The Austro-Daimler 6 was a series of
Austria
Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...
n six-cylinder
water-cooled
Cooling tower and water discharge of a nuclear power plant
Water cooling is a method of heat removal from components and industrial equipment. Evaporative cooling using water is often more efficient than air cooling. Water is inexpensive and no ...
inline
SOHC aero engines first produced in 1910 by the
Austro-Daimler
Austro-Daimler was an Austro-Hungarian automaker company, from 1899 until 1934. It was a subsidiary of the German ''Daimler-Motoren-Gesellschaft'' (DMG) until 1909.
Early history
In 1890, Eduard Bierenz was appointed as Austrian retailer. The ...
company.
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
The Mercedes D.II was a six-cylinder, SOHC valvetrain liquid-cooled inline aircraft engine built by Daimler during the early stages of World War I. Producing about 110 to 120 hp, it was at the low-end of the power range of contemporary eng ...
,
Benz Bz.IV,
Beardmore, and
Hiero 6
In 1914 Otto Hieronimus manufactured the six-cylinder Hiero E, also known as the Hiero 6 engine which was derived from earlier 4-cylinder engines. The Hiero engine like the Austro-Daimler powered many of Austria's World War I aircraft. Hiero air ...
. 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.
Variants
''Data from:
;Austro-Daimler 90 hp 6-cyl.
:The original low capacity version developing , introduced in 1910.
;Austro-Daimler 120 hp 6-cyl.
: Up-rated with a capacity of , from bore and stroke, developing at 1,200 rpm, introduced in 1911.
;Austro-Daimler 160 hp 6-cyl.
:developing , introduced in 1913.
;Austro-Daimler 185 hp 6-cyl.
:developing , introduced in 1916.
;Austro-Daimler 200 hp 6-cyl.
: Up-rated with a capacity of , from bore and , developing at 1,350 rpm, introduced in December 1916.
;Austro-Daimler 210 hp 6-cyl.
:, introduced in late 1917.
;Austro-Daimler 225 hp 6-cyl.
:developing , introduced in 1918.
Applications
*
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 ''Note:'' Not to be confused with the Austro-Hungarian Aviatik B.II series 32, 32.7 and 34 which were different aircraft.
The Aviatik B.II was a reconnaissance aircraft built in Germany during World War I.
Design and development
The (German) Av ...
*
Aviatik D.I
The Halberstadt D.II was a biplane fighter aircraft developed and manufactured by German aircraft company Halberstädter Flugzeugwerke.
It was adopted by the ''Luftstreitkräfte'' (Imperial German Army Air Service) and served through the period ...
*
Etrich VII
*
Hansa-Brandenburg C.I
*
Hansa-Brandenburg D.I
The Hansa-Brandenburg D.I, also known as the KD (''Kampf Doppeldecker'') was a German fighter aircraft of World War I. Despite poor handling characteristics it was put into service by Austria-Hungary, where some aircraft served until the end of ...
*
Lohner C.I
*
Lohner Type AA (Austro-Daimler 185 hp 6-cyl.)
Specifications (Austro-Daimler 120 hp)
See also
Footnotes
References
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{{Austro-Daimler
1910s aircraft piston engines
Austro-Daimler
Straight-six engines