阅读说明：本技术 可集成的冷却介质输送模块及具有冷却介质输送模块的变速器 (Integrated cooling medium supply module and transmission with cooling medium supply module ) 是由 C·迈尔 M·格雷特勒 于 2018-05-15 设计创作，主要内容包括：一种用于输送及分配冷却介质的冷却介质输送模块(1),具有：壳体(4),其配备有抽吸管路接头(2)及多个消耗器接头(3a、3b、3c)；泵(6),其以输入端(5)连接到抽吸管路接头(2)；分配器阀(8),其连接到泵(6)的输出端(7)且配备用于将泵(6)的输出端(7)与消耗器接头(3a、3b、3c)选择性地连接；电动机(9),其在输送状态下驱动泵(6)；及电子控制单元(10),其控制地作用于电动机(9),泵(6)、电动机(9)、控制单元(10)和分配器阀(8)一起布置在壳体(4)中并且控制单元(10)与分配器阀(8)作用连接为使得控制单元(10)在运行中控制分配器阀(8)。还涉及一种具有冷却介质输送模块(1)的用于机动车的变速器。(A cooling medium delivery module (1) for delivering and distributing a cooling medium, having: a housing (4) equipped with a suction line connector (2) and a plurality of consumer connectors (3a, 3b, 3 c); a pump (6) connected with an input (5) to the suction line connection (2); a distributor valve (8) connected to the output (7) of the pump (6) and equipped for selectively connecting the output (7) of the pump (6) with the consumer connection (3a, 3b, 3 c); a motor (9) that drives the pump (6) in the conveyance state; and an electronic control unit (10) which acts in a controlled manner on the electric motor (9), the pump (6), the electric motor (9), the control unit (10) and the distributor valve (8) being arranged together in the housing (4), and the control unit (10) being operatively connected to the distributor valve (8) in such a way that the control unit (10) controls the distributor valve (8) during operation. A transmission for a motor vehicle having a coolant conveying module (1) is also described.)

1. A cooling medium delivery module (1) for delivering and distributing a cooling medium, the cooling medium delivery module having:

-a housing (4) equipped with a suction line connection (2) and a plurality of consumer connections (3a, 3b, 3 c);

-a pump (6) connected with an input (5) to the suction line connection (2);

-a distributor valve (8) connected to the output (7) of the pump (6) and configured for selectively connecting the output (7) of the pump (6) with the consumer connection (3a, 3b, 3 c);

-an electric motor (9) which, in the delivery state, drives the pump (6); and

an electronic control unit (10) acting in control on the electric motor (9),

characterized in that the pump (6), the electric motor (9), the control unit (10) and the distributor valve (8) are jointly arranged in the housing (4), and the control unit (10) is operatively connected to the distributor valve (8) in such a way that the control unit (10) controls the distributor valve (8) during operation.

2. Cooling medium delivery module (1) according to claim 1, characterized in that the electronic control unit (10) has an interface (11) for a current supply and a CAN bus.

3. Cooling medium delivery module (1) according to claim 1 or 2, characterized in that the distributor valve (8) is configured as a solenoid valve.

4. Cooling medium delivery module (1) according to any one of claims 1 to 3, characterized in that the pump (6) and the distributor valve (8) are arranged on a common holding plate.

5. Cooling medium delivery module (1) according to one of claims 1 to 4, characterized in that there are at least two consumer connections (3a, 3b, 3c) with which the distributor valve (8) interacts for selective connection with the output (7) of the pump (6).

6. Cooling medium delivery module (1) according to one of claims 1 to 5, characterized in that there is an inflow connection (12) for connecting a heat exchanger (14) and a return connection (13).

7. Cooling medium delivery module (1) according to claim 6, characterized in that the inflow connection (12) and the return connection (13) are arranged in a line (16) connecting the pump (6) with the distributor valve (8).

8. The cooling medium delivery module (1) according to one of claims 1 to 7, characterized in that a drainage connection (18) is provided for connection to a storage device (19).

