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.

BMW IV
Preserved BMW IVa
Type Inline engine
Manufacturer BMW
First run 1919
Developed into BMW V
BMW VI

World record

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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.[1] Diemer stated at the time, "I could have gone much higher, but I didn't have enough oxygen."[citation needed]

Applications

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Specifications

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Data from BMW Type IV description and user manual.[2]

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

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Comparable engines

Related lists

References

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  1. ^ "BMW group". Archived from the original on 28 February 2012. Retrieved 27 July 2013.
  2. ^ bmw-grouparchiv.de Retrieved: 5 December 2016
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