| Manufacturer | Daimler Motoren Gesellschaft (DMG) |
|---|---|
| First run | 1917 |
The Mercedes D.IVa was a German six-cylinder, water-cooled, inline engine developed in 1917 for use in aircraft and built by Daimler Motoren Gesellschaft (DMG).[1]
Design and development
The D.IVa replaced the failed Mercedes D.IV inline eight-cylinder engine. The D.IVa was primarily used to power bombers and large reconnaissance aircraft. Unlike most German designs, the D.IVa was relatively advanced, including four valves per cylinder actuated by a SOHC valvetrain, the same "single-camshaft" arrangement that had also been used on the earlier two-valve per cylinder D.I through D.IIIa powerplants.
Designed specifically to be installed in the fuselage, the engine featured a number of design elements intended to reduce its width. For instance, the carburetor was placed behind the engine, feeding fuel to the cylinders via a long tubular intake manifold. This had the disadvantage of poor fuel distribution. Two versions of the engine were produced in mirror copies, running in opposite directions.
Applications
- AEG G.IV
- AEG G.V
- AEG R.I
- AGO C.VIII
- Albatros C.X
- Albatros C.XII
- Albatros C.XV
- Friedrichshafen G.III
- Friedrichshafen G.IV
- Friedrichshafen N.I
- Gotha G.III
- Gotha G.IV
- Gotha G.V
- Gotha G.VI
- Gotha G.VII
- Linke-Hofmann R.I
- Linke-Hofmann R.II
- Rumpler C.IV
- Zeppelin Staaken R.VI
Engines on display
- A Mercedes D.IVa recently restored by the Museum's Friends ASSN. is on public display at the Museo Nacional de Aeronautica (MORON-Argentina).
References
Notes
- ^ Gunston 1989, p.101.
Bibliography
- Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
- Jane's Fighting Aircraft of World War I. London. Studio Editions Ltd, 1993. ISBN 1-85170-347-0
Further reading
- Düsing, Michael (2022). German & Austro-Hungarian Aero Engines of WWI. Vol. 2. n. p.: Aeronaught Books. ISBN 978-1-953201-52-2.