DE102020201350A1 - Assembly for a cooling system of a motor vehicle with a heat exchanger, a control valve and an actuating device - Google Patents

Abstract

An assembly (12) for a cooling system (1) of a motor vehicle comprises a heat exchanger (13), a control valve (16) and an actuating device (18). This assembly (12) is characterized by a first connection piece (24) and a second connection piece (25), which are fluidly connected to a first heat exchange side of the heat exchanger (13), and - a third connection piece (26) which is fluidly connected to a second heat exchange side of the heat exchanger (13) is connected, and a connecting line (22) which fluidly connects the second heat exchange side of the heat exchanger (13) to a first control opening (23) of the control valve (16).

Description

The invention relates to an assembly for a cooling system of a motor vehicle with a heat exchanger, a control valve and an actuating device. The invention further relates to a cooling system with such an assembly and a motor vehicle with a corresponding cooling system.

The cooling system according to the invention can in particular be a high-temperature subsystem in which a coolant can circulate, for which at least temporarily a relatively high coolant operating temperature is provided, as well as a low-temperature subsystem in which a coolant can circulate, for which at least temporarily one in comparison to the coolant of the high-temperature subsystem is provided with a relatively low coolant operating temperature.

In the following, “high temperature” is also abbreviated to HT and “low temperature” to NT.

Such a cooling system is, for example, from WO 2008/080872 A1 famous. In this cooling system, an internal combustion engine, an HT coolant cooler, a continuous braking device (“retarder”) and an HT coolant pump are integrated into the HT subsystem. The LT subsystem comprises a charge air cooler, a LT coolant cooler and a LT coolant pump. The HT subsystem and the LT subsystem can be fluidically coupled by means of a control valve, if necessary, in order to allow the charge air cooler to be warmed up by relatively hot coolant that comes from the HT subsystem.

The invention was based on the object, in a cooling system that comprises an HT subsystem and an LT subsystem, to couple these subsystems in an advantageous manner in such a way that, if necessary, a heat transfer between the coolant flowing in the HT subsystem and the Coolant that flows in the LT subsystem is possible.

This object is achieved by means of a cooling system according to claim 8. An assembly that advantageously enables coupling between the subsystems of such a cooling system is the subject matter of claim 1. Advantageous embodiments of the assembly according to the invention and the cooling system according to the invention are the subjects of the further claims and / or result from the following description of the invention.

• - einen ersten Anschlussstutzen und einen zweiten Anschlussstutzen, die fluidleitend mit einer ersten Wärmetauschseite des Wärmetauschers verbunden sind,
• - einen dritten Anschlussstutzen, der fluidleitend mit einer zweiten Wärmetauschseite des Wärmetauschers verbunden ist, und
• - eine Verbindungsleitung, die die zweite Wärmetauschseite des Wärmetauschers fluidleitend mit einer ersten Steueröffnung des Steuerventils verbindet.

According to the invention, an assembly for a cooling system of a motor vehicle is provided which comprises at least one heat exchanger, a control valve and an actuating device. The assembly also includes

• - A first connection piece and a second connection piece, which are fluidly connected to a first heat exchange side of the heat exchanger,
• - A third connection piece which is fluidly connected to a second heat exchange side of the heat exchanger, and
• - A connecting line which connects the second heat exchange side of the heat exchanger in a fluid-conducting manner to a first control opening of the control valve.

An “assembly” is understood to be a coherent object that can be handled as a unit and consists of at least the named components. It can preferably be provided that all of the associated components are rigidly connected to one another.

An assembly according to the invention makes it possible in an advantageous manner, particularly easy to handle and thus advantageously assemble and with a relatively small space requirement, to implement a coupling between an HT subsystem of a cooling system according to the invention, which can preferably also integrate an internal combustion engine, and an NT subsystem, whereby By means of the heat exchanger of the assembly, a heat transfer between an HT coolant flowing in the HT subsystem and an LT coolant flowing in the LT subsystem is possible without the different coolants of these subsystems being exchanged or mixed.

