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US 2009/0255490 A1Published application
Cylinder Head
AssigneeAVL List GmbH
InventorsRobert Poschl, Alexander Maier
Life of this patent
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AssigneeAVL List GmbH
InventorsRobert Poschl, Alexander Maier
Estimating the term…
The invention relates to a cylinder head (1) for a liquid-cooled internal combustion engine with several cylinders, comprising at least one intake port (5) and at least two exhaust ports (4) per cylinder (1), at least one first cooling chamber (2) adjacent to a fire deck and at least one second cooling chamber (3) adjacent to the first cooling chamber (2), with the second cooling chamber (3) extending over several cylinders. In order to improve cooling in the areas subjected to great thermal stress it is provided that at least one first cooling chamber (2) is provided per cylinder and the first cooling chambers (2) of two adjacent cylinders are separated from one another, with each first cooling chamber (2) comprising at least one first opening (7) and at least one transfer opening (8) to the second cooling chamber (3), and the first cooling chamber (2) is flowed through between the first opening (7) and the transfer opening (8) substantially in the longitudinal direction of the cylinder head (1).
A cylinder head (1) for a liquid-cooled internal combustion engine with several cylinders, comprising at least one intake port (5) and at least two exhaust ports (4) per cylinder (1), at least one first cooling chamber (2) adjacent to a fire deck and at least one second cooling chamber (3) adjacent to the first cooling chamber (2), with the second cooling chamber (3) extending over several cylinders, wherein at least one first cooling chamber (2) is provided per cylinder and the first cooling chambers (2) of two adjacent cylinders are separated from one another, with each first cooling chamber (2) comprising at least one first opening (7) and at least one transfer opening (8) to the second cooling chamber (3), and the first cooling chamber (2) is flowed through between the first opening (7) and the transfer opening (8) substantially in the longitudinal direction of the cylinder head (1).
A cylinder head for several cylinders, comprising an intake side (E) with at least one intake valve with at least one intake valve seat per cylinder and an exhaust side (A) with at least two exhaust valves and at least two exhaust valve seats (106a, 106b) per cylinder, a parallel or twisted valve image, a central cooling chamber (102) which is flowed through substantially in the longitudinal direction of the cylinder head, with a cooling duct (113) being provided in the area of the exhaust valve bridge (110) between the exhaust valves, wherein a guide device for deflecting the longitudinal coolant flow is provided in the cooling duct (113) between the two exhaust valve seats (106a, 106b) for each cylinder in the area of at least one exhaust valve seat (106a, 106b).
Dependencies are inferred from the claim text.