Cooling system of an internal combustion engine

Patent metadata

Field	Value
Publication number	US-9803535-B2
Application number	US-201013508532-A
Country	US
Kind code	B2
Filing date	Nov 4, 2010
Priority date	Nov 6, 2009
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

The invention relates to the cooling system of an internal combustion engine ( 10 ) which comprises a combustion engine ( 12 ) having at least two cylinder banks ( 14, 16 ) and a number of exhaust gas exchangers ( 18, 20 ) identical to the number of cylinder banks, as well as a retarder connection, wherein the cooling system can be flown through by a fluid serving as coolant in a preferred flow direction and comprises a cooling system trunk section ( 30 ) and a number of cooling system branch sections identical to the number of the cylinder banks ( 14, 16 ) of the combustion engine ( 12 ), said cooling system branch sections comprising each a cylinder bank branch section ( 22, 24 ), an exhaust gas exchanger branch section ( 36, 38 ) and a combining branch section ( 44, 46 ). The invention further relates to an internal combustion engine ( 10 ) corresponding thereto.

First claim

The invention claimed is:

1. A cooling system for a combustion engine comprising a compression ignition (CI) motor with at least two cylinder banks, the cooling system comprising:
an identical number of exhaust gas heat exchangers as the number of cylinder banks, and a fluid serving as coolant flows through the cooling system in a preferred flow direction;
a primary section configured to be secured to a retarder; and
an identical number of branch sections as the number of cylinder banks of the CI motor, and the branch sections fluidly communicate with the primary section;
wherein each one of the branch sections has a cylinder bank branch section, a heat exchanger branch section, and a merging branch section,
wherein the primary section ends in the cylinder bank branch sections, and each one of the cylinder bank branch sections has a branch section outlet that is in contact with fluid through a designated cylinder bank inlet;
wherein each one of the heat exchanger branch sections comprises a branch section inlet of the exhaust gas heat exchanger and a branch section outlet of the exhaust gas heat exchanger, and each one of the heat exchanger branch sections is in contact with fluid through a designated cylinder bank outlet and each one designated exhaust gas heat exchanger inlet;
wherein each one of the merging branch sections has a merging branch section inlet, and each one of the merging branch sections is in contact with fluid by an exhaust gas heat exchanger outlet, and each one of the merging branch sections is furthermore in contact with fluid through the primary section in the preferred flow direction downstream from the merging branch section inlets.

2. The cooling system according to claim 1 , wherein the cooling system's primary section comprises a hot-circuit radiator.

3. The cooling system according to claim 1 , wherein the cooling system's primary section and/or the cooling system's branch sections are designed in tube shape or as hoses.

4. The cooling system according to claim 1 , wherein the cooling system has an identical number of cooling system branch sections and motor heat exchangers for cooling the CI motor.

5. The cooling system according to claim 1 , wherein the cooling system has an identical number of exhaust gas heat exchangers as the number of cooling system's branch sections.

6. The cooling system according to claim 1 , wherein the cooling system has at least one oil heat exchanger.

7. The cooling system according to claim 1 , wherein the cooling system has a coolant pump.

8. The cooling system according to claim 1 , wherein the cooling system has at least one thermostat.

9. The cooling system according to claim 1 , further comprising the compression ignition motor.

10. The cooling system according to claim 1 , wherein the merging branch sections receive parallel partial coolant flows from the exhaust gas heat exchangers, and the merging branch sections combine the parallel partial coolant flows upstream of the primary section such that an extraction of coolant from the primary section evenly affects the partial coolant flows of the exhaust gas heat exchangers.

11. A combustion engine, comprising:
a compression ignition (CI) motor with at least two cylinder banks and with an identical number of cylinder banks and exhaust gas heat exchangers; and
a cooling system through which a fluid flows in a preferred flow direction, the cooling system including:
a primary section configured to be secured to a retarder; and
an identical number of branch sections as the number of cylinder banks of the CI motor, and the branch sections fluidly communicate with the primary section;
wherein each one of the branch sections has a cylinder bank branch section, a heat exchanger branch section, and a merging branch section,
wherein the primary section ends in the cylinder bank branch sections, and each one of the cylinder bank branch sections has a branch section outlet that is in contact with fluid through a designated cylinder bank inlet;
wherein each one of the heat exchanger branch sections comprises a branch section inlet of the exhaust gas heat exchanger and a branch section outlet of the exhaust gas heat exchanger, and each one of the heat exchanger branch sections is in contact with fluid through a designated cylinder bank outlet and each one designated exhaust gas heat exchanger inlet;
wherein each one of the merging branch sections has a merging branch section inlet, and each one of the merging branch sections is in contact with fluid by an exhaust gas heat exchanger outlet, and each one of the merging branch sections is furthermore in contact with fluid through the primary section in the preferred flow direction downstream from the merging branch section inlets.

12. The combustion engine according to claim 11 , wherein the combustion engine has motor heat exchangers that are integral components of the CI motor.

13. The combustion engine according to claim 11 , wherein the combustion engine includes the retarder.

14. The combustion engine according to claim 11 , wherein the combustion engine has a hot-circuit radiator.

15. The combustion engine according to claim 11 , wherein the combustion engine has a charge air cooler, which serves to cool the cylinder banks.

16. A cooling system for a combustion engine comprising a compression ignition motor, the cooling system comprising:
a primary section configured to be secured to at least one retarder;
a plurality of branch sections disposed in parallel and fluidly communicating with the primary section, such that a fluid serving as coolant flows through the cooling system in a preferred flow direction wherein the number of branch sections is identical to a number of cylinder banks of the compression ignition motor; and
an identical number of exhaust gas heat exchangers as the number of cylinder banks, and each one of the exhaust gas heat exchangers is disposed in a corresponding one of the branch sections;
wherein each one of the branch sections has a cylinder bank branch section, a heat exchanger branch section and a merging branch section;
wherein each one of the cylinder bank branch sections fluidly communicates with a cylinder bank inlet of a corresponding cylinder bank, such that each one of the cylinder bank branch sections is configured to direct fluid from the primary section to a corresponding one of the cylinder banks;
wherein each one of the heat exchanger branch sections includes a branch section outlet of the cylinder bank and a branch section inlet of the exhaust as heat exchanger, such that each one of the heat exchanger branch selections is configured to direct fluid from a corresponding cylinder bank to a corresponding exhaust as heat exchanger;
wherein each one of the merging branch sections fluidly communicates with an exhaust as heat exchanger outlet and the primary section, such that each one of the merging branch sections is configured to direct a parallel partial coolant flow flowing through the corresponding exhaust as heat exchanger to the primary section; and
wherein the merging branch sections combines each of the parallel partial coolant flows upstream of the primary section such that an extraction of coolant from the primary section evenly affects the partial coolant flows of the exhaust as heat exchangers.

17. The cooling system according to claim 16 , further comprising the compression ignition motor.

Assignees

• Henssler Felix
• Reitz Jörg Andre
• Mtu Friedrichshafen Gmbh

Inventors

• Henssler Felix
• Reitz Jörg Andre

Classifications

• F01P3/12 Primary

  Arrangements for cooling other engine or machine parts · CPC title

• F02M26/24

  with two or more coolers · CPC title

• F01N3/043

  without contact between liquid and exhaust gases · CPC title

• F01P2060/06

  Retarder · CPC title

• F01P2060/16

  Outlet manifold · CPC title