• - einen vierten Anschlussstutzen, der fluidleitend mit einer zweiten Steueröffnung des Steuerventils verbunden ist, und
• - einen fünften Anschlussstutzen, der fluidleitend mit einer dritten Steueröffnung des Steuerventils verbunden ist,

umfassen, wobei das Steuerventil mittels der Stellvorrichtung zumindest in

• - eine erste Ventilstellung bringbar ist, in der eine Fluidströmung von der zweiten Steueröffnung in die dritte Steueröffnung freigegeben ist und eine Fluidströmung durch die erste Steueröffnung unterbunden ist; und
• - eine zweite Ventilstellung bringbar ist, in der eine Fluidströmung von der ersten Steueröffnung in die dritte Steueröffnung freigegeben ist und eine Fluidströmung durch die zweite Steueröffnung unterbunden ist.

According to a preferred embodiment of an assembly according to the invention, this can also

• - A fourth connection piece which is fluidly connected to a second control opening of the control valve, and
• - A fifth connection piece which is fluidly connected to a third control opening of the control valve,

include, wherein the control valve by means of the adjusting device at least in

• a first valve position can be brought into which a fluid flow from the second control opening into the third control opening is released and a fluid flow through the first control opening is prevented; and
• - a second valve position can be brought into which a fluid flow from the first control opening into the third control opening is released and a fluid flow through the second control opening is prevented.

As a result, an advantageous flow through the cooling system can be realized by means of a relatively small number of valve positions and in particular by means of only these two valve positions. However, additional intermediate valve positions can also be advantageously provided.

According to a preferred embodiment of an assembly according to the invention, it can comprise a bypass line which connects the third connection piece in a fluid-conducting manner to a fourth control opening of the control valve. According to an advantageous development of such an assembly according to the invention, it can then be provided that the control valve can also be brought into a third valve position by means of the actuating device, in which a fluid flow from the fourth control opening into the third control opening is enabled and a fluid flow through the first control opening and is preferably also prevented by the second control opening. This makes it possible to provide a heat transfer between the coolants of the HT subsystem and the LT subsystem only as required, in which the LT coolant can be used to prevent the LT coolant from flowing through the heat exchanger. According to a further preferred development of an assembly according to the invention with a bypass line, it can also be provided that in the first valve position and / or in the second valve position of the control valve a fluid flow is also prevented through the fourth control opening. In this way, too, an advantageous control of coolant flows in a corresponding cooling system according to the invention can be implemented by means of the assembly.

• - des ersten Anschlussstutzens (vorzugsweise unmittelbar) stromab eines in das HT-Teilsystem integrierten AGR-Kühlers und/oder
• - des zweiten Anschlussstutzens (vorzugsweise unmittelbar) stromauf einer in das HT-Teilsystem integrierten HT-Kühlmittelpumpe und/oder
• - des dritten Anschlussstutzens (vorzugsweise unmittelbar) stromab einer in das NT-Teilsystem integrierten NT-Kühlmittelpumpe und/oder
• - des vierten Anschlussstutzens (vorzugsweise unmittelbar) stromab eines in das NT-Teilsystem integrierten NT-Kühlmittelkühlers und/oder
• - des fünften Anschlussstutzens (vorzugsweise unmittelbar) stromauf eines in das NT-Teilsystem integrierten Ladeluftkühlers vorgesehen sein.

According to a preferred embodiment of a cooling system according to the invention, which also enables an advantageous control of coolant flows in the cooling system, it can be provided that the first connection piece and the second connection piece are integrated into the HT subsystem and at least the third, preferably also the fourth and fifth Connection pieces (if provided) are integrated into the NT subsystem. In this case, in particular, an arrangement

• - The first connection piece (preferably directly) downstream of an EGR cooler integrated into the HT subsystem and / or
• - The second connection piece (preferably directly) upstream of an HT coolant pump integrated into the HT subsystem and / or
• - The third connection piece (preferably directly) downstream of an LT coolant pump integrated into the LT subsystem and / or
• - The fourth connection piece (preferably directly) downstream of an LT coolant cooler integrated into the LT subsystem and / or
• - The fifth connection piece (preferably directly) can be provided upstream of a charge air cooler integrated into the LT subsystem.

