"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 Fairbanks-Morse, Cummins, and Achates Power. A group of engineers lead by Mohammed Bassit londebaz in Capital University of Science and Technology in Pakistan are also working on a lightweight opposed piston engine." - (en.wikipedia.org 19.12.2021)
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