Intake and exhaust passages in cylinder heads of an opposed-cylinder engine

摘要

Intake and exhaust passages in cylinder heads of an opposed six-cylinder engine. The cylinder heads are disposed on opposite sides of a crankcase including cylinder blocks. Intake valves and exhaust valves in each cylinder are disposed in the same arrangement at every so that the distance between the intake valves are equal to each other, and an intake passage in each cylinder head is so formed as to communicate the intake valves with two openings. The openings are located at a position between adjacent intake valves so that the intake passages for every cylinder are equal in length and exahust passages are exclusively provided for each exhaust valve.