Junkers L 2

The Junkers L 2 was a liquid-cooled six-cylinder - aircraft engine of the Junkers engine GmbH in Dessau .

development

Hugo Junkers used for his 1919-built airliner F 13 as driving a BMW IIIa -Motor, in 1917 even during the First World War was created and its production at the instigation of the end of the war victors are set had, but still existed remnants of that. When these began to run out in 1922, since BMW was not interested in resuming production , he decided to rebuild the engine, especially since its workshops had already produced spare parts for BMW engines during the war. BMW raised no objections and so in 1923 Junkers reopened its Magdeburg engine factory, which was closed in 1915, this time in Dessau, and began designing and manufacturing aircraft engines.

Junkers designer Otto Mader was responsible for the development of the L 2 and, due to the restrictions of the Versailles Treaty , which initially only allowed aircraft engines up to a maximum of 200 hp (147 kW) in Germany, it initially had an output of 195 hp (143 kW) with a displacement of 19 l. The type received its type approval in 1924 and then went into series production, whereby the performance could gradually be increased due to the increasingly relaxed regulations and the output in the end was up to 60 pieces per month. The last version of the L 2 had a take-off power of 265 hp (195 kW) and the L 2a, which was also built in series, appeared in 1925 as a further increased version with increased engine speed and a take-off power of 280 hp (206 kW).

commitment

The L 2 was mainly installed in different versions of the F 13. It was also used as the middle drive for the three-engine G 23 . Another Junkers type, where it was used, was also three-engined and AB Flygindustri in Limhamn in Malmö prepared G 24 . There it served either as the main drive or, in addition to a centrally positioned L-5 engine, as an external motor on both sides.

Technical specifications

Parameter	Data (L 2)	Data (L 2a)
Manufacturer	Junkers Motorenbau GmbH
Developing country	German Empire German Empire
Year of development	1924	1925
Design	water-cooled six - cylinder four-stroke in - line engine
drilling	150 mm
Hub	180 mm
Displacement	19.05 l
Compression ratio	6: 1
length	1540 mm
width	555 mm
height	1050 mm
Dimensions	290 kg	295 kg
Starting power	265 hp (195 kW) at 1650 rpm	280 hp (206 kW) at 1700 rpm
Combat and climb performance on the ground	265 hp (195 kW) at 1650 rpm	280 hp (206 kW) at 1700 rpm
Nominal power on the ground	230 PS (169 kW) at 1550 rpm	265 hp (195 kW) at 1650 rpm
Max. Continuous power close to the ground	195 hp (143 kW) at 1380 rpm	230 hp (169 kW) at 1420 rpm
Fuel consumption	230 g / PSh
Lubricant consumption	10 g / PSh

literature

Kyrill von Gersdorff, Kurt Grasmann: aircraft engines and jet engines . In: German aviation . Bernard & Graefe, Munich 1981, ISBN 3-7637-5272-2 .
Günter Schmitt: Junkers and his planes . Transpress, Berlin 1986, ISBN 3-344-00192-2 .

Web links

Commons : Junkers L2 - collection of pictures, videos and audio files

Individual evidence

^ ^A ^b Helmut Stützer: The German military aircraft 1919–1934 . E. S. Mittler & Sohn, Herford 1984, ISBN 3-8132-0184-8 , p. 231 .

[Stützer,_Militärflugzeuge-1] A ^b Helmut Stützer: The German military aircraft 1919–1934 . E. S. Mittler & Sohn, Herford 1984, ISBN 3-8132-0184-8 , p. 231 .