Cooling system for an internal combustion engine

Patent metadata

Field	Value
Publication number	US-10107172-B2
Application number	US-201615295426-A
Country	US
Kind code	B2
Filing date	Oct 17, 2016
Priority date	Oct 16, 2015
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

A cooling system for an internal combustion engine is disclosed. The engine has a cylinder block and a cylinder head. The cooling system includes a cylinder head cooling circuit and a cylinder block cooling circuit. The cylinder block cooling circuit includes cylinder block core prints channels on an upper portion thereof. The cylinder head cooling circuit includes a groove connected to an outlet of the cooling system and at least one cylinder block core print channel provided with at least one passage connecting the cylinder block cooling circuit with the groove.

First claim

What is claimed is:

1. A cooling system for an internal combustion engine having a cylinder block and a cylinder head, the cooling system comprising:
a cylinder block cooling circuit including cylinder block core prints channels on an upper portion thereof, the cylinder block core prints channels partially defining a plurality of water jackets for combustion chambers of the internal combustion engine;
a cylinder head cooling circuit;
an interface defined between the cylinder block cooling circuit and the cylinder head cooling circuit, the interface extending in a lateral direction to intersect the plurality of water jackets; and
a fluid outlet of the cylinder block cooling circuit on the upper portion thereof;
the cylinder head cooling circuit including a groove that extends along the interface and amongst the plurality of water jackets;
at least one of the cylinder block core prints channels provided with at least one passage fluidically connecting the cylinder block cooling circuit with the groove; and
the groove including an upstream area and a downstream area that are spaced apart in the lateral direction;
the fluid outlet being fluidically connected to the groove at the downstream area.

2. The cooling system according to claim 1 , further comprising a gasket configured to seal the interface between the cylinder head cooling circuit and the cylinder block cooling circuit, said at least one passage being provided inside the gasket.

3. The cooling system according to claim 1 , wherein the at least one passage is fluidically connected to an upper part of the cylinder block core prints channels.

4. The cooling system according to claim 1 , wherein the cylinder head cooling circuit comprises cylinder head core print channels connecting the cylinder head cooling circuit with the groove.

5. The cooling system according to claim 1 , wherein the groove is provided on a deckface of the cylinder head.

6. The cooling system according to claim 5 , wherein the groove comprises a machined groove in the deckface of the cylinder head.

7. The cooling system according to claim 5 , wherein the groove comprises a cast groove formed in the deckface of the cylinder head.

8. An internal combustion engine comprising:
a cylinder block;
a cylinder head; and
a cooling system comprising:
a cylinder block cooling circuit including cylinder block core prints channels on an upper portion thereof, the cylinder block core prints channels partially defining a plurality of water jackets for combustion chambers of the internal combustion engine;
a cylinder head cooling circuit;
an interface defined between the cylinder block cooling circuit and the cylinder head cooling circuit, the interface extending in a lateral direction to intersect the plurality of water jackets; and
a fluid outlet of the cylinder block cooling circuit on the upper portion thereof;
the cylinder head cooling circuit including a groove that extends along the interface and amongst the plurality of water jackets;
at least one of the cylinder block core prints channels provided with at least one passage fluidically connecting the cylinder block cooling circuit with the groove; and
the groove including an upstream area and a downstream area that are spaced apart in the lateral direction;
the fluid outlet being fluidically connected to the groove at the downstream area.

9. The cooling system of claim 1 , wherein the upstream area and the downstream area are disposed on opposite ends of the interface;
wherein the downstream area is fluidically connected to the fluid outlet of the cylinder block cooling circuit;
wherein the groove extends continuously from the upstream area to the downstream area.

10. The cooling system of claim 9 , wherein the combustion chambers are arranged in a sequence from a first chamber to a second chamber;
wherein the upstream area of the groove contours and partially encompasses the first chamber; and
wherein the downstream area of the groove contours and partially encompasses the second chamber.

11. The cooling system of claim 1 , wherein the at least one of the cylinder block core prints channels forms an upper part of the cylinder block cooling circuit;
the at least one passage fluidically connecting the upper part to the groove;
the at least one of the cylinder block core prints channels forming a lower part that is spaced apart at a distance in a longitudinal direction from the groove; and
the lower part disposed, in a circumferential direction, between the upper part and the fluid outlet;
the lower part fluidly connecting the upper part and the fluid outlet.

12. A cooling system for an internal combustion engine having a cylinder block and a cylinder head, the cooling system comprising:
a cylinder block cooling circuit including cylinder block core prints channels on an upper portion thereof, the cylinder block core prints channels partially defining a plurality of water jackets for respective combustion chambers of the internal combustion engine, the plurality of water jackets arranged in a series in a lateral direction;
a cylinder head cooling circuit;
a gasket that seals an interface between the cylinder block cooling circuit and the cylinder head cooling circuit, the gasket extending in the lateral direction to intersect the plurality of water jackets;
a fluid outlet of the cylinder block cooling circuit on the upper portion thereof;
the cylinder head cooling circuit including a groove that extends in the lateral direction along the gasket to continuously encompass the combustion chambers;
the groove including an upstream area and a downstream area that are spaced apart in the lateral direction;
the cylinder block core prints channels each provided with a passage that extends through the gasket and that fluidically connects the cylinder block cooling circuit with the groove;
the fluid outlet being fluidically connected to the groove at the downstream area;
the cooling system configured to contain a first fluid flow from the cylinder block cooling circuit to the fluid outlet; and
the cooling system configured to contain a second fluid flow from the cylinder block cooling circuit, through the passages and the gasket to the groove for movement in the lateral direction, generally away from the upstream area to the downstream area and to the fluid outlet.

13. The cooling system of claim 12 , wherein the plurality of combustion chambers are arranged in a sequence from a first chamber to a second chamber;
wherein the upstream area of the groove contours and partially encompasses the first chamber; and
wherein the downstream area of the groove contours and partially encompasses the second chamber.

14. The cooling system of claim 13 , wherein the cylinder block core prints channels form an upper part of the cylinder block cooling circuit;
the passages fluidically connecting the upper part to the groove;
of the cylinder block core prints channels forming a lower part that is spaced apart at a distance, in a longitudinal direction, from the groove;
the lower part disposed, in the lateral direction, between the upper part and the fluid outlet;
the lower part fluidically connecting the upper part and the fluid outlet.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Tempesta Michele
• Palma Andrea
• NUMIDI Fabio

Classifications

• F02F1/10

  for liquid cooling · CPC title

• F01P2003/021

  Cooling cylinders · CPC title

• F01P2003/027

  Cooling cylinders and cylinder heads in parallel · CPC title

• F02F2001/104

  using an open deck, i.e. the water jacket is open at the block top face · CPC title

• F01P3/02 Primary

  Arrangements for cooling cylinders or cylinder heads · CPC title