Device for adjusting the loading motion of the intake air in internal combustion engines

A device for adjusting the loading motion of intake air in internal combustion engines, said device comprising:

• a housing-cover assembly adapted to be connected between an intake module and a cylinder head of an internal combustion engine, the housing-cover assembly including a housing and a cover, the cover including multiple pairs of first and second openings, wherein for each pair of openings, said first opening is associated with a first inlet channel for a cylinder of the internal combustion engine, and said second opening is associated with a second inlet channel for the same cylinder of the internal combustion engine;
• a plurality of helical valves that can be controlled by an actuator, each helical valve located in one of the second openings;
• a plurality of valve shafts coupled to the plurality of helical valves, each valve shaft mounted between the housing and the cover such that attachment of the cover to the housing secures the valve shaft in place;
• and
• at least one coupling rod operable to be controlled by the actuator to rotate the valve shafts to control the helical valves, the at least one coupling rod being substantially enclosed within a chamber defined between an extension of the housing and an extension of the cover.