Internal combustion engine

Patent metadata

Field	Value
Publication number	US-9828935-B2
Application number	US-201314759145-A
Country	US
Kind code	B2
Filing date	Dec 5, 2013
Priority date	Dec 5, 2012
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

An internal combustion engine includes a plurality of cylinders, each of which two intake valves and two exhaust valves, respectively arranged in a valve mount of a cylinder head of the internal combustion engine as well as a coolant distributing chamber and a coolant accumulating chamber being associated to. For each cylinder two coolant ducts are formed in the cylinder head and each is fluidly connected to the corresponding coolant distributing chamber and the corresponding coolant accumulating chamber. A first one of the coolant ducts on a first side extends about a first one of the intake valves and on a second side opposite the first side about a first one of the exhaust valves, and a second one of the coolant ducts extends on the first side about a second one of the intake valves and on the second side about a second one of the exhaust valves.

First claim

What is claimed is:

1. An internal combustion engine, comprising:
a plurality of cylinders, each cylinder operably connected to a respective coolant distributing chamber and a respective coolant accumulating chamber; and
a cylinder head including a plurality of valve mounts associated to the cylinders such that each of the cylinders is operably connected to two of the valve mounts for receiving two intake valves, respectively, and operably connected to two of the valve mounts for receiving two exhaust valves, respectively, said cylinder head including for each of the cylinders two coolant ducts fluidly connected to the coolant distributing chamber and the coolant accumulating chamber, said coolant ducts extending fluidly separated from each other from the coolant distributing chamber to the coolant accumulating chamber, wherein the two coolant ducts have a curved configuration such that a first one of the coolant ducts is configured to extend in part on one side of a first one of the intake valves and in part on another side of a first one of the exhaust valves, and a second one of the coolant ducts is configured to extend in part on one side of a second one of the intake valves and another side of a second one of the exhaust valves.

2. The internal combustion engine of claim 1 , wherein each of the cooling ducts are in a curved shape so that the first one of the ducts extends outside of the first one of the intake valves and inside of the first one of the exhaust valves, and the second one of the coolant ducts extends inside of the second one of the intake valves and outside of the second one of the exhaust valves.

3. The internal combustion engine of claim 1 , wherein each of the cooling ducts are in a curved shape so that the first one of the ducts extends inside of the first one of the intake valves and outside of the first one of the exhaust valves, and the second one of the coolant ducts extends outside of the second one of the intake valves and inside of the second one of the exhaust valves.

4. The internal combustion engine of claim 1 , wherein the coolant ducts are arranged in a same plane.

5. The internal combustion engine of claim 4 , wherein the plane is perpendicular to a longitudinal center axis of the cylinder.

6. The internal combustion engine of claim 1 , further comprising a coolant circuit, said coolant distributing chamber having a coolant inlet port in fluid communication with the coolant circuit, and said coolant accumulating chamber having a coolant outlet port in fluid communication with the coolant circuit.

7. The internal combustion engine of claim 1 , wherein the coolant ducts have the same flow cross section.

8. The internal combustion engine of claim 1 , wherein the first of the intake valves and the first of the exhaust valves as well as the second of the intake valves and the second of the exhaust valves are respectively arranged in symmetry in relation to a symmetry plane extending through a longitudinal center axis of the cylinder.

9. The internal combustion engine of claim 1 , further comprising a coolant conduit branching between the coolant distributing chamber and the coolant accumulating chamber from at least one of the coolant ducts.

Assignees

• Audi Ag

Inventors

• Ortmann Matthias

Classifications

• F02F1/4214

  specially adapted for four or more valves per cylinder · CPC title

• F01P3/02

  Arrangements for cooling cylinders or cylinder heads · CPC title

• F01P2003/024

  Cooling cylinder heads · CPC title

• F02F1/40 Primary

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