AN INLET DUCT FOR GENERATING HIGH SPIN AND DRALL

摘要

Methods and systems for generating swirl in intake air by establishing an asymmetric ring opening for flowing intake air into a combustion chamber of an engine cylinder are provided. The asymmetric ring opening can be made by changing an angle of an intake valve disk of an intake valve. The angle of the intake valve disk may vary based on engine operating parameters by extending or retracting one or more tie rods coupled to an annular swivel guide received within an annular channel.