Vehicular thermal management system arrangement

Patent metadata

Field	Value
Publication number	US-11092064-B2
Application number	US-202016798594-A
Country	US
Kind code	B2
Filing date	Feb 24, 2020
Priority date	Feb 25, 2019
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

A vehicular thermal management system is provided that includes an internal combustion engine, a heat recoverer, an engine oil heat exchanger, a drivetrain oil heat exchanger, a coolant pump, and a coolant circuit that fluidly connects the preceding components. The drivetrain oil heat exchanger and the engine oil heat exchanger are arranged in series within the coolant circuit.

First claim

What is claimed is:

1. A vehicular thermal management system, comprising:
a coolant pump;
a first coolant branch having a first coolant control valve, a drivetrain oil heat exchanger, and an engine oil heat exchanger arranged in series;
a second coolant branch having an internal combustion engine and a second coolant control valve arranged in series, the second coolant control valve configured to control a temperature of the internal combustion engine via metering of a coolant flow from the internal combustion engine to a radiator; and,
the first coolant branch and the second coolant branch arranged parallel to each other and relative to the coolant pump;
a third coolant branch having:
a heat recoverer;
a first end extending from a first segment of the second coolant branch, the first segment extending from the coolant pump to the second coolant control valve in a direction of coolant flow; and,
a second end configured to merge with a second segment of the first coolant branch, the second segment extending from the coolant pump to the drivetrain oil heat exchanger in the direction of coolant flow.

2. The vehicular thermal management system of claim 1 , wherein the heat recoverer is an integrated exhaust manifold of a cylinder head of the internal combustion engine.

3. The vehicular thermal management system of claim 1 , wherein the heat recoverer is an exhaust gas recoverer.

4. The vehicular thermal management system of claim 1 , wherein the engine oil heat exchanger is arranged to receive an exiting coolant from the drivetrain oil heat exchanger, the exiting coolant passing through the drivetrain oil heat exchanger before passing through the internal combustion engine.

5. The vehicular thermal management system of claim 1 , wherein the drivetrain oil heat exchanger and the engine oil heat exchanger are arranged sequentially in a direction of coolant flow within the first coolant branch.

6. The vehicular thermal management system of claim 1 , wherein the first coolant control valve comprises a continuously variable single-lobe rotary valve body.

7. The vehicular thermal management system of claim 1 , wherein the second coolant control valve comprises a continuously variable multi-lobe rotary valve body.

8. A vehicular thermal management system, comprising:
a coolant circuit configured to fluidly connect,
an internal combustion engine;
a heat recoverer;
an engine oil heat exchanger;
a drivetrain oil heat exchanger;
a coolant pump; and,
a first coolant control valve arranged in a first segment of the coolant circuit; and,
the first coolant control valve configured to receive and variably adjust a cooled coolant flow from a radiator, defining a first exited coolant flow that, in the first segment of the coolant circuit, mixes with a second exited coolant flow of the heat recoverer, defining a mixed coolant flow that is delivered, without passing through the internal combustion engine, to one of the drivetrain oil heat exchanger to the engine oil heat exchanger within the first segment of the coolant circuit; and,
the list segment extending from the coolant pump to the drivetrain oil heat exchanger in a direction of coolant flow.

9. The vehicular thermal management system of claim 8 , further comprising a second coolant control valve configured to variably adjust coolant flow within the internal combustion engine, the second coolant control valve arranged in series with the internal combustion engine.

10. The vehicular thermal management system of claim 9 , wherein the first coolant control valve, drivetrain oil heat exchanger, and the engine oil heat exchanger are arranged in series, forming a first coolant branch.

11. The vehicular thermal management system of claim 9 , wherein the internal combustion and the second coolant control valve form a second coolant branch, and the first coolant branch and the second coolant branch are arranged in parallel relative to each other and the coolant pump.

12. A vehicular thermal management system, comprising:
a coolant circuit having:
a first coolant branch including a first coolant control valve, a drivetrain oil heat exchanger, and an engine oil heat exchanger arranged in series;
a second coolant branch including an internal combustion engine; and,
a third coolant branch including a heat recoverer, the third coolant branch configured to provide warming of the first coolant branch; and
the first coolant control valve is configured to control a temperature of a mixed coolant flow delivered to the drivetrain oil heat exchanger by variably adjusting a cooled coolant flow from a radiator, defining a first exited coolant flow, and
the first exited coolant flow is configured to mix with a second exited coolant flow of the second coolant branch, defining the mixed coolant flow.

13. The vehicular thermal management system of claim 12 , wherein the second coolant branch further comprises a second coolant control valve configured to variably adjust coolant flow within the internal combustion engine.

14. The vehicular thermal management system of claim 12 , wherein the first coolant control valve is configured to receive the second exited coolant flow of the second coolant branch and exit the mixed coolant flow.

15. The vehicular thermal management system of claim 12 , further comprising a fluid terminal configured to: i) receive the first exited coolant flow and the second exited coolant flow, and, ii) exit the mixed coolant flow.

16. The vehicular thermal management system of claim 8 , wherein the first coolant control valve is configured to receive the second exited coolant flow and exit the mixed coolant flow.

17. The vehicular thermal management system of claim 8 , further comprising a fluid terminal arranged downstream and in series with the first coolant control valve, the fluid terminal configured to: i) receive the first exited coolant flow and the second exited coolant flow, and ii) exit the mixed coolant flow.

18. The vehicular thermal management system of claim 12 , wherein the drivetrain oil heat exchanger is arranged upstream of the engine oil heat exchanger.

Assignees

• Schaeffler Technologies Ag

Inventors

• Murray Michael
• Brazas Peter

Classifications

• F01N5/02

  the devices using heat · CPC title

• F01P7/16

  by thermostatic control · CPC title

• F01P11/08

  Arrangements of lubricant coolers (in lubrication apparatus F01M) · CPC title

• Y02T10/12

  Improving ICE efficiencies · CPC title

• F01N3/046

  Exhaust manifolds with cooling jacket · CPC title