According to the invention, a “coolant cooler” is understood to mean a heat exchanger in which a heat transfer from coolant to ambient air can be implemented with the primary or exclusive purpose of cooling the coolant.

It can preferably be provided that an assembly according to the invention has an optionally multi-part main housing which accommodates the heat exchanger and / or the control valve and / or the actuating device, preferably all of these components, and which ensures the structural integrity or structural cohesion of these components. It can furthermore preferably be provided that the main housing has the first connection stub and / or the second connection stub and / or the third connection stub and / or the fourth connection stub (if present) and / or the fifth connection stub (if present) and / or the connecting line and / or the bypass line (if present), particularly preferably all of the fluid-conducting elements provided, forms (integrally). Compared to a separate design of these fluid-conducting elements, this enables the assembly of the assembly to be assembled as simply and quickly as possible, because the individual connection of these fluid-conducting elements to other elements / components of the assembly can be dispensed with.

According to one embodiment of an assembly according to the invention, it can be provided that the heat exchanger and / or the control valve and / or the actuating device (each) have an individual housing, the individual housing or housings with one another and / or (in particular directly) with the overall housing (if present) is / are connected. This can have advantages with regard to the manufacture of these components and also with regard to the assembly of the assembly. As an alternative to this, however, the overall housing can also serve as a housing for a heat exchanger core, ie for all of the elements of the heat exchanger through which the various fluids / coolants can flow and which are in contact with one another for heat exchange. Likewise, the overall housing can form a control chamber of the control valve, in which a control device by means of the actuating device adjustable, ie in particular displaceable and / or rotatable valve body is arranged. In addition, the overall housing can serve to support a drive element of the actuating device, in particular an electric servo motor and possibly also a transmission.

The invention also relates to a motor vehicle, in particular a wheel-based and not rail-bound motor vehicle (preferably a car or a truck), with a cooling system according to the invention. The internal combustion engine, which is preferably provided and then integrated into the HT subsystem of the cooling system, can be provided in particular for (direct or indirect) provision of drive power for the motor vehicle.

• 1: ein erfindungsgemäßes Kühlsystem;
• 2: eine erfindungsgemäße Baugruppe in einer Ansicht von vorne; und
• 3: die Baugruppe in einer Ansicht von hinten.

The invention is explained in more detail below with reference to an exemplary embodiment shown in the drawings. In the drawings shows:

• 1 : a cooling system according to the invention;
• 2 : an assembly according to the invention in a view from the front; and
• 3 : the assembly in a view from the rear.

the 1 shows a cooling system according to the invention 1 for a motor vehicle. The cooling system includes an HT subsystem 2 as well as an NT subsystem 3 , in each of which coolant by means of at least one coolant pump 4th . is fundable. Here are the subsystems 2 , 3 of the cooling system 1 fluidically separated from one another, ie there is no, not even temporarily, mixing of the in the HT subsystem 2 flowing HT coolant and in the LT subsystem 3 flowing LT coolant as a result of a corresponding connection of cooling circuits of the two subsystems 2 , 3 intended. However, that does not preclude the two subsystems 2 , 3 fluidically with a common expansion tank (not shown) of the cooling system 1 are connected.

In the HT subsystem 2 is next to a first HT coolant pump that can be driven by an electric motor 4th another heating heat exchanger 7th , ie a heat exchanger, by means of which, if necessary, ambient air, which is provided for temperature control of an interior of the motor vehicle, can be heated, integrated. The HT subsystem also includes 2 an EGR cooler 8th , ie a heat exchanger, by means of its exhaust gas, which, if necessary, flows from an exhaust gas line (not shown) into a fresh gas line (not shown) of an internal combustion engine 9 is recycled, can be cooled. The internal combustion engine 9 and specifically a cylinder head 10 and a crankcase 11 of the internal combustion engine 9 are also in the HT subsystem 2 integrated. This also applies to a second HT coolant pump 5 mechanically, ie from the internal combustion engine 9 can be driven, as well as for a first heat exchange side of a heat exchanger 13th an assembly according to the invention 12th and for a coolant distribution module 14th . By means of the coolant distribution module 14th a needs-based distribution of the HT coolant to flow through those components of the HT subsystem 2 that have a temperature control functionality, ie of the internal combustion engine 9 , the heating system heat exchanger 7th , the EGR cooler 8th and the heat exchanger 13th the assembly 12th , is feasible.

