Research Oil Engine, May 1910, 368 kW
by Hugo Junkers and Wagenseil
The M15 is a further improvement of the Junkers M12 research engine. The M15 was designed for a total of 1000 PS (735kW) and developement work started in 1909. Like the M12 the M15 is a tandem engine with an increased bore of 450mm and a lift of 450mm. A 50% prototype was built at Gebr. Klein in Dahlbruch. A member of the Versuchsanstalt, Obering. Matthew joint the company during the construction work. In May 1910 the engine was completed, however it took until July 1911, when the M15 ran for the first time. The M15 prototype reached 400PS (294kW) and it was a pure research engine on the way to the 1000PS engine. However, a lot of difficulties were observed with the M15 and after initial runs the engine went into intensive modifications until 1912. Following these modifications the M15 reached 500PS.
introduced Jul 2004, transfered Nov 2017
contents last updated 4 Jul 2004