9. The coolant conveying module (1) according to claim 8, characterized in that the drainage connection (18) is arranged in a first line (16) connecting the pump (6) to the distributor valve (8) or in a second line (17) connected on the output side to the distributor valve (8).

10. A transmission for a motor vehicle, having a cooling medium delivery module (1) according to any one of claims 1 to 9.

Technical Field

The invention relates to a cooling medium supply module, i.e. a module which is provided for supplying a cooling medium and for distributing the cooling medium, preferably for use in a clutch, a transmission and/or an automatic transmission of a motor vehicle, having a housing which is equipped with a suction line connection and a plurality of consumer connections, a pump, a distributor valve, an electric motor and an electronic control unit; the pump is connected at an input end (fluidly) to a suction line fitting; said distributor valve being (fluidly) connected to the output of said pump and provided for selectively connecting the output of the pump with a consumer connection; the electric motor drives the pump in the delivery state, the electronic control unit acting on the electric motor in a controlled manner. The invention also relates to a transmission for a motor vehicle having such a cooling medium supply module.

Background

Cooling of various components of the drive train of a motor vehicle, such as the clutches or transmission stages of a transmission, is sufficiently known. DE 102016202656 a1, for example, discloses a clutch device with a valve for controlling the fluid flow to the respective friction element.

The prior art has therefore disclosed the possibility of realizing an electrified coolant supply. However, the embodiments known from the prior art generally have the following disadvantages: the embodiment described is relatively complex to construct. The components for the cooling medium supply, which are usually in the form of pumps, motors and their electronic control units and distributor valves, are arranged in a decentralized and relatively complex manner in relation to one another.

Disclosure of Invention

The object of the present invention is therefore to overcome the disadvantages known from the prior art and in particular to provide a solution which makes it possible to design the cooling medium supply particularly compactly.

This is solved according to the invention by the features of claim 1, wherein the pump, the electric motor, the control unit and the distributor valve are jointly arranged/integrated in the housing, and the control unit is operatively connected with the distributor valve in such a way that the control unit controls/acts controllably on the distributor valve during operation.

This results in a compact design of the cooling medium supply module. The coolant conveying module can be simply mounted in the drive train at the target position in as few assembly steps as possible.

Further advantageous embodiments are protected by the dependent claims and are set forth in more detail below.

It is also advantageous if the electronic control unit has interfaces for the current supply and the CAN bus. For this purpose, a further electronic connection for a corresponding plug connection is particularly preferably present in the housing for switching the interface. This enables a sufficient coupling of the control unit during operation.

Preferably, the distributor valve is configured as a (multi-) solenoid valve. In particular, the distributor valve is also designed as a conventional switching valve (preferably in the case of two consumer connections) or as a proportional valve/regulating valve (preferably in the case of three or more consumer connections).

In this case, it is also advantageous to integrate a valve final stage (Ventilendstufe) configured to energize the distributor valve into the electronic control unit.

It is also practical for one or more bypass diaphragms and/or anti-folds (negative) to be present on the distributor valve, preferably on the valve cartridge (Ventilschieber) of the distributor valve

) The bypass diaphragm and/or the anti-overlap portion are used to provide a basic cooling medium quantity independent of the valve position of the distributor valve.

It is also advantageous if sensors, preferably pressure and/or temperature sensors, are present in the line system coupling the pump and the distributor valve to one another. In this case, it is also preferred that a further additional valve, for example a pressure limiting valve as a safety device, is present in the line system. Thereby saving more installation space.

The assembly of the cooling medium supply module is further simplified if the pump and the distributor valve are arranged on a common holding plate.

It is particularly practical if there are at least two, further preferably at least three consumer connections with which the distributor valve interacts for selective connection/coupling to the output of the pump. In this case, the first consumer connection is preferably used to introduce a coolant component into the first clutch, the second consumer connection is preferably used to introduce a coolant component into the second clutch, and the third consumer connection is preferably used to introduce a coolant into the third clutch or into a gear stage of the transmission. Thereby further improving the cooling performance.

