Auxiliary cooling system

Patent metadata

Field	Value
Publication number	US-10006415-B2
Application number	US-201514936338-A
Country	US
Kind code	B2
Filing date	Nov 9, 2015
Priority date	Jul 30, 2015
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

An auxiliary cooling system which is provided separately from an engine cooling passage in a vehicle provided with a turbo engine. The auxiliary cooling system includes a first line which connects a radiator and an intercooler to each other and on which an electric water pump is installed. A second line connects the intercooler and an intake manifold. A third line connects the intake manifold and the radiator, and a bypass valve selectively directly transfers cooling water, heated while passing through a turbine housing provided on a path of the third line, to the radiator or transfers the cooling water to the radiator via an engine block or a heater. Cooling water discharged from the intake manifold passes through an ETC (electronic throttle control) unit and thus reduces a temperature of intake air passing through the ETC unit.

First claim

What is claimed is:

1. An auxiliary cooling system installed separately from an engine cooling passage in a vehicle provided with a turbo engine, the auxiliary cooling system comprising:
a first line connecting a radiator and an intercooler to each other, with an electric water pump installed on the first line so that cooling water flows from the radiator toward the intercooler through the first line;
a second line connecting the intercooler and an intake manifold to each other and allowing the cooling water to flow therethrough;
a third line connecting the intake manifold and the radiator to each other and allowing the cooling water to flow therethrough; and
a bypass valve that selectively directs transferring cooling water, heated while passing through a turbine housing provided on a path of the third line, to the radiator or transferring the cooling water to the radiator via an engine block or a heater,
wherein cooling water discharged from the intake manifold passes through an ETC (electronic throttle control) unit and thus reduces a temperature of intake air passing through the ETC unit, and
wherein the third line supplies cooling water discharged from the intake manifold to an EGR (exhaust gas recirculation) cooler and supplies cooling water discharged from the EGR cooler to the turbine housing.

2. The auxiliary cooling system according to claim 1 , wherein the third line supplies cooling water discharged from the intake manifold to a compressor housing and supplies cooling water discharged from the compressor housing to the turbine housing.

3. The auxiliary cooling system according to claim 1 , wherein the third line supplies cooling water discharged from the intake manifold to a bearing housing and supplies cooling water discharged from the bearing housing to the turbine housing.

4. The auxiliary cooling system according to claim 1 , wherein the third line supplies cooling water discharged from the intake manifold to an EGR cooler, supplies cooling water discharged from the EGR cooler to a compressor housing, supplies cooling water discharged from the compressor housing to a bearing housing, and supplies cooling water discharged from the bearing housing to the turbine housing.

5. The auxiliary cooling system according to claim 1 , wherein the water pump starts operation 15 to 20 seconds after ignition of the vehicle is turned on and stops the operation 20 to 30 seconds after the ignition of the vehicle is turned off, and
the bypass valve selectively bypasses cooling water heated while passing through the turbine housing to the engine block or the heater, wherein until the engine block is heated after the ignition of the vehicle is turned on, the cooling water is bypassed to the engine block, or when the heater is operated, the heated cooling water is bypassed to the heater, and when the engine block is in a heated state and the heater is not in operation, the heated cooling water is directly transferred to the radiator without being bypassed.

6. An auxiliary cooling system installed separately from an engine cooling passage in a vehicle provided with a turbo engine, the auxiliary cooling system comprising:
a first line connecting a radiator and an intercooler to each other, with an electric water pump installed on the first line so that cooling water flows from the radiator toward the intercooler through the first line;
a second line connecting the intercooler and an intake manifold to each other and allowing the cooling water to flow therethrough;
a third line connecting the intake manifold and the radiator to each other and allowing the cooling water to flow therethrough; and
a bypass valve that selectively directs transferring cooling water, heated while passing through a turbine housing provided on a path of the third line, to the radiator or transferring the cooling water to the radiator via an engine block or a heater,
wherein cooling water discharged from the intake manifold passes through an ETC (electronic throttle control) unit and thus reduces a temperature of intake air passing through the ETC unit, and
wherein the third line supplies cooling water discharged from the intake manifold to an EGR cooler, supplies cooling water discharged from the EGR cooler to a compressor housing, supplies cooling water discharged from the compressor housing to a bearing housing, and supplies cooling water discharged from the bearing housing to the turbine housing.

7. An auxiliary cooling system installed separately from an engine cooling passage in a vehicle provided with a turbo engine, the auxiliary cooling system comprising:
a first line connecting a radiator and an intercooler to each other, with an electric water pump installed on the first line so that cooling water flows from the radiator toward the intercooler through the first line;
a second line connecting the intercooler and an intake manifold to each other and allowing the cooling water to flow therethrough;
a third line connecting the intake manifold and the radiator to each other and allowing the cooling water to flow therethrough; and
a bypass valve that selectively directs transferring cooling water, heated while passing through a turbine housing provided on a path of the third line, to the radiator or transferring the cooling water to the radiator via an engine block or a heater,
wherein cooling water discharged from the intake manifold passes through an ETC (electronic throttle control) unit and thus reduces a temperature of intake air passing through the ETC unit,
wherein the water pump starts operation 15 to 20 seconds after ignition of the vehicle is turned on and stops the operation 20 to 30 seconds after the ignition of the vehicle is turned off, and
the bypass valve selectively bypasses cooling water heated while passing through the turbine housing to the engine block or the heater, wherein until the engine block is heated after the ignition of the vehicle is turned on, the cooling water is bypassed to the engine block, or when the heater is operated, the heated cooling water is bypassed to the heater, and when the engine block is in a heated state and the heater is not in operation, the heated cooling water is directly transferred to the radiator without being bypassed.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Chu Dong Ho
• Park Jong Il
• Han Dong Hee

Classifications

• F01P7/14

  the coolant being liquid · CPC title

• F01P2050/22

  Motor-cars · CPC title

• F01P3/20 Primary

  Cooling circuits not specific to a single part of engine or machine (F01P3/22 takes precedence) · CPC title

• F01P2050/24

  Hybrid vehicles · CPC title

• F02B29/0406

  Layout of the intake air cooling or coolant circuit · CPC title