Coolant control valve, cooling system provided with the same and control method thereof

Patent metadata

Field	Value
Publication number	US-10550756-B1
Application number	US-201816192049-A
Country	US
Kind code	B1
Filing date	Nov 15, 2018
Priority date	Aug 10, 2018
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

Abstract

A coolant control system for a motor vehicle includes a controller determining whether the output signal of the vehicle satisfies a predetermined driving condition and controlling a coolant control valve including a driving motor. The coolant control valve includes a coolant inflow chamber, a first coolant line, a second coolant line and a third coolant line formed in a valve housing. The coolant control valve further includes a first outer valve, a first inner valve and a second other valve formed in the valve housing, and each of the valves is communicating with each of the coolant lines, selectively and respectively. In addition, each of the valves includes a hole for selectively communicating with a coolant inflow chamber.

First claim

What is claimed is:

1. A coolant control valve comprising:
a valve housing including a coolant inflow chamber, a first coolant line, a second coolant line and a third coolant line;
a first outer valve including a first outer tip protruded and a first outer hole configured for communicating with the second coolant line formed thereto, and the first outer valve movably disposed in the valve housing for blocking the second coolant line and for selectively communicating the first coolant line with the coolant inflow chamber;
a first inner valve including a first inner tip protruded and a first inner hole configured for communicating with the coolant inflow chamber and selectively communicating with the first outer hole, and the first inner valve movably disposed in the first outer valve;
a second outer valve including a second outer tip protruded and the second outer valve movably disposed in the valve housing for selectively communicating the third coolant line with the coolant inflow chamber;
a cam including a first track for contacting the first outer tip and selectively pushing the first outer valve, a second track for contacting the first inner tip and selectively pushing the first inner valve and a third track for contacting the second outer tip and selectively for pushing the second outer valve;
a drive motor configured for selectively rotating the cam; and
a controller configured for controlling an operation of the drive motor.

2. The coolant control valve of claim 1 , wherein the coolant control valve further comprises a cam spring for elastically supporting the cam.

3. The coolant control valve of claim 1 , wherein the coolant control valve further comprises:
a first outer valve spring for elastically supporting the first outer valve,
a first inner valve spring for elastically supporting the first inner valve, and
a second outer valve spring for elastically supporting the second outer valve.

4. The coolant control valve of claim 1 , wherein the coolant control valve further comprises:
a first outer sealing attached to the first outer valve for inhibiting leakage of coolant between the first coolant line and the coolant inflow chamber,
a second outer sealing attached to the first outer valve for inhibiting leakage of coolant between the first coolant line and the second coolant line, and
a third outer sealing attached to the second outer valve for inhibiting leakage of coolant between the third coolant line and the coolant inflow chamber.

5. The coolant control valve of claim 4 , wherein:
a first blocking plate is disposed between the coolant inflow chamber and the first coolant line;
a second blocking plate is disposed between the first coolant line and the second coolant line;
a first guide wall is formed to an end of the second blocking plate;
the first outer sealing is configured for selectively contacting the first blocking plate; and
the second outer sealing is configured for contacting the first guide wall.

6. The coolant control valve of claim 1 , wherein an oil cooler line for supplying coolant to an oil cooler is formed to the valve housing.

7. The coolant control valve of claim 1 , wherein the coolant control valve further comprises:
a fourth coolant line formed to the valve housing,
a second outer hole formed to the second outer valve and configured for communicating with the fourth coolant line, and
a second inner valve including a second inner tip protruded and a second inner hole configured for communicating with the coolant inflow chamber and selectively communicating with the second outer hole, and the second inner valve movably disposed in the second outer valve, and
wherein the cam further includes a fourth track for contacting the second inner tip and selectively pushing the second inner valve.

8. The coolant control valve of claim 7 , the coolant control valve further comprises:
a first outer valve spring for elastically supporting the first outer valve,
a first inner valve spring for elastically supporting the first inner valve,
a second outer valve spring for elastically supporting the second outer valve, and
a second inner valve spring for elastically supporting the second inner valve.

9. The coolant control valve of claim 7 , wherein the coolant control valve further comprising:
a first outer sealing attached to the first outer valve for inhibiting leakage of coolant between the first coolant line and the coolant inflow chamber,
a second outer sealing attached to the first outer valve for inhibiting leakage of coolant between the first coolant line and the second coolant line,
a third outer sealing attached to the second outer valve for inhibiting leakage of coolant between the third coolant line and the coolant inflow chamber, and
a fourth outer sealing attached to the second outer valve for inhibiting leakage of coolant between the fourth coolant line and the third coolant line.

10. The coolant control valve of claim 9 , wherein:
a first blocking plate is disposed between the coolant inflow chamber and the first coolant line;
a second blocking plate is disposed between the first coolant line and the second coolant line;
a first guide wall is formed to an end of the second blocking plate;
the first outer sealing is configured for selectively contacting the first blocking plate;
the second outer sealing is configured for contacting the first guide wall;
a third blocking plate is disposed between the coolant inflow chamber and the third coolant line;
a fourth blocking plate is disposed between the third coolant line and the fourth coolant line;
a second guide wall is formed to an end of the fourth blocking plate;
the third outer sealing is configured for selectively contacting the third blocking plate; and
the fourth outer sealing is configured for contacting the second guide wall.

11. A cooling system comprising:
a water pump;
an engine receiving coolant from the water pump and including an engine block and a cylinder head;
a valve housing including a coolant inflow chamber for communicating with the cylinder head, a first coolant line for communicating with the engine block, a second coolant line for communicating with at least one of heat exchange elements and a third coolant line for communicating with a radiator;
a first outer valve including a first outer tip protruded and a first outer hole configured for communicating with the second coolant line, and the first outer valve movably disposed in the valve housing for blocking the second coolant line and for selectively communicating the first coolant line with the coolant inflow chamber;
a first inner valve including a first inner tip protruded and a first inner hole configured for communicating with the coolant inflow chamber and selectively communicating with the first outer hole, and the first inner valve movably disposed in the first outer valve;
a second outer valve including a second outer tip protruded and the second outer valve movably disposed in the valve housing for selectively communicating the third coolant line with the coolant inflow chamber;
a cam including a first track for contacting the first outer tip and selectively pushing the first outer valve, a second track for contacting the first inner tip and selectively pushing the first inner valve and a third track for contacting the second outer tip and selectively pushing the second outer valve;
a drive motor configured for selectively rotating the cam;
a first coolant temperature sensor configured for measuring a first temperature of coolant passing through the cylinder head and outputting a first corresponding signal;
a second coolant temperature sensor configured for measu

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Lee Hyo Jo

Classifications

• F16K31/52483

  comprising a multiple-way sliding valve · CPC title

• F16K11/165

  with the rotating spindles parallel to the closure members · CPC title

• F16K3/26

  with fluid passages in the valve member · CPC title

• F01P2007/146

  using valves · CPC title

• F16K31/04

  using a motor · CPC title