The heat exchanger can be connected in a simple manner if there are inflow connections (vorlaunfanschluss) for connecting the heat exchanger/cooler and return connections, which are preferably mounted/integrated in the housing.

In this respect, it is particularly practical for the inflow connection and the return connection to be arranged in/along a line (line system) connecting the pump to the distributor valve.

It is also advantageous that a cooler/heat exchanger bypass valve is present (in the housing).

The fluid medium delivery module can also be mounted directly on the storage device if a drainage connection is provided for connection to the storage device.

In this case, it is practical for the drainage connector to be connectable to the storage device with the filter connected in between. In this respect, the integration of the filter in the housing is particularly relevant.

The coolant line is further simplified if the drain connection is arranged in/along a first line (of the line system) connecting the pump to the distributor valve or in/along a second line connected on the output side to the distributor valve.

The invention also relates to a transmission for a motor vehicle, having a cooling medium supply module according to at least one of the above-described embodiments. The transmission is preferably configured as an automatic transmission. The transmission has at least one clutch, preferably two clutches and/or a gear stage, which are fluidically connected to a consumer connection of the cooling medium supply module.

In other words, according to the invention, an automatic transmission is realized with a preferably wet-running clutch which is supplied with a cooling medium, preferably cooling oil, by means of an electrically driven pump. In order to provide a compact cooling oil module (cooling medium transport module), it is proposed that: the electric motor, the electronic control unit for the electric motor and the distributor valve, the pump and the distributor valve are arranged in a common housing. In particular, a separate valve housing in which one or more valves are mounted separately is thereby dispensed with.

Drawings

The invention will now be explained in more detail below with reference to the drawings, in which different embodiments are shown.

It shows that:

fig. 1 is a side view of a cooling medium supply module according to the invention according to a first exemplary embodiment, in which the principle arrangement of a pump, a distributor valve, an electric motor acting on the pump and an electronic control unit which in turn interacts with the electric motor is visible,

figure 2 is a schematic circuit diagram of the cooling medium delivery module according to figure 1,

fig. 3 is a side view of a cooling medium delivery module according to the invention according to a second embodiment, wherein additionally a joint for a heat exchanger is present,

figure 4 is a schematic circuit diagram of the cooling medium delivery module according to figure 3,

fig. 5 is a side view of a cooling medium supply module according to the invention according to a third exemplary embodiment, wherein a drain connection for mounting on a storage device is additionally present,

figure 6 is a schematic circuit diagram of the cooling medium delivery module according to figure 5,

fig. 7 is a schematic circuit diagram of a cooling medium supply module according to a fourth exemplary embodiment, which differs from the third exemplary embodiment essentially in that the outlet connection is now integrated directly into the line connecting the pump to the distributor valve, and no longer into the line leading away from the distributor valve on the side facing away from the pump as in fig. 6,

FIG. 8 is a side view of a cooling medium supply module according to the invention according to a fifth exemplary embodiment, in which a filter coupled to a drainage connection is integrated in a housing, and

fig. 9 is a schematic circuit diagram of the cooling medium delivery module according to fig. 8.

The drawings are merely schematic in nature and are used only for the understanding of the present invention. Like elements are provided with like reference numerals. The different features of the different embodiments can also be freely combined with each other.

Detailed Description

A cooling medium delivery module 1 according to the present invention according to a first embodiment is explained with reference to fig. 1 and 2. The coolant supply module 1 serves to supply a coolant, preferably a hydraulic medium, for example cooling oil, during operation in the drive train and to distribute this coolant to the individual consumers. The cooling medium delivery module 1 is embodied to be installed in an automatic transmission. The cooling medium supply module 1 is designed for installation in a transmission housing of an automatic transmission. In an automatic transmission, the cooling medium supply module 1 is used to supply one or more clutches and/or one or more gear stages of the automatic transmission with a cooling medium.

