Air intake device for direct injection oil engine, has internal vertical separation wall dividing intake duct into two parts up to point close to axle of intake valve, where section of parts of duct is differentiated near intake chamber

摘要

The device has a single tangential intake duct (1) connecting a cylinder head of an internal combustion engine to an intake chamber in a cylinder (3) and tangentially opening into the cylinder. The intake duct is closed by an intake valve, and an internal vertical separation wall (6) divides the duct into two parts (1a, 1b) up to a point close to an axle (4a) of the intake valve. A section of the parts of the duct is differentiated near the intake chamber. A board (7) is placed in a connection zone between the vertical separation wall and the intake chamber.