Direct injection spark ignition engine height rolls and flows air passage structure and engine

The utility model relates to a direct injection spark ignition engine height rolls and flows air passage structure, including the intake duct, the one end of intake duct is the entry, and the other end of intake duct is the aditus laryngis, and the aditus laryngis is used for and the valve cooperates in order to realize intercommunication and the wall between intake duct and the combustion chamber, is equipped with the boss that is used for installing valve guide on the intake duct, is equipped with sunken curved surface on the inner wall of intake duct, and the curved surface sets up with the boss relatively, and the curved surface is used for changing the flow direction of air current to the air current that the messenger flowed through the curved surface leaves curved surface one side entering combustion chamber far away from the aditus laryngis. The utility model also discloses an engine that rolls including above -mentioned direct injection spark ignition engine height and flows air passage structure. The utility model discloses simple structure, low cost, when guaranteeing intake duct circulation characteristic, that has improved the air current that gets into in the combustion chamber rolls a class intensity, messenger's oil gas intensive mixing in the combustion chamber to improve the combustion efficiency of engine, be favorable to the energy saving and emission reduction of engine.