Austro-Daimler 6

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.[1]

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.[1]

The single-overhead cam (SOHC) valvetrain of later engines 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. Limited 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.[1]

Data from:[1]

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.[2]

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.II (Oef) (Austro-Daimler 185 hp 6-cyl.)
• Albatros D.III (Oef) (Austro-Daimler 200 hp 6-cyl.)
• Aviatik B.I
• Aviatik B.II
• Aviatik D.I
• Etrich VII[3]
• Hansa-Brandenburg C.I
• Hansa-Brandenburg D.I
• Lohner C.I
• Lohner Type AA (Austro-Daimler 185 hp 6-cyl.)

Comparable engines

• BMW IIIa
• Hiero 6
• Liberty L-6
• Mercedes D.III
• SPA 6A

Related lists

• List of aircraft engines

Wikimedia Commons has media related to Austro-Daimler 6.

• Jane, Fred T., ed. (1969) [1913]. "Aeroplanes & Dirigibles: Austro-Hungarian". Jane's All the World's Aircraft (html). Vol. 1913. New York, NY: Arco Publishing Company Inc. LCCN 69-14964. Retrieved Aug 17, 2018.

• Gunston, Bill (2006). World Encyclopedia of Aero Engines: From the Pioneers to the Present Day (5th ed.). Stroud, UK: Sutton Publishing. p. 18. ISBN 9780750944793. LCCN 2008383222.

• Angelucci, Enzo (1980). The Rand McNally Encyclopedia of Military Aircraft 1914–1980. p. 102.

• Grey, C. G. (1969) [1919]. Jane's All the World's Aircraft 1919. David & Charles Publishing Ltd. pp. 1b–145b. ISBN 0-7153-4647-4.