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BMW IV

The BMW IV was a six-cylinder, water-cooled inline aircraft engine built in Germany in the 1920s. Power was in the 180 kW (250 hp) range.

World record

On 17 June 1919 Franz Zeno Diemer flew a DFW F37, powered by a BMW IV engine to an unofficial world record height of 9,760 m (32,021 ft) from Oberwiesenfeld, reaching that altitude in 89 minutes. Diemer stated at the time, "I could have gone much higher, but I didn't have enough oxygen."

Applications

  • Arado SC I
  • Albatros L 72
  • Albatros L 74
  • Caspar C 27
  • DFW F37
  • Heinkel HD 22
  • Heinkel HD 24
  • Heinkel HD 39
  • Junkers A 35
  • Junkers F 13
  • LFG V 59
  • LFG V 60
  • Polikarpov R-1 BMW (Soviet unlicensed copy of Airco DH.9A)
  • Rohrbach Ro VII Robbe
  • Rohrbach Ro VIII Roland I
  • Type 91 Heavy Tank
  • Type 95 Heavy Tank

Specifications

Data from BMW Type IV description and user manual.

General characteristics

  • Type: Six-cylinder inline piston engine
  • Bore: 160 mm (6.30 in)
  • Stroke: 190 mm (7.48 in)
  • Displacement: 22.92 L (1,399 cu in)
  • Dry weight: 290 kg (640 lb)

Components

  • Valvetrain: Overhead camshaft, two valves per cylinder
  • Cooling system: Water-cooled

Performance

  • Power output: Nominal 230 PS (227 hp; 169 kW) , maximum continuous 250 PS (247 hp; 184 kW)
  • Compression ratio: 5.5:1

See also

Comparable engines

  • Liberty L-6 (United States)

Related lists

  • List of aircraft engines

References

External links

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