The HT subsystem 2 can furthermore have additional components, not shown, in particular also those with a temperature control functionality, such as an HT coolant cooler.

In the NT subsystem 3 is next to the LT coolant pump 6th another LT coolant cooler 15th , a second heat exchange side of the heat exchanger 13th the assembly 12th , a control valve 16 the assembly 12th as well as an intercooler 17th integrated. By means of the intercooler 17th fresh gas can be supplied to the internal combustion engine via the fresh gas line 9 is supplied and which has been compressed by means of a compressor integrated in the fresh gas line, be cooled if necessary.

A more detailed representation of an assembly according to the invention 12th that in a cooling system 1 according to the 1 can be used is in the 2 and 3 shown. According to this embodiment, each of the components comprises the assembly 12th , ie the heat exchanger 13th , the control valve 16 and one for adjusting the control valve 16 provided adjusting device based on an electric servomotor (not visible) 18th , each with a single housing 19th , 20th , 21 , with this single housing 19th , 20th , 21 are rigidly connected to each other. It is between the individual housing 21 the adjusting device 18th and the single housing 20th of the control valve 16 a direct connection is provided while the single housing 20th of the control valve 16 indirectly via a connecting line designed as a rigid pipeline 22nd the assembly 12th with the single housing 19th of the heat exchanger 13th connected is. The connecting line 22nd connects the second heat exchange side of the heat exchanger 13th fluid-conducting with a first control opening 23 of the control valve 16 .

The single housing 19th of the heat exchanger 13th forms a first connection piece 24 and a second connection piece 25th by means of which the integration of the first heat exchange side of the heat exchanger 13th into the HT subsystem 2 a cooling system 1 according to, for example, the 1 is possible. The first connection piece 24 is by the cooling system 1 according to the 1 immediately downstream of the EGR cooler 8th and the second connection piece 25th is upstream of the two HT coolant pumps 4th , 5 arranged. The first heat exchange side of the heat exchanger 13th is consequently between the EGR cooler 8th on the one hand and the HT coolant pumps 4th , 5 into the HT subsystem 2 integrated that HT coolant that is supplied by at least one of the HT coolant pumps 4th , 5 is promoted, first the EGR cooler 8th and only then the first heat exchange side of the heat exchanger 13th flows through. With regard to a provided by a corresponding operation of at least one of the HT coolant pumps 4th , 5 achievable flow direction for the HT coolant in a corresponding cooling circuit of the HT subsystem 2 represents the first connection nozzle 24 accordingly an inlet port and the second connection port 25th an outlet connection for the second heat exchange side of the heat exchanger 13th represent.

The single housing 19th of the heat exchanger 13th the assembly 12th also forms a third connection piece 26th from that of the cooling system 1 according to the 1 immediately downstream of the LT coolant pump 6th is arranged.

The single housing 20th of the control valve 16 forms a fourth connection piece 27 from, the fluid-conducting with a second control opening 28 of the control valve 16 is connected and that of the cooling system 1 according to the 1 immediately downstream of the LT coolant cooler 15th into the NT subsystem 3 is integrated. Furthermore, the single housing forms 20th of the control valve 16 a fifth connection piece 29 from, the fluid-conducting with a third control opening 30th of the control valve 16 is connected and the upstream of the intercooler 17th is arranged.

