Engine system having coolant control valve

Patent metadata

Field	Value
Publication number	US-2016123218-A1
Application number	US-201514737285-A
Country	US
Kind code	A1
Filing date	Jun 11, 2015
Priority date	Oct 29, 2014
Publication date	May 5, 2016
Grant date	—

Abstract

An engine system having a coolant control valve may include a cylinder head including an intake side head coolant jacket for cooling an intake side thereof and an exhaust side head coolant jacket for cooling an exhaust side thereof formed in the cylinder head, a cylinder block arranged on a lower side of the cylinder head and having an intake side block coolant jacket for cooling an intake side of the cylinder block and an exhaust side block coolant jacket for cooling an exhaust side cylinder block formed therein, and a coolant control valve arranged for independently controlling coolant flowing through the intake side head coolant jacket, the exhaust side head coolant jacket, the intake side block coolant jacket and the exhaust side block coolant jacket.

First claim

What is claimed is:

1 . An engine system having a coolant control valve, the engine system comprising:
a cylinder head including an intake side head coolant jacket for cooling an intake side thereof and an exhaust side head coolant jacket for cooling an exhaust side thereof formed in the cylinder head; a cylinder block arranged on a lower side of the cylinder head and having an intake side block coolant jacket for cooling an intake side of the cylinder block and an exhaust side block coolant jacket for cooling an exhaust side cylinder block formed therein; and a coolant control valve arranged for independently controlling coolant flowing through the intake side head coolant jacket, the exhaust side head coolant jacket, the intake side block coolant jacket and the exhaust side block coolant jacket.

2 . The engine system of claim 1 , further comprising:
a coolant pump for pumping the coolant to flow through the cylinder head and the cylinder block, wherein the coolant pump is arranged on an inlet side through which the coolant is introduced into the cylinder head and the cylinder block, and wherein the coolant control valve is arranged on an outlet side through which the coolant is discharged from the cylinder head and the cylinder block.

3 . The engine system of claim 1 , wherein the coolant supplied to the coolant control valve through the cylinder block and the cylinder head is supplied to a heater core for cabin heating, an Exhaust Gas Recirculation (EGR) cooler for cooling recycling exhaust gas, a radiator for dispersing heat to the outside, and an oil cooler for controlling an oil temperature, and wherein the coolant control valve controls the coolant to be supplied to the heater core, the EGR cooler, the radiator, and the oil cooler, respectively and independently.

4 . The engine system of claim 1 , wherein the intake side head coolant jacket and the exhaust side head coolant jacket are configured to be separated from each other by a partition wall, and the intake side block coolant jacket and the exhaust side block coolant jacket are configured to be separated from each other by a partition wall.

5 . The engine system of claim 1 , wherein a temperature of the coolant passing through the cylinder head or the cylinder block is detected, and the coolant control valve is configured to be controlled according to the detected temperature of the coolant.

6 . The engine system of claim 5 , wherein the coolant control valve is configured to be controlled to block the coolant flowing through the intake side head coolant jacket, the exhaust side head coolant jacket, the intake side block coolant jacket, and the exhaust side block coolant jacket according to the detected temperature of the coolant.

7 . The engine system of claim 5 , wherein the coolant control valve is configured to be controlled such that the coolant flows through the intake side head coolant jacket, and the coolant flowing through the exhaust side head coolant jacket, the intake side block coolant jacket, and the exhaust side block coolant jacket is blocked according to the detected temperature of the coolant.

8 . The engine system of claim 5 , wherein the coolant control valve is configured to be controlled such that the coolant flows through the intake side head coolant jacket and the exhaust side head coolant jacket, and the coolant flowing through the intake side block coolant jacket and the exhaust side block coolant jacket is blocked according to the detected temperature of the coolant.

9 . The engine system of claim 5 , wherein the coolant control valve is configured to be controlled such that the coolant flows through the intake side head coolant jacket, the exhaust side head coolant jacket, and the intake side block coolant jacket, and the coolant flowing through the exhaust side block coolant jacket is blocked according to the detected temperature of the coolant.

10 . The engine system of claim 5 , wherein the coolant control valve is configured to be controlled such that the coolant flows through the intake side head coolant jacket, the exhaust side head coolant jacket, the intake side block coolant jacket, and the exhaust side block coolant jacket according to the detected temperature of the coolant.

11 . The engine system of claim 1 , wherein the coolant control valve includes:
a cylindrical valve of a pipe shape with at least one opened side, having a coolant passage in fluid communication from a center portion thereof to an outside surface thereof; a valve housing having an inside circumference matched to an outside circumference of the cylindrical valve, the cylindrical valve rotatably arranged in the valve housing, and the intake side head coolant jacket, the exhaust side head coolant jacket, the intake side block coolant jacket, and the exhaust side block coolant jacket connected to the valve housing; and a driving unit for rotating the cylindrical valve, wherein the coolant passage in the cylindrical valve is connected to the intake side head coolant jacket, the exhaust side head coolant jacket, the intake side block coolant jacket, or the exhaust side block coolant jacket depending on rotated positions of the coolant passage for making the coolant flow therethrough.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Lee Hyojo

Classifications

• F01P2007/146

  using valves · CPC title

• F01P7/165 Primary

  characterised by systems with two or more loops · CPC title

• F01P5/10

  Pumping liquid coolant; Arrangements of coolant pumps · CPC title

• F01P3/02

  Arrangements for cooling cylinders or cylinder heads · CPC title

• F01P2003/027

  Cooling cylinders and cylinder heads in parallel · CPC title