Daimler-Benz DB 601
| DB 601 | |
|---|---|
    | |
| Preserved Daimler-Benz DB 601. | |
| Type | Piston V12 aircraft engine | 
| National origin | Germany | 
| Manufacturer | Daimler-Benz | 
| First run | 1935 | 
| Major applications | Messerschmitt Bf 109 | 
| Developed from | Daimler-Benz DB 600 | 
| Variants |  Aichi Atsuta  Kawasaki Ha-40  | 
| Developed into |  Daimler-Benz DB 603  Daimler-Benz DB 605  | 



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, by Kawasaki as the Ha-40, and in Italy by Alfa Romeo as the R.A.1000 R.C.41-I Monsone.
Development
Based on the guidelines laid down by the German "Reichverkehrsministerium" (Ministry of Transport),[1] in 1930 Daimler-Benz began development of a new aero engine of the 30 l (1,800 cu in) displacement class: a liquid-cooled inverted-Vee 12-cylinder piston engine.[2] This was designated F4, and by 1931 two prototypes were running on the test bench.[2] These were followed by the improved F4B, which became the prototype for the DB 600.[2]
In 1933, Daimler-Benz finally received a contract to develop its new engine and to build six examples of the DB 600.[2] For the year after, the DB 600 was the only German aero engine in the 30-litre class.[2] In total, 2281 DB 600s were built.[2]
The DB 601A-1 was a development of the DB 600 with mechanical direct fuel injection. Like all DB 601s, it had a 33.9 litre displacement.[2] The first DB 601A-1 prototype, designated as F4E, was test run in 1935, and an order for 150 engines was placed in February 1937.[2]
Serial production began in November 1937, and ended in 1943, after 19,000 examples of all types were produced.[2]
Variants
- DB 601 A-1
 - Up to 1,100 PS (809.0 kW; 1,085.0 hp) at sea-level with 2,400 rpm, up to 1,020 PS (750.2 kW; 1,006.0 hp) at 2,400 rpm and 4,500 m (14,800 ft) altitude, B4 fuel
 - DB 601 Aa
 - Up to 1,175 PS (864.2 kW; 1,158.9 hp) at sea-level with 2,500 rpm, up to 1,100 PS (809.0 kW; 1,085.0 hp) at 2,400 rpm and 3,700 m (12,100 ft) altitude, B4 fuel
 - DB 601 B-1
 - Same as DB601 A-1 for use in Messerschmitt Bf 110 and/or bomber aircraft (different prop/engine ratio, 1:1.88 instead of 1:1.55)
 - DB 601 Ba
 - Similar to Aa for use in Messerschmitt Bf 110 and/or bomber aircraft (different prop/engine ratio, 1:1.88 instead of 1:1.55)
 - DB 601 M
 - For use in the Heinkel He 100D 1,175 PS (864.2 kW; 1,158.9 hp)
 - DB 601 N
 - Up to 1,175 PS (864.2 kW; 1,158.9 hp) at sea-level and at 4,900 m (16,100 ft) altitude with 2,600 rpm, C3 fuel
 - Up to 1,270 PS (934.1 kW; 1,252.6 hp) at 2,100 m (6,900 ft) altitude with 2,600 rpm
 - DB 601 P
 - Same as DB 601 N for use in Messerschmitt Bf 110 and/or bomber aircraft (different prop/engine ratio, 1:1.88 instead of 1:1.55)
 - DB 601 E
 - Up to 1,350 PS (992.9 kW; 1,331.5 hp) at sea-level with 2,700 rpm, up to 1,320 PS (970.9 kW; 1,301.9 hp) with 2.700 rpm at 4,800 m (15,700 ft) altitude, B4 fuel
 - Up to 1,450 PS (1,066.5 kW; 1,430.2 hp) at 2,100 m (6,900 ft) altitude with 2,700 rpm
 - DB 601 F/G
 - Same as DB 601 E 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)
 - DB 606 A/B
 - Two DB 601 F or G coupled to work on a single propeller shaft for use in early Heinkel He 177As - 2,700 PS (1,986 kW) at sea level with a mirror-imaged starboard component engine supercharger, and derided as "welded-together engines" by Reichsmarschall Hermann Göring in August 1942, from the problems they caused with engine fires in the He 177A during service from their inadequate installation design; such problems were not present in either the Heinkel He 119 and Messerschmitt Me 261 which also used them.
 - Alfa-Romeo R.A.1000 R.C.41-I Monsone
 - Licence built by Alfa Romeo in Italy
 
