Opposed piston engines

reciprocating internal combustion engine configuration

aircraft engine family by Junkers

opposed-piston engine used in marine, firefighting and BR locomotive applications

Fairbanks, Morse and Company was an American manufacturing company that existed from 1823 until 1958. Founded in 1823 as a manufacturer of weighing scales, it later diversified into pumps, engines, windmills, coffee grinders, radios, farm tractors, feed mills, locomotives, and industrial supplies. It was purchased by the Penn-Texas conglomerate in 1958.

German 24 cylinder diesel engine

motor vehicle engine