Daimler-Benz DB 604: Difference between revisions
Buster40004 (talk | contribs) →Design and development: changed cylinder arrangement to six inline rows of four cylinders to match the "X" configuration |
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==Design and development== |
==Design and development== |
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The DB 604 was unique among the DB aircraft engines by having its 24 cylinders being arranged in an [[X engine|X]], i.e. |
The DB 604 was unique among the DB aircraft engines by having its 24 cylinders being arranged in an [[X engine|X]], i.e. six inline rows of four [[Cylinder (engine)|cylinder]]s. The DB 604 was also unique amongst the [[X24 engine|X-24]] engines, in that it was not conceived as a further development of existing Daimler-Benz aircraft engines such as the [[Daimler-Benz DB 601|DB 601]], [[Daimler-Benz DB 603|DB 603]] or [[Daimler-Benz DB 605|DB 605]]. For example the [[Rolls-Royce Vulture]] was basically two [[Rolls-Royce Peregrine]] engines joined at the crankcase, thus producing the X-configuration of the cylinders. |
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The DB 604 was a completely new Daimler-Benz engine design featuring a perfectly square [[stroke ratio]] of 135 mm x 135 mm. The [[Square (geometry)|square]] [[Stroke (engine)|stroke]] [[ratio]] enabled the relatively high engine speed of 3,200 [[Revolutions per minute|rpm]]. The first engine tested in 1939 on the [[engine test stand]] achieved a power output of 1,725 [[Watt#Kilowatt|kW]] (2,350 [[Horsepower|hp]]).<ref>von Gersdorff, K., et al. p. 120</ref> |
The DB 604 was a completely new Daimler-Benz engine design featuring a perfectly square [[stroke ratio]] of 135 mm x 135 mm. The [[Square (geometry)|square]] [[Stroke (engine)|stroke]] [[ratio]] enabled the relatively high engine speed of 3,200 [[Revolutions per minute|rpm]]. The first engine tested in 1939 on the [[engine test stand]] achieved a power output of 1,725 [[Watt#Kilowatt|kW]] (2,350 [[Horsepower|hp]]).<ref>von Gersdorff, K., et al. p. 120</ref> |
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Revision as of 19:06, 12 July 2011
| DB 604 | |
|---|---|
| Type | Piston aircraft engine |
| National origin | Germany |
| Manufacturer | Daimler-Benz |
| First run | Template:Avyear |
The Daimler-Benz DB 604 was an experimental German 24-cylinder aircraft engine, which did not progress beyond the initial engine testing phase and was ultimately abandoned in September 1942.
Design and development
The DB 604 was unique among the DB aircraft engines by having its 24 cylinders being arranged in an X, i.e. six inline rows of four cylinders. The DB 604 was also unique amongst the X-24 engines, in that it was not conceived as a further development of existing Daimler-Benz aircraft engines such as the DB 601, DB 603 or DB 605. For example the Rolls-Royce Vulture was basically two Rolls-Royce Peregrine engines joined at the crankcase, thus producing the X-configuration of the cylinders.
The DB 604 was a completely new Daimler-Benz engine design featuring a perfectly square stroke ratio of 135 mm x 135 mm. The square stroke ratio enabled the relatively high engine speed of 3,200 rpm. The first engine tested in 1939 on the engine test stand achieved a power output of 1,725 kW (2,350 hp).[1]
Further development of the first test engines led to the DB 604A/B. The only difference between the DB 604A and the DB 604B was the direction in which the crankshaft turned. The DB 604A/B was equipped with a two-speed supercharger, achieving 1,835 kW (2,500 hp) whilst testing.
Development of this promising engine was canceled by the Reich Air Ministry (RLM - Template:Lang-de) in September 1942.[2]
Engines on display
A preserved Daimler-Benz DB 604 is on public display at the Flugausstellung L.+ P. Junior museum, Hermeskeil, Germany.
Specifications (DB 604A/B)
General characteristics
- Type: Water-cooled 24-cylinder X (4 rows of 6-cylinders) piston engine
- Bore: 135 mm
- Stroke: 135 mm
- Displacement: 46.38 L (2,830 cu in)
- Dry weight: 1,080 kg (2,379 lb)
Performance
- Power output: 1,835 kW (2,500 hp) at 3,200 rpm at 5,100 m (16,732 ft)
- Specific power: 25.3 kW/L (0.9 hp/cu in)
- Compression ratio: 7.0:1
- Power-to-weight ratio: 0.59 kW/kg (0.95 hp/lb)
See also
Comparable engines
- Allison V-3420
- Rolls-Royce Vulture
- Rolls-Royce Eagle (1944)
- Jumo 222
- Wright R-2160 Tornado
- Dobrynin VD-4
Related lists
References
Notes
Bibliography
- Gunston, Bill. World Encyclopaedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
- von Gersdorff, Kyrill; Schubert, Helmet et al. Die deutsche Luftfahrt: Flugmotoren und Strahltriebwerke. Bernard & Graefe Verlag, Bonn, 2007. ISBN 10 3-7637-6128-4
- Neil Gregor Daimler-Benz in the Third Reich. Yale University Press, 1998
