Engine cooling arrangement

Patent metadata

Field	Value
Publication number	US-11255291-B2
Application number	US-202016923605-A
Country	US
Kind code	B2
Filing date	Jul 8, 2020
Priority date	Jul 10, 2019
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

Systems are provided for a cooling arrangement of an engine. In one example, a system includes a first coolant passage and a second coolant passage arranged in a cylinder bridge between directly adjacent cylinders, wherein the first coolant passage and the second coolant passage are separated from one another.

First claim

The invention claimed is:

1. An assembly, comprising:
a cylinder head and a cylinder block of an internal combustion engine of a motor vehicle, wherein the cylinder head and the cylinder block jointly form two or more cylinders, which are at least partially cooled via coolant in a cooling jacket arranged in the cylinder block of the internal combustion engine, wherein the cylinders each comprise an upper region arranged in the cylinder head and the cylinder block and a lower region situated below the upper region in the cylinder block; and
a cylinder bridge arranged directly between two cylinders, wherein a first coolant channel is arranged in the upper region and a second coolant channel is arranged separately from the first coolant channel in the lower region, wherein the first coolant channel directs coolant from only the upper region directly to a portion of a coolant manifold arranged in the cylinder head directly between adjacent cylinders of the two or more cylinders, and wherein the second coolant channel directs coolant from only the lower region direct to a portion of the coolant manifold outside of a space between two adjacent cylinders.

2. The assembly of claim 1 , wherein the first coolant channel fluidly couples an upper region of the cooling jacket to the coolant manifold and the second coolant channel fluidly couples a lower region of the cooling jacket to the coolant manifold, wherein the upper region is vertically higher than the lower region relative to a direction of gravity.

3. The assembly of claim 2 , wherein each cylinder of the two or more cylinders comprises a cylinder axis which corresponds to a central axis of a cylinder, wherein a first inlet of the first coolant channel and a second inlet of the second coolant channel are arranged along a line, wherein the line is oriented parallel to the cylinder axis.

4. The assembly of claim 1 , wherein the second coolant channel is shaped as an obliquely inclined passage bore.

5. The assembly of claim 1 , wherein the first coolant channel is shaped as an obliquely inclined passage bore.

6. The assembly of claim 1 , wherein the first coolant channel is more curved than the second coolant channel.

7. The assembly of claim 1 , wherein the cylinder block comprises only aluminum.

8. The assembly of claim 1 , wherein the two or more cylinders are free of a cylinder liner.

9. An engine, comprising:
a cylinder head and a cylinder block shaping a plurality of cylinders;
a cylinder bridge is arranged between directly adjacent cylinders of the plurality of cylinders, wherein the cylinder bridge comprises a first coolant channel and a second coolant channel, wherein the first coolant channel extends from an upper region of the cylinder bridge to a portion of a coolant manifold directly between adjacent cylinders in the cylinder head, and wherein the second coolant channel extends from a lower region of the cylinder bridge to a portion of the coolant manifold outside of a space directly between adjacent cylinders.

10. The engine of claim 9 , wherein the first coolant channel and the second coolant channel fluidly couple a coolant jacket to the coolant manifold.

11. The engine of claim 9 , wherein the first coolant channel and the second coolant channel are completely separate, and wherein coolant in the first coolant channel does not mix with coolant in the second coolant channel.

12. The engine of claim 9 , wherein a length of the first coolant channel is less than a length of the second coolant channel.

13. The engine of claim 9 , wherein a curvature of the first coolant channel is greater than a curvature of the second coolant channel.

14. The engine of claim 9 , wherein a first coolant channel angle of the first coolant channel is less than a second coolant channel angle of the second coolant channel, wherein the first coolant channel angle and the second coolant channel angle are measured relative to a central cylinder axis.

15. The engine of claim 9 , wherein the second coolant channel delivers coolant to a more distal portion of the cylinder bridge than the first coolant channel relative to a coolant jacket.

16. The engine of claim 15 , wherein the first coolant channel and the second coolant channel receive coolant from the coolant jacket along an axis parallel to a cylinder axis, and wherein the first coolant channel receives coolant from a vertically higher portion of the coolant jacket than the second coolant channel.

17. An engine system, comprising:
a cylinder head and a cylinder block shaping a plurality of cylinders;
a cylinder bridge is arranged between directly adjacent cylinders of the plurality of cylinders, wherein the cylinder bridge comprises a first coolant channel and a second coolant channel, wherein the first coolant channel extends from only an upper region of the cylinder bridge to a portion of a coolant manifold directly between adjacent cylinders, and wherein the second coolant channel extends from a lower region of the cylinder bridge to a portion of the coolant manifold outside of a space between adjacent cylinders, and wherein a length of the first coolant channel is less than a length of the second coolant channel.

18. The engine system of claim 17 , wherein the first coolant channel and the second coolant channel conduct coolant in a direction at least partially opposite gravity.

19. The engine system of claim 17 , wherein the plurality of cylinders comprises a cylinder liner.

Assignees

• Ford Global Tech Llc

Inventors

• Steiner Bernd
• Mehring Jan
• Huth Florian
• Heinig Klaus-Peter

Classifications

• F02F1/14 Primary

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

• F02F1/40

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

• F02B3/06

  with compression ignition (compression ignition engines using air or gas for blowing fuel into compressed air in cylinder F02B13/02) · CPC title

• F02F2007/0063

  Head bolts; Arrangements of cylinder head bolts · CPC title

• F02F1/163

  the liner being midsupported · CPC title