Abstract: Within each of: (1) an internal combustion engine system; (2) a transportation vehicle which incorporates the internal combustion engine system; and (3) a method for operating the internal combustion engine system, there is employed: (1) an internal combustion engine having a minimum of one combustion chamber; (2) a gas compressor absent an associated compressed gas tank, where the gas compressor is driven by a power output of the internal combustion engine; and (3) a controller programmed for providing a compressed gas charge from the gas compressor to the minimum of one combustion chamber during a portion of a compression cycle within the minimum of one combustion chamber, but not including a beginning portion of the compression cycle within the minimum of one combustion chamber. Each of the internal combustion engine system, transportation vehicle and method provides enhanced internal combustion engine performance and economy.

Abstract: An induction system for an internal combustion engine includes a turbulence-inducing structure, 18, extending across the flow path of a primary runner, 10. The turbulence-inducing structure, 18, is used in combination with a dual or single port intake design.

Abstract: An intake valve lift control system for optimizing both rotational movement and inducted flow of a mixture inducted into the chambers of an internal combustion engine. The combustion chamber includes a mask partially surrounding the intake valve seat thereby imparting rotational movement to the inducted mixture. During light load engine operating conditions, maximum valve lift displacement is limited to the height of the mask such that rotational movement of the inducted mixture is maximized during the entire intake stroke of the intake valve. During heavy load engine operating conditions in which optimal flow is desire, maximum valve lift displacement is extended beyond the mask such that flow, rather than rotational movement, is optimized. Commencement of valve lift is also delayed during normal engine operations such that rotational movement of the inducted mixture is further optimized.