Liquid-cooled cylinder head

Patent metadata

Field	Value
Publication number	US-11598283-B2
Application number	US-202017424877-A
Country	US
Kind code	B2
Filing date	Jan 23, 2020
Priority date	Jan 23, 2019
Publication date	Mar 7, 2023
Grant date	Mar 7, 2023

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 hounding the combustion chamber, and the component is connected to the plurality of cylinder head screws.

First claim

The invention claimed is:

1. Liquid-cooled cylinder head comprising:
a component which extends into a combustion chamber,
an upper cooling jacket,
a lower cooling jacket, and
a plurality of valves are 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 is arranged from each valve guide of the plurality of valve guides to the component, the fixed connection is a ring having at least one support, wherein:
the support and the ring extend at least from the oil deck to the fire deck bounding the combustion chamber,
the component is connected to the plurality of cylinder head screws,
the at least one support forms an intake port wall and/or an exhaust port wall or is directly connected to the intake port wall and/or the exhaust port wall, and
the oil deck extends in a tapered manner in a direction of the supports and is configured and arranged for introducing forces, and the oil deck encloses an angle (α) to the component which is greater than 90°.

2. The liquid-cooled cylinder head of claim 1 , wherein the cylinder head screws are indirectly connected to the plurality of valve guides.

3. 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.

4. The liquid-cooled cylinder head of claim 3 , wherein the ring and the support are formed from a single piece of material.

5. The liquid-cooled cylinder head of claim 1 , wherein the support extends parallel to a cylinder axis of the cylinder head.

6. The liquid-cooled cylinder head of claim 1 , wherein the supports are partition walls which at least partially separate the upper cooling jacket and the lower cooling jacket.

7. The liquid-cooled cylinder head of claim 1 , further including a plurality of walls, each wall positioned between two cylinder head screws of the plurality of cylinder head screws, and
wherein each wall extends from the oil deck of the cylinder head to the fire deck bounding the combustion chamber.

8. The liquid-cooled cylinder head of claim 7 , further including at least one rib, and
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.

9. The liquid-cooled cylinder head of claim 8 , wherein the rib connects two cylinder head screws of the plurality of cylinder head screws, each via the wall, to the ring, wherein the rib is configured and arranged to introduce forces to the ring from the two cylinder head screw.

10. The liquid-cooled cylinder head of claim 8 , 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.

11. The liquid-cooled cylinder head of claim 8 , further including
an intermediate deck of the cylinder head
a further rib arranged in the intermediate deck of the cylinder head, and
wherein the at least one support is directly connected to the further rib.

12. The liquid-cooled cylinder head of claim 11 ,
wherein the further rib is arranged in an intermediate deck of the cylinder head.

13. The liquid-cooled cylinder head of claim 8 , further including at least one rib, and
wherein—at least two mutually opposite cylinder head screws are each connected to a support via a rib.

14. The liquid-cooled cylinder head of claim 1 , wherein the plurality of cylinder head screws include at least four cylinder head screws for connection to a cylinder block.

15. The liquid-cooled cylinder head of claim 14 , wherein the plurality of cylinder head screws are arranged on a common pitch circle and the pitch circle has its center in the region of a cylinder axis.

16. The liquid-cooled cylinder head of claim 15 , wherein the plurality of cylinder head screws are arranged uniformly on said pitch circle.

17. The liquid-cooled cylinder head of claim 14 , wherein the plurality of cylinder head screws include six cylinder head screws for connection to a cylinder block.

18. The liquid-cooled cylinder head of claim 14 , wherein the plurality of cylinder head screws include eight cylinder head screws for connection to a cylinder block.

19. The liquid-cooled cylinder head of claim 1 , wherein at least two cylinder head screws of the plurality of cylinder head screws are arranged in an exhaust port wall.

20. The liquid-cooled cylinder head of claim 1 , wherein at least two cylinder head screws of the plurality of cylinder head screws are arranged in an intake port wall.

21. 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.

22. 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.

Assignees

• Avl List Gmbh

Inventors

• Klampfer Martin
• Zurk Andreas

Classifications

• F02F1/40

  cylinder heads with means for directing, guiding, or distributing liquid stream · CPC title

• F02F11/002

  involving cylinder heads · CPC title

• F02F1/4285

  of both intake and exhaust channel · CPC title

• F02F2007/0063

  Head bolts; Arrangements of cylinder head bolts · CPC title

• F01L3/08

  Valves guides; Sealing of valve stem, e.g. sealing by lubricant · CPC title