The Klöckner-Humboldt-Deutz DZ 710 was a German

aircraft An aircraft is a vehicle that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines ...

engine manufactured by Motorenfabrik Oberursel A.G. in the early 1940s. It was a 16-cylinder

horizontally-opposed A flat engine is a Internal combustion engine#Reciprocating engines, piston engine where the cylinders are located on either side of a central crankshaft. Flat engines are also known as horizontally opposed engines, however this is distinct fro ...

, two cycle

diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...

. A larger 32-cylinder variant, the Klöckner-Humboldt-Deutz DZ 720 was basically two DZ 710's 'bolted' together to make an

H engine An H engine is a piston engine comprising two separate flat engines (complete with separate crankshafts), most often geared to a common output shaft. The name "H engine" is due to the engine blocks resembling a letter "H" when viewed from the fr ...

configuration. Neither design saw operational use before the end of the war and work on them was halted in late 1945 after the factories were captured by the Allies and turned into makeshift tank repair depots.

Specifications (DZ 710)

References

* http://www.ibiblio.org/pub/academic/history/marshall/military/airforce/engines.txt {{DEFAULTSORT:Klockner-Humboldt-Deutz Dz 710 Aircraft diesel engines 1940s aircraft piston engines