Engine cooling system

Patent metadata

Field	Value
Publication number	US-9790838-B2
Application number	US-201514825874-A
Country	US
Kind code	B2
Filing date	Aug 13, 2015
Priority date	Oct 29, 2014
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

An engine cooling system for cooling a cylinder head and a cylinder block separately may include a cylinder block having cylinders arranged from a front side to a rear side of an engine with a block water jacket formed therein around the cylinders, a cylinder head fastened to a top side of the cylinder block with a head water jacket formed therein from the front side to the rear side of the engine, a water pump mounted to a front side of the cylinder block for pumping coolant to a front of the block water jacket, and a coolant control valve arranged in a rear side of the cylinder block and the cylinder head to have a first end connected to a rear end of the block water jacket and a second end connected to a rear end of the head water jacket for having the coolant supplied thereto.

First claim

What is claimed is:

1. An engine cooling system for cooling a cylinder head and a cylinder block separately, the engine cooling system comprising:
a cylinder block having cylinders arranged from a front side to a rear side of an engine with a block water jacket formed therein around the cylinders;
a cylinder head fastened to a top side of the cylinder block with a head water jacket formed therein from the front side to the rear side of the engine;
a water pump mounted to a front side of the cylinder block for pumping coolant to a front of the block water jacket;
a coolant control valve arranged in a rear side of the cylinder block and the cylinder head to have a first end connected to a rear end of the block water jacket and a second end connected to a rear end of the head water jacket for having the coolant supplied thereto;
a block cross drill hole formed in the block water jacket between cylinder bores for connecting the block water jacket from the intake side to the exhaust side; and
a block packing of a predetermined length of a pipe shape inserted in each of a front side and a rear side of the block water jacket by a pressure from a top side to a lower side of the block water jacket to a predetermined distance for making the coolant flow through the block cross drill hole,
wherein a connection passage is formed between a top side rear end of the block water jacket and a bottom side rear end of the head water jacket for supplying the coolant supplied to the block water jacket to the head water jacket.

2. The engine cooling system of claim 1 , wherein the block water jacket has a block insert inserted in, and arranged on, a lower side of the block water jacket with a shape for directing the coolant to an upper side of the block water jacket.

3. The engine cooling system of claim 1 , wherein the block cross drill hole is formed by drilling.

4. The engine cooling system of claim 1 , wherein the block packing of a cylindrical pipe structure is formed of an elastic material for inserting between the block water jackets with a pressure to deform elastically.

5. The engine cooling system of claim 1 , wherein the block packing blocks a portion of an upper side of the block water jacket.

6. The engine cooling system of claim 1 , wherein the connection passage comprises:
an exhaust side connection passage formed on an exhaust side with reference to a center portion of the cylinder block; and
an intake side connection passage formed on an intake side of the cylinder block.

7. The engine cooling system of claim 6 , wherein the exhaust side connection passage has a larger cross-sectional area than a cross-sectional area of the intake side connection passage to have a higher coolant flow rate of the coolant flowing through the exhaust side connection passage than the coolant flow rate flowing through the intake side connection passage.

8. The engine cooling system of claim 6 , wherein a block water jacket inlet for connecting the water pump to the block water jacket is arranged on the intake side.

9. The engine cooling system of claim 6 , further comprising a jacket enlarged portion which is a front direction enlargement of the block water jacket formed for having the coolant supplied thereto from the water pump and supplying the coolant to the head water jacket.

10. The engine cooling system of claim 6 , further comprising:
a gasket arranged between the cylinder block and the cylinder head; and
a block water jacket outlet formed in a top side of the rear side of the block water jacket for moving the coolant upward.

11. The engine cooling system of claim 3 , wherein the block cross drill hole is connected with the block water jacket by at least two positions in the exhaust side, and the block cross drill hole is connected with the block water jacket by at least one position in the intake side.

12. The engine cooling system of claim 10 , wherein the gasket includes at least two holes formed respectively matched to the exhaust side connection passage and the intake side connection passage and at least one hole formed matched to the block water jacket outlet.

13. The engine cooling system of claim 4 , wherein the block packing is formed of rubber.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Yoon Seok Jun
• Hwang Joong Hyun

Classifications

• F01P2003/027

  Cooling cylinders and cylinder heads in parallel · CPC title

• F01P7/14

  the coolant being liquid · CPC title

• F01P3/02 Primary

  Arrangements for cooling cylinders or cylinder heads · CPC title

• F01P2007/146

  using valves · CPC title

• F01P2007/143

  using restrictions · CPC title