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BMW 801
The BMW 801 was a powerful German air-cooled 14-cylinder-radial aircraft engine built by BMW and used in a number of German Luftwaffe aircraft of World War II. Production versions of the twin-row engine generated between 1,560 and 2,000 PS (1,540-1,970 hp, or 1,150-1,470 kW). It was the most produced radial engine of Germany in World War II with more than 28,000 built.

The 801 was originally intended to replace existing radial types in German transport and utility aircraft. At the time, it was widely agreed among European designers that an inline engine was a requirement for high performance designs due to its smaller frontal area and resulting lower drag. Kurt Tank successfully fitted a BMW 801 to a new fighter design he was working on, and as a result the 801 became best known as the power plant for the famous Focke-Wulf Fw 190.

Manufacturer: Bayerische Motoren Werke AG
Developed: 1939
Type: radial aircraft engine
Number Built: 28,000+
General characteristics
  Type: 14-cylinder supercharged two-row air-cooled radial engine
  Bore: 156 mm (6.15 in)
  Stroke: 156 mm (6.15 in)
  Displacement: 41.8 litres (2,560 in³)
  Length: 2,006 mm (79 in)
  Diameter: 1,290 mm (51 in)
  Dry weight: 1,012 kg (2,226 lb)

Components
  Valvetrain: One intake and one sodium-cooled exhaust valve per cylinder
  Supercharger: Gear-driven single-stage two-speed
  Fuel system: Direct fuel injection
  Cooling system: Air-cooled, with oil cooler integrated into forward cowl

Performance
  Power output:
    1,560 PS (1,539 hp, 1,147 kW) at 2,700 rpm for takeoff at sea level
  Specific power: 27.44 kW/L (0.60 hp/in³)
  Compression ratio: 6.5:1
  Specific fuel consumption: 0.308 kg/(kW·h) (0.506 lb/(hp·h))
  Power-to-weight ratio: 1.13 kW/kg (0.69 hp/lb)

Applications:
– Blohm & Voss BV 141
– Blohm & Voss BV 144
– Dornier Do 217
– Focke-Wulf Fw 190
– Focke-Wulf Fw 191
– Heinkel He 277
– Junkers Ju 88
   – Junkers Ju 188
– Junkers Ju 288
– Junkers Ju 290
– Junkers Ju 388
– Junkers Ju 390
– Messerschmitt Me 264
Sources:
Wikipedia
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