Depending on one by means of the adjusting device 18th set valve position of the control valve 16 can LT coolant that is produced by means of the LT coolant pump 6th is promoted, initially through the LT coolant cooler 15th and / or the second heat exchange side of the heat exchanger 13th and / or through a bypass line 31 and then through the intercooler 17th be guided. The third connection piece is accordingly 26th an inlet connection for the second heat exchange side of the heat exchanger 13th as well as for the bypass line 31 and the one with the fourth connection piece 27 second control opening connected in a fluid-conducting manner 28 provides a first inlet of the control valve 16 A second inlet of the control valve 16 is from the fluid-conducting with the connecting line 22nd connected first control opening 23 educated. The connecting line 22nd is also with an outlet on the second heat exchange side of the heat exchanger 13th connected. One with the bypass line 31 fourth control opening connected in a fluid-conducting manner 32 of the control valve 16 provides a third inlet of the control valve 16 The one with the fifth connection nozzle 29 third control opening connected in a fluid-conducting manner 30th however, represents an outlet of the control valve 16 represent.

The control valve 16 can by means of the adjusting device 18th be brought into a first valve position in which a flow of the LT coolant from the second control opening 28 into the third control opening 30th is released and a flow of the LT coolant via the first control opening 23 and also the fourth tax opening 32 is prevented. That from the LT coolant pump 6th LT coolant delivered is then consequently only in an additional LT coolant cooler 15th and the intercooler 17th comprehensive cycle promoted.

The control valve 16 can by means of the adjusting device 18th can also be brought into a second valve position in which a flow of the LT coolant from the first control opening 23 into the third control opening 28 is released and a flow of the LT coolant via the second control opening 28 and also the fourth tax opening 32 is prevented. That from the LT coolant pump 6th LT coolant delivered is then consequently only the second heat exchange side of the heat exchanger 13th and the intercooler 17th comprehensive cycle promoted.

And finally, the control valve can 16 by means of the adjusting device 18th be brought into a third valve position, in which a flow of the LT coolant from the fourth control opening 32 into the third control opening 30th is released and a flow of the LT coolant through the first control opening 23 and the second control port 28 is prevented. That from the LT coolant pump 6th The LT coolant that is conveyed is then consequently only used in an additional bypass line 31 and the intercooler 17th comprehensive cycle promoted.

In principle, any number of intermediate positions between the first and the second valve position and / or between the second and the third valve position and / or between the first and the third valve position can be provided, so that any distribution of coolant for a simultaneous flow through the LT coolant cooler 15th and / or the heat exchanger 13th and / or the bypass 31 is possible.

The connecting pieces 24 , 25th , 26th , 27 , 29 the in the 2 and 3 assembly shown 12th are designed as simple plug-in nozzles, on each of which a hose line of a cooling system according to, for example, the 1 is attachable. For a secure connection between the plug-in socket and the hose lines, fixation by means of a simple hose clamp or spring band clamp can also be provided.

According to an alternative embodiment of a cooling system according to FIG 1 as well as an assembly according to the 2 and 3 it can be provided that the bypass line 31 is not provided. Accordingly, the control valve would 16 the assembly 12th the fourth tax opening 32 do not have and also not be adjustable in the third valve position. With such a cooling system 1 As a result, there is no longer any possibility of supplying coolant using the LT coolant pump 6th in a circuit that only includes the intercooler 17th as a component with temperature control functionality includes to promote.

According to a further alternative embodiment of an assembly according to FIGS 2 and 3 it can be provided that the positioning of the first connecting piece 24 and the third connection piece 26th are interchanged without affecting the assignment of these connecting pieces 24 , 26th to the components of a cooling system according to 1 would change something. As a result, a diagonal or cross flow through the heat exchanger, which is advantageous with regard to the heat transfer efficiency, can be achieved 13th can be realized by means of the HT coolant and the LT coolant.

