Intake passages in cylinder heads of an opposed six-cylinder engine

摘要

Intake passage in cylinder heads of an opposed six-cylinder engine. The cylinder heads are disposed on opposite sides of a crankcase including cylinder blocks. Three cylinders in each cylinder head are arranged in firing order. Intake valves and exhaust valves in each cylinder are disposed in the same arrangement at every cylinder 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 intake valves with an opening. The opening is located at a position between two cylinders which are faster in firing order than the other cylinder.