Split cooling system of internal combusion engine

Patent metadata

Field	Value
Publication number	US-10190477-B2
Application number	US-201615365857-A
Country	US
Kind code	B2
Filing date	Nov 30, 2016
Priority date	Jun 22, 2016
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

A split cooling system of an internal combustion engine may include a water pump configured to circulate cooling water; a cylinder head and a cylinder block configured to be supplied with the cooling water from the water pump; an integrated flow control valve configured to include an inlet provided to be supplied with the cooling water of the cylinder head and a plurality of valves that are configured to be opened or closed to distribute the cooling water introduced through the inlet to an oil heat exchanger, a heater core, and a radiator; and a split cooler configured to be mounted at the cylinder block to provide a split cooling channel in the cylinder block and the cylinder header.

First claim

What is claimed is:

1. A split cooling system of an internal combustion engine, comprising:
a water pump configured to circulate cooling water;
a cylinder head and a cylinder block configured to be supplied with the cooling water from the water pump;
an integrated flow control valve configured to include an inlet provided to be supplied with the cooling water of the cylinder head and a plurality of valves that are configured to be opened or closed to distribute the cooling water introduced through the inlet to an oil heat exchanger, a heater core, and a radiator; and
a split cooler configured to be mounted at the cylinder block to provide a split cooling channel in the cylinder block and the cylinder header,
wherein the split cooler is inserted into a water jacket of the cylinder block and includes:
a base configured to enclose an outside surface of a cylinder along a shape of the cylinder, wherein the base divides a channel within the water jacket into an inside channel and an outside channel, wherein the inside channel facing the outside surface of the cylinder is at an inside of the base and the outside channel facing the water jacket is at an outside of the base wherein the inside channel is disposed inward the base and the outside channel is disposed outward the base in a radial direction of the cylinder, and wherein an upper side of the base in the cylinder block continuously fluid-communicates with the outside channel;
a coupling groove formed to be indented into an inside surface of the base, wherein the inside surface of the base faces the outside surface of the cylinder; and
a sealing member configured to be filled in the coupling groove wherein the sealing member selectively cuts off the inside channel according to a temperature of the cooling water, the sealing member being expanded when the temperature of the cooling water supplied into the water jacket is equal to or higher than a preset temperature to cut off the inside channel between the base and the cylinder, to increase a flow resistance of the cooling water and reduce a heat transfer rate, and

wherein when the inside channel is cut off by the sealing member, a portion of the cooling water flows to the outside channel and surround a full length of the base from a bottom to a top.

2. The split cooling system of claim 1 , wherein the base is formed from a lower side of the cylinder block to a ⅔ point of a height of the cylinder block.

3. The split cooling system of claim 1 , wherein the coupling groove is formed along a horizontal direction of the base and is formed in a closed curve.

4. The split cooling system of claim 1 , wherein the sealing member is ethylene propylene diene M-class (EPDM) rubber and is foamed and then compressed to be foamed when the cooling water is equal to or more than the preset temperature.

5. The split cooling system of claim 1 , wherein siamese parts of the base are provided with a plurality of guide members.

6. The split cooling system of claim 1 , wherein the cylinder block includes a moving channel through which the cooling water of the cylinder block moves to the cylinder head and the cooling water of the cylinder block moves to the cylinder head and then is supplied to the integrated flow control valve together with the cooling water of the cylinder head.

7. The split cooling system of claim 1 , wherein the integrated flow control valve includes at least one motor to control an opening and closing of a first valve, a second valve, and a third valve.

8. The split cooling system of claim 1 , wherein the plurality of valves of the integrated flow control valve include a first valve provided to supply the cooling water to the oil heat exchanger, a second valve provided to supply the cooling water to the heater core, and a third valve provided to supply the cooling water to the radiator.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Yang Kwang Sik
• Park Jun Sik
• Han Bong Hoon

Classifications

• F01P2003/027

  Cooling cylinders and cylinder heads in parallel · CPC title

• F01P2025/62

  Load · CPC title

• F01P3/02 Primary

  Arrangements for cooling cylinders or cylinder heads · CPC title

• F01P2060/04

  Lubricant cooler · CPC title

• F01P2007/146

  using valves · CPC title