Internal Combustion Engine with an Improved Charging Action in the Combustion Chamber
A cylinder head arrangement is provided for an internal combustion engine of a motor vehicle. The cylinder head arrangement includes, but is not limited to a combustion chamber, a first intake valve in a first intake port, as well as a first exhaust valve in a first exhaust port and a second exhaust valve in a second exhaust port ( 19 ). The second exhaust port is realized in such a way that a gas flow from the second exhaust port back into the combustion chamber results in an at least partially swirling flow in the combustion chamber.
1 - 12 . (canceled)
13 . A cylinder head for an internal combustion engine of a motor vehicle, comprising:
a combustion chamber;
a first intake valve in a first intake valve seat of a first intake port in said combustion chamber;
a first exhaust valve in a first exhaust valve seat of a first exhaust port in said combustion chamber; and
a second exhaust valve in a second exhaust valve seat of a second exhaust port in said combustion chamber,
wherein at least one of the first exhaust port and the second exhaust port are adapted to provide at least one of a gas flow from the first exhaust port back into the combustion chamber and a gas flow from the second exhaust port back into the combustion chamber that results in an at least partially swirling flow in the combustion chamber,
wherein at least one of a first masking elevation is provided in the first exhaust port in a region of the first exhaust valve seat and a second masking elevation is provided in the second exhaust port in a region of the second exhaust valve seat,
wherein at least one of the walls of the first masking elevation and the second masking elevation are adapted in such a way that gas flows from at least one of the first exhaust port back into the combustion chamber and from the second exhaust port back into the combustion chamber which flow along these walls are deflected away from a center axis of the combustion chamber and toward a side wall of the combustion chamber
wherein after discharging combustion gas from at least one of the exhaust ports of the combustion chamber, exhaust gas is taken in into the combustion chamber from at least one the exhaust ports while a fresh fuel/air mixture is taken in through at least of the intake ports of the combustion chamber, and
wherein a layering is created in the combustion chamber in which an uncombusted fuel/air mixture is situated in an interior of the combustion chamber and combusted combustion gas accumulates around this region.
14 . The cylinder head according to claim 1 , wherein the first intake port is adapted such that a gas flow from the first intake port into the combustion chamber results in an at least partially swirling flow in the combustion chamber.
15 . The cylinder head according to claim 1 , further comprising a second intake valve in a second intake valve seat of a second intake port.
16 . The cylinder head according to claim 1 , wherein at least one of the two intake ports is adapted such that a gas flow from the at least one of the two intake ports into the combustion chamber results in an at least partially swirling flow in the combustion chamber, and in that the exhaust port situated diagonally opposite to the center axis of the combustion chamber is realized in such a way that a gas flow from this exhaust port back into the combustion chamber results in an at least partially swirling flow in the combustion chamber.