U engine
noun1
A piston engine made up of two separate straight engines (complete with separate crankshafts) placed side by side and coupled to a shared output shaft.
noun
A piston engine made up of two separate straight engines (complete with separate crankshafts) placed side by side and coupled to a shared output shaft.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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