Cylinder head for an internal combustion engine, internal combustion engine, and method for operating an internal combustion engine
AssigneeDr. Ing. h.c. F. Porsche Aktiengesellschaft
InventorsAndre Casal Kulzer, Jerome Munier
Life of this patent
Estimating the term…
Abstract
A cylinder head (4) for an internal combustion engine has a first inlet duct (8) that is configured to bring about a first tumbling movement and a second inlet duct (9) that is configured to bring about a second tumbling movement of the air quantities that flow through the cylinder head (4) and into a cylinder of the internal combustion engine (1). An internal combustion engine and a method for operating an internal combustion engine also are provided.
Claims17
A cylinder head for an internal combustion engine that has a crankcase with a cylinder having a piston that moves in the cylinder in an oscillating manner, the cylinder head comprising at least one outlet duct that is selectively openable and closeable and first and second inlet ducts that are selectively openable closeable, the cylinder head, the cylinder and the piston forming a combustion chamber, wherein the first inlet duct is configured to generate a first tumbling movement of an air quantity that flows through the first inlet duct and into the cylinder, and the second inlet duct being configured to generate a second tumbling movement of the air quantity that flows through the second inlet duct and into the cylinder.
A method for operating an internal combustion engine, the internal combustion engine having a crankcase that has a cylinder with a piston that moves in the cylinder in an oscillating manner, and a cylinder head that has at least one outlet duct and two inlet ducts, an outlet valve for selectively opening and closing the outlet duct and inlet valves for selectively opening and closing the inlet ducts, the cylinder head, the cylinder and the piston defining a combustion chamber, and each valve having a valve lift, an overall air quantity for the combustion of a fuel quantity in the cylinder being sucked in via the inlet ducts, and the overall air quantity consisting of an air quantity that is sucked in via the first inlet duct and an air quantity that is sucked in from the second inlet duct, and the two air quantities that are sucked in having a certain movement in the cylinder, the method comprising:
- using the first inlet duct for generating a tumbling movement of the air quantity that is sucked in via the first inlet duct, and
- using the second inlet duct for generating a reverse tumbling movement of the air quantity that is sucked in via the second inlet duct.
Dependencies are inferred from the claim text.