We don't have synonyms for v engine yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are engine, v-engine and w engine.
(n) :
(automotive) An internal combustion engine configuration consisting of two cylinder banks—usually with the same number of cylinders in each bank—connected to a common crankshaft, and arranged at an angle to each other so as to form a V shape when viewed from the front of the engine.
(n) :
(automotive) An internal combustion engine configuration consisting of two cylinder banks—usually with the same number of cylinders in each bank—connected to a common crankshaft, and arranged at an angle to each other so as to form a V shape when viewed from the front of the engine.