Back Qarşı porşenli mühərrik Azerbaijani Motor s protiběžnými písty Czech Gegenkolbenmotor German Motor de pistones opuestos Spanish Moteur à pistons opposés French Ellendugattyús motor Hungarian Motore a pistoni opposti Italian 対向ピストン機関 Japanese 대향 피스톤 기관 Korean Dobbeltstempelmotor NB
An opposed-piston engine is a piston engine in which each cylinder has a piston at both ends, and no cylinder head. Petrol and diesel opposed-piston engines have been used mostly in large-scale applications such as ships, military tanks, and factories. Current manufacturers of opposed-piston engines include Cummins, Achates Power and Fairbanks-Morse Defense (FMDefense).