Applications
- DB 601
 
- CANSA FC.20
 - Dornier Do 215
 - Heinkel He 100
 - Henschel Hs 130A-0
 - Kawasaki Ki-60
 - Messerschmitt Bf 109
 - Messerschmitt Bf 110
 - Messerschmitt Me 210
 - Savoia-Marchetti SM.88
 
- DB 606
 
Licensees
- Alfa Romeo RA 1000 RC 41
 
Specifications (DB 601 Aa)
Data from [3]
General characteristics
- Type: Twelve-cylinder liquid-cooled supercharged 60° inverted Vee aircraft piston engine
 - Bore: 150 mm (5.91 in)
 - Stroke: 160 mm (6.30 in)
 - Displacement: 33.93 l (2,070.54 cu in)
 - Length: 1,722 mm (67.80 in)
 - Dry weight: 590 kg (1,300 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-speed centrifugal type supercharger (later, hydraulic-driven[4])
 - Fuel system: Direct fuel injection
 - Oil system: Dry sump with one pressure and two scavenge pumps
 - Cooling system: Liquid-cooled
 
Performance
- Power output: 
 - 1,175 PS (864.2 kW; 1,158.9 hp) at 2,500 rpm for takeoff
 - 1,070 PS (787.0 kW; 1,055.4 hp) at 2,400 rpm at 3,700 m (12,100 ft)
 - Specific power: 25.52 kW/l (0.56 hp/in³)
 - Compression ratio: 6.9:1
 - Specific fuel consumption: 270 g/(kW·h) (0.44 lb/(hp·h))
 - Power-to-weight ratio: 1.47 kW/kg (0.89 hp/lb)
 
See also
- Related development
 
- Comparable engines
 
- Allison V-1710
 - Continental I-1430
 - Hispano-Suiza 12Y
 - Isotta-Fraschini Asso XI
 - Junkers Jumo 211
 - Klimov M-103
 - Klimov M-105
 - Mikulin AM-35
 - Rolls-Royce Merlin
 
- Related lists
 
References
Notes
- ↑ MTU-Museum Triebwerksgeschichte – gestern, heute und morgen, on www.mtu.de (German, PDF, 4,4 MB)
 - 1 2 3 4 5 6 7 8 9 Mankau&Petrick, 2001. pp. 347-355
 - ↑ Tsygulev (1939). Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Авиационные моторы военных воздушных сил иностранных государств) (in Russian). Moscow: Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR.
 - ↑ Wilkinson, Stephan (Jan 2003). "With the Noise of a Stone Crusher". Popular Science.
 
Bibliography
- Mankau, Heinz and Peter Petrick. Messerschmitt Bf 110, Me 210, Me 410. Raumfahrt, Germany: Aviatic Verlag, 2001. ISBN 3-925505-62-8.
 - Neil Gregor Daimler-Benz in the Third Reich. Yale University Press, 1998
 
External links
| Wikimedia Commons has media related to Daimler-Benz DB 601. | 
- Daimler-Benz Aircraft Engines
 - Aviation History.com, DB 600 series page
 - Kurfürst - Resource on Messerschmitt Bf 109 performance.
 - (1940) Betriebs und Wartungsvorschrift zum Mercedes-Benz Flugmotor DB 601 A u. B - 1940 dated operation and maintenance manual for the Daimler-Benz DB 601A and DB 601B aircraft engines
 
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