The L9204 FMV engine developed by Maschinenfabrik Augsburg-Nürnberg AG (M.A.N.) is an air-cooled, 4-cyl, in-line unit with remarkable multifuel capabilities. With a displacement of 162 in3, it is rated to produce 70 hp at 3800 rpm. The use of the FM combustion system, in addition to conferring multifuel ability, has made it possible also to achieve a high power/weight ratio.
This paper presents details of the engine design and operating data, and results of endurance testing are given.