List of reference symbols

1

Cooling system

2

HT subsystem of the cooling system

3

LT subsystem of the cooling system

4th

first HT coolant pump

5

second HT coolant pump

6th

LT coolant pump

7th

Heating heat exchanger

8th

EGR cooler

9

Internal combustion engine

10

Cylinder head of the internal combustion engine

11

Internal combustion engine crankcase

12th

module

13th

Heat exchanger of the assembly

14th

Coolant distribution module

15th

LT coolant cooler

16

Control valve of the assembly

17th

Intercooler

18th

Adjusting device

19th

Single housing of the heat exchanger

20th

Single housing of the control valve

21

Individual housing of the actuating device

22nd

Connection line of the assembly

23

first control opening of the control valve

24

first connection piece of the assembly

25th

second connection piece of the assembly

26th

third connection piece of the assembly

27

fourth connection piece of the assembly

28

second control opening of the control valve

29

fifth connection piece of the assembly

30th

third control opening of the control valve

31

Bypass line

32

fourth control opening of the control valve

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• WO 2008/080872 A1 [0004]

Claims (10)

Assembly (12) for a cooling system (1) of a motor vehicle with a heat exchanger (13), a control valve (16) and an adjusting device (18), characterized by - a first connection piece (24) and a second connection piece (25), which conduct fluid are connected to a first heat exchange side of the heat exchanger (13), and - a third connection piece (26) which is fluidly connected to a second heat exchange side of the heat exchanger (13), and - a connecting line (22) which connects the second heat exchange side of the heat exchanger ( 13) connects fluidly to a first control opening (23) of the control valve (16). Assembly (12) according to Claim 1 , characterized by - a fourth connection piece (27) which is fluidly connected to a second control opening (28) of the control valve (16), and - a fifth connection piece (29) which is fluidly connected to a third control opening (30) of the control valve (16) ), wherein the control valve (16) can be brought into a first valve position by means of the adjusting device (18), in which a fluid flow from the second control opening (28) into the third control opening (30) is released and a fluid flow through the first Control opening (23) is blocked; and a second valve position can be brought into which a fluid flow from the first control opening (23) into the third control opening (30) is released and a fluid flow through the second control opening (28) is prevented. Assembly (12) according to Claim 1 or 2 , characterized by a bypass line (31) which connects the third connection piece (26) in a fluid-conducting manner to a fourth control opening (32) of the control valve (16). Assembly (12) according to Claim 2 and Claim 3 , characterized in that the control valve (16) can be brought into a third valve position by means of the adjusting device (18), in which a fluid flow from the fourth control opening (32) into the third control opening (30) is released and a fluid flow through the first control opening (23) is prevented. Assembly (12) according to one of the preceding claims, characterized by a main housing accommodating the heat exchanger (13) and / or the control valve (16) and / or the adjusting device (18). Assembly (12) according to Claim 5 , characterized in that the main housing the first connection piece (24) and / or the second connection piece (25) and / or the third connection piece (26) and / or the fourth connection piece (27) and / or the fifth connection piece (29) and / or the connecting line (22) and / or the bypass line (31) forms. Assembly (12) according to one of the preceding claims, characterized in that the heat exchanger (13) and / or the control valve (16) and / or the adjusting device (18) have a single housing (19; 20; 21), wherein the one or the Individual housing (19; 20; 21) is / are connected to one another and / or to the overall housing. Cooling system (1) for a motor vehicle with a high-temperature subsystem (2) and with a low-temperature subsystem (3), characterized by an assembly (12) according to one of the preceding claims, wherein the first connection piece (24) and the second connection piece ( 25) are integrated into the high-temperature subsystem (2) and at least the third connection piece (26) is integrated into the low-temperature subsystem (3). Cooling system (1) according to Claim 8 , characterized by the arrangement - the first connection stub (24) downstream of an EGR cooler (8) integrated in the high-temperature subsystem (2) and / or - the second connection stub (25) upstream of an integrated in the high-temperature subsystem (2) High-temperature coolant pump (4, 5) and / or the third connection piece (26) downstream of a low-temperature coolant pump (6) integrated into the low-temperature subsystem (3). Cooling system (1) according to Claim 9 , characterized in that - the fourth connection piece (27) is integrated downstream of a low-temperature coolant cooler (15) in the low-temperature subsystem (3) and / or - the fifth connection piece (29) upstream of a charge air cooler (17) in the low-temperature Subsystem (3) is integrated.

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