Daimler-Benz DB 601

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The Daimler-Benz DB 601 was a German aircraft engine built during World War II. It was a liquid-cooled inverted V12, and powered the Messerschmitt Bf 109, among others. The DB 601 was basically an improved DB 600 with direct fuel injection.

The DB 601Aa was licence-built in Japan by Aichi as the Atsuta and Kawasaki as Ha-60 to be used in the Ki-61 Hien and in Italy by Alfa-Romeo as R.A.1000 R.C.41-I Monsone for use in the C.202 Folgore.

[edit] Variants

• DB601A-1

Up to 1,100 PS (809 kW) at sea-level at 2,400 rpm, up to 1,020 PS (750 kW) at 2,400 rpm and 4.5 km altitude, B4 fuel

• DB601Aa

Up to 1,175 PS (865 kW) at sea-level at 2,500 rpm, up to 1,100 PS (809 kW) at 2,400 rpm and 3.7 km altitude, B4 fuel

• • DB601B-1/Ba

Same as DB601A-1/Aa for use in Messerschmitt Bf 110 and/or bomber aircraft (different prop/engine ratio, 1:1.88 instead of 1:1.55)

• DB601N

Up to 1,175 PS (864 kW) at sea-level and at 4.9 km altitude with 2,600 rpm, C3 fuel

Up to 1,270 PS (934 kW) at 2.1 km altitude with 2,600 rpm

• • DB601P

Same as DB601N for use in Messerschmitt Bf 110 and/or bomber aircraft (different prop/engine ratio, 1:1.88 instead of 1:1.55)

• DB601E

Up to 1,350 PS (993 kW) at sea-level with 2,700 rpm, up to 1,320 PS (970 kW) with 2.700 rpm at 4.8 km altitude, B4 fuel

Up to 1,450 PS (1066 kW) at 2.1 km altitude with 2,700 rpm

• • DB601F/G

Same as DB601E for use in Messerschmitt Bf 110, Messerschmitt Me 210 and/or bomber aircraft (different prop/engine ratio,1:1.875 (601F), 1:2.06 (601G) instead of 1:1.685)

• DB606

Two DB601F or G coupled to work on a single propeller shaft for use in early Heinkel He 177 - 2,700 PS (1,985 kW) at sea level

[edit] Specifications (DB 601Aa)

General characteristics

• Type: 12-cylinder liquid-cooled supercharged 60° inverted Vee aircraft piston engine
• Bore: 150 mm (5.91 in)
• Stroke: 160 mm (6.30 in)
• Displacement: 33.9 L (2,070 in³)
• Length: 1,722 mm (68 in)
• Dry weight: 590 kg (1,320 lb)

Components

• Valvetrain: Two intake and two sodium-cooled exhaust valves per cylinder actuated via a single overhead camshaft per cylinder block.
• Supercharger: Gear-driven single-stage single-speed centrifugal type supercharger
• Fuel system: Fuel injection
• Oil system: Dry sump with one pressure and two scavenge pumps
• Cooling system: Liquid-cooled

Performance

• Power output:
  
  • 865 kW (1,175 PS - 1,160 hp) at 2,500 rpm for takeoff
  • 735 kW (1,000 PS - 985 hp) at 2,400 rpm for max continuous
• Specific power: 25.5 kW/L (0.56 hp/in³)
• Compression ratio: 6.9:1
• Specific fuel consumption: 0.27 kg/(kW·h) (0.45 lb/(hp·h))
• Power-to-weight ratio: 1.44 kW/kg (0.88 hp/lb)