Nicholas August Otto -together with
Eugen Langen- developed and produced the first real combustion engine using both the two stroke and the four stroke principle and gasoline/ petrol as fuel. Both also set up in 1864 the very first engine production plant,
N. A. Otto & Cie. in Köln (Cologne). This company became in 1872 the
Gasmotoren-Fabrik DEUTZ AG, with
Gottlieb Daimler as Director and
Wilhelm Maybach as head of Development.
The term "Ottomotor" was suggested by the "VDI" (Verein Deutscher Ingenieure) in 1936 and appeared for the first time in the German industrial Standard "DIN" in 1940.
From:
https://de.wikipedia.org/wiki/Ottomotor