Sagitta, featuring a single-speed supercharger. The 122 R.C.38 major production variant had a reduction gearbox, single stage supercharger and rated altitude of 3,800 m (12,500 ft).

Specifications

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General characteristics

  • Type: 60° 12-cylinder inverted V-12 air-cooled engine
  • Bore: 118 mm (4.6 in)
  • Stroke: 140 mm (5.5 in)
  • Displacement: 18.6 L (1,135.04 cu in)
  • Length: 1,790 mm (70.5 in)
  • Width: 725 mm (28.5 in)
  • Height: 781 mm (30.7 in)

Components

  • Supercharger: Centrifugal compressor, diameter 210 mm (8.3 in)
  • Cooling system: Air cooling

Performance

  • Power output: 368 kW (493 hp) at 3,800 m (12,500 ft)

See also

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Related development

Comparable engines

Related lists

Notes

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Bibliography

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  • Archivio Storico Alfa Romeo - Volume II. Torino, novembre 1998.
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