Two-cylinder overhead-valve V-engine

摘要

A two-cylinder overhead-valve V-engine has two cylinders arranged so as to form a V-bank (S). Each cylinder is provided with push rods (15, 16) for operating an intake valve rocker arm (12) and an exhaust valve rocker arm (13). The push rods (15, 16) of each cylinder extend gradually away from each other toward a valve rocker arm chamber. An air intake passage is formed between the push rods (15, 16) in the cylinder head (3) of each cylinder. An air intake port (24) is formed in the cylinder head (3) so as to open into the V-bank (S). The air intake port (24) of each cylinder head (3) is connected by the air intake passage formed in the V-bank (S) to a carburetor disposed in the V-bank (S). A water jacket outlet (25) is formed near the air intake port (24) in a part of the cylinder head (3) in between the push rods(15,16). The water jacket outlets (25) of the cylinder heads (3) are connected by a cooling water passage adjacent to the air intake passage.