|A 147 kW (197 hp) Austro-Daimler fitted to an Aviatik D.I, on display at the Vienna Technical Museum|
|Type||6-cyl. water-cooled in-line piston engine|
Design and development
The first Austro-Daimler six-cylinder engine was designed by Dr-Ing Ferdinand Porsche to be an aircraft engine from the outset. Of high quality manufacture, the Austro-Daimler was modestly rated at relatively low rpm, which gave the engine family a reputation for robustness and reliability.
Features of the Austro-Daimler included welded steel water jackets (originally copper), seven main bearings and large diameter inclined inlet and exhaust valves opened by dual action push-pull rods and closed by spring pressure. The single-overhead cam valvetrain was driven from the crankshaft through the usual vertically-oriented shaft as the contemporary Mercedes D.III was, but the Austro-Daimler had its vertical camshaft drive system mounted at the front of the engine instead, and not the usual aft-end placement of other Central Powers straight-six "SOHC" liquid-cooled aircraft powerplants, like the Mercedes and BMW designs.
The Austro-Daimler inspired many imitators such as the Mercedes D.II, Benz Bz.IV, Beardmore, and Hiero 6. Modest availability of the Austro-Daimler engines forced some aircraft manufacturers to substitute Mercedes (the German Daimler company) engines in their aircraft, due to greater availability.
- Austro-Daimler 90 hp 6-cyl.
- The original low capacity version developing 90 hp (67.11 kW), introduced in 1910.
- Austro-Daimler 120 hp 6-cyl.
- Up-rated with a capacity of 13.9 l (848.23 cu in), from 130 mm (5.12 in) bore and 175 mm (6.89 in) stroke, developing 120 hp (89.48 kW) at 1,200 rpm, introduced in 1911.
- Austro-Daimler 160 hp 6-cyl.
- developing 160 hp (119.31 kW), introduced in 1913.
- Austro-Daimler 185 hp 6-cyl.
- developing 185 hp (137.95 kW), introduced in 1916.
- Austro-Daimler 200 hp 6-cyl.
- Up-rated with a capacity of 15.03 l (917.19 cu in), from 135 mm (5.31 in) bore and 175 mm (6.89 in), developing 200 hp (149.14 kW) at 1,350 rpm, introduced in December 1916.
- Austro-Daimler 210 hp 6-cyl.
- 210 hp (156.60 kW), introduced in late 1917.
- Austro-Daimler 225 hp 6-cyl.
- developing 225 hp (167.78 kW), introduced in 1918.
- Albatros D.III (Austro-Hungarian version license built by O.E.F. A.G.)
- Aviatik B.I
- Aviatik B.II
- Aviatik D.I
- Hansa-Brandenburg C.I
- Hansa-Brandenburg D.I
- Lohner C.I
- Lohner Type AA
Specifications (Austro-Daimler 120 hp)
- Type: 6-cylinder liquid-cooled inline engine
- Bore: 130 mm (5.12 in)
- Stroke: 175 mm (6.89 in)
- Displacement: 13.9 L (850.5 cu in)
- Length: 1,690 mm (66.5 in)
- Width: 520 mm (20.47 in)
- Height: 1,040 mm (41 in)
- Dry weight: 320 kg (705 lb)
- Fuel system: Carburetor
- Power output: 120 hp at 1,200 RPM
|Wikimedia Commons has media related to Austro-Daimler 6.|
- Gunston, Bill. (1986). World Encyclopaedia of Aero Engines. Patrick Stephens: Wellingborough. p. 18
- Angelucci, Enzo. (1980). "The Rand McNally Encyclopedia of Military Aircraft 1914–1980". p. 102
- Grey, C.G. (1969). Jane's All the World's Aircraft 1919 (Facsimile ed.). David & Charles (Publishing) Limited. pp. 1b to 145b. ISBN 0-7153-4647-4.