US Patent 7308875 Intake control apparatus of internal combustion engine

An intake control apparatus of an internal combustion engine including respective intake valves 5 opened when intake air reaching respective branch intake paths r1 from a main intake path Rim of the internal combustion engine is introduced to respective combustion chamber 2, and respective intake control valves 15 respectively arranged upstream from the intake valves on the respective branch intake paths for adjusting an intake introducing time period Tq for introducing intake air into the combustion chamber 2 in which both of the valves are brought into an opened state by controller 17.