# US 11,905,909 B2 · Liquid-cooled cylinder head > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,905,909 B2 - Document ID: US11905909B2 - Status: Granted - Kind: B2 - Application number: 18/104,664 - Filed: 2023-02-01 - Published: 2023-06-08 - Granted: 2024-02-20 - Earliest claimed: 2023-02-01 - Assignees: AVL List GmbH - Applicants: Avl List GmbH - Inventors: Martin Klampfer; Andreas Zurk - Web page: https://patentgrep.com/patent/US11905909B2 ## CPC - F02F 1/16: Cylinder liners of wet type - F02F 1/242: {Arrangement of spark plugs or injectors} - F01L 3/08: Valves guides; Sealing of valve stem, e.g. sealing by lubricant - F02F 1/40: cylinder heads with means for directing, guiding, or distributing liquid stream - F02F 1/4285: {of both intake and exhaust channel} - F02F: CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES - F01L: CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES ## Abstract Various embodiments of the present disclosure are directed to liquid-cooled cylinder heads. In one example embodiment, a cylinder head is disclosed including a component which extends into a combustion chamber, an upper cooling jacked, a lower cooling jacket, a plurality of valves arranged around the component, a plurality of cylinder head screws, an oil deck, a fire deck, a plurality of valve guides, and a fixed connection. The fixed connection is arranged from each valve guide to the component, and is a ring having at least one support. The support and the ring extend at least from the oil deck to the fire deck thereby bounding the combustion chamber, and the component is connected to the plurality of cylinder head screws. ## Claims ### Claim 1 A liquid-cooled cylinder head, comprising: a component which extends into a combustion chamber; an oil deck; a fire deck; a plurality of valve guides; and a fixed connection arranged from each valve guide of the plurality of valve guides to the component, the fixed connection including a ring having at least one support, wherein: the at least one support and the ring extend at least from the oil deck to the fire deck bounding the combustion chamber, the oil deck extends in a tapered manner in a direction of the at least one support and is configured and arranged for introducing forces, and the oil deck encloses an angle (α) to the component which is greater than 90°. ### Claim 2 (depends on 1) The liquid-cooled cylinder head of claim 1, further comprising a plurality of cylinder head screws, wherein the plurality of cylinder head screws are indirectly connected to the plurality of valve guides. ### Claim 3 (depends on 2) The liquid-cooled cylinder head of claim 2, further comprising a plurality of walls, each wall positioned between two cylinder head screws of the plurality of cylinder head screws, wherein each wall extends from the oil deck of the cylinder head to the fire deck, bounding the combustion chamber. ### Claim 4 (depends on 3) The liquid-cooled cylinder head of claim 3, further comprising at least one rib, wherein at least one cylinder head screw of the plurality of cylinder head screws is connected to the at least one support via the at least one rib. ### Claim 5 (depends on 4) The liquid-cooled cylinder head of claim 4, wherein the at least one rib connects two cylinder head screws of the plurality of cylinder head screws, each via the wall, to the ring, wherein the at least one rib is configured and arranged to introduce forces to the ring from the two cylinder head screws. ### Claim 6 (depends on 4) The liquid-cooled cylinder head of claim 4, wherein the at least one rib includes three ribs provided in each case along a cylinder axis between every two cylinder head screws of the plurality of cylinder head screws. ### Claim 7 (depends on 4) The liquid-cooled cylinder head of claim 4, further comprising: an intermediate deck of the cylinder head; an additional rib arranged in the intermediate deck of the cylinder head; and wherein the at least one support is directly connected to the further rib. ### Claim 8 (depends on 2) The liquid-cooled cylinder head of claim 2, wherein: the plurality of cylinder head screws are arranged on a common pitch circle; the pitch circle has its center in the region of a cylinder axis; and the plurality of cylinder head screws are arranged uniformly on said pitch circle. ### Claim 9 (depends on 2) The liquid-cooled cylinder head of claim 2, wherein at least two cylinder head screws of the plurality of cylinder head screws are arranged in an exhaust port wall. ### Claim 10 (depends on 2) The liquid-cooled cylinder head of claim 2, wherein at least two cylinder head screws of the plurality of cylinder head screws are arranged in an intake port wall. ### Claim 11 (depends on 1) The liquid-cooled cylinder head of claim 1, wherein the ring radially surrounds the component, wherein the ring is connected to the support in the region of the valve guides. ### Claim 12 (depends on 1) The liquid-cooled cylinder head of claim 1, wherein the at least one support extends parallel to a cylinder axis of the cylinder head. ### Claim 13 (depends on 1) The liquid-cooled cylinder head of claim 1, wherein the at least one support is a partition wall which at least partially separates the upper cooling jacket and the lower cooling jacket. ### Claim 14 (depends on 1) The liquid-cooled cylinder head of claim 1, further including two intake valves, and two exhaust valves are provided, wherein at least two cylinder head screws of the plurality of cylinder head screws are arranged on an axis which mutually connects two valve bridges between intake and exhaust. ### Claim 15 (depends on 1) The liquid-cooled cylinder head of claim 1, wherein the plurality of cylinder head screws are connected by walls, wherein each wall is arranged in a plane parallel to a cylinder axis. ### Claim 16 (depends on 1) The liquid-cooled cylinder head of claim 1, wherein the ring and the at least one support are formed from a single piece of material. ### Claim 17 (depends on 1) The liquid-cooled cylinder head of claim 1, wherein the oil deck encloses an angle (α) to the component which is between 110° and 144. ### Claim 18 (depends on 1) The liquid-cooled cylinder head of claim 1, wherein the oil deck encloses an angle (α) to the component which is between 120° and 135°. ### Claim 19 (depends on 1) The liquid-cooled cylinder head of claim 1, further including at least one rib, wherein—at least two mutually opposite cylinder head screws are each connected to the at least one support via the at least one rib. ### Claim 20 (depends on 19) The liquid-cooled cylinder head of claim 19, wherein the at least one rib is arranged in an intermediate deck of the cylinder head.