As can be seen in principle from fig. 1, the cooling medium supply module 1 has a housing 4. A suction line connection 2 in the form of an inlet is formed in the housing 4. A suction line, for example a suction line, which leads to the tank and to which the pump 6 is connected with its input 5 (referred to below as the pump input 5), is preferably operatively connected to the suction line connection 2. The pump 6 is further fluidically (in this case hydraulically) connected with its output 7 (referred to below as pump output 7) via a line system 15 to the distributor valve 8.

The distributor valve 8 serves to selectively connect the pump output 7 to one of the plurality of consumer connections 3a to 3c, as is also shown in fig. 2. Thus, depending on the valve position of the distributor valve 8, one of the three consumer connections 3a, 3b, 3c is selectively connected to the pump output 7. During operation, a plurality of lines coupled to the consumers are connected to the consumer connections 3a, 3b, 3 c. In the first valve position, the distributor valve 8 (as can be seen clearly in fig. 2) connects the pump output 7 to the first consumer connection 3a (hydraulically). In the second valve position of the distributor valve 8, the pump output 7 is in fluid connection with the second consumer connection 3 b. In the third valve position, the pump output 7 is in fluid connection with the third consumer connection 3 c. As illustrated in fig. 2 with three points in this area, any number of consumer connections 3a, 3b, 3c can additionally be provided.

The distributor valve 8 is embodied as a solenoid valve in the form of a switching valve, so that the control unit 10 switches the distributor valve 8 back and forth between its valve positions by means of an electrical control signal. Alternatively, however, it is advantageous according to other embodiments to design the distributor valve 8 as a proportional valve, wherein in particular the regulation of the fluid flow to the three consumer connections 3a, 3b, 3c is facilitated.

Furthermore, it can be seen in fig. 1 that the delivery pump, which is designed as a pump 6, is coupled in a typical manner to an electric motor 9, which acts in a driven manner on the pump 6. For controlling the electric motor 9, an electronic control unit 10 is operatively connected to the electric motor. The pump 6, the motor 9, the control unit 10 and the distributor valve 8 are arranged together in the housing 4. The pump 6 and the distributor valve 8 are mounted on a common holding plate, which is not shown in detail here for the sake of clarity. The pump 6 and the distributor valve 8 are arranged in a housing part of the housing 4 itself.

The control unit 10 has an interface 11 which serves as a connection for the current supply and the CAN bus. The interface 11 has a plug connector, via which a current supply and/or a CAN bus cable CAN be connected. Grounding is also achieved through this cable. Furthermore, the control unit 10 comprises a circuit board fixed in the housing 4. In addition to the control commands for actuating the electric motor 9, the control unit 10 also receives control commands for actuating the distributor valve 8, i.e. for switching the distributor valve 8 between its valve positions, during operation.

Further embodiments are discussed below, wherein, for the sake of brevity, only the differences with respect to the first embodiment or the closest embodiment are discussed. The embodiments described below are constructed and function in principle according to the first embodiment.

In the second exemplary embodiment of fig. 3 and 4, a heat exchanger 14 in the form of a cooler can be connected to the first line 16 of the line system 15. The first line 16 is a line leading from the pump output 7 to the distributor valve 8. The coolant supply module 1/line 6 is equipped with an inflow connection 12 and a return connection 13. An inflow connection 12 and a return connection 13 are mounted in the housing 4. The inlet connection 12 is connected directly to the pump output 7, while the return connection 13 is connected directly to the distributor valve 8 on the input side. The first line 16 is interrupted in the disconnected state by the two connections 12 and 13 in the housing 4. In operation, however, the connections to the connections 12 and 13 are via the heat exchanger 14, which again constitutes a continuous line between the pump 6 and the distributor valve 8.

The third embodiment of fig. 5 and 6 differs from the second embodiment of fig. 3 and 4 again in that: in the housing 4, a drain connection 18 is additionally present. The drain connection 18 is arranged parallel to the other consumer connections 3a, 3b, 3 c. The outlet connection 18 is connected on the output side to the distributor valve 8 via a second line 17 in the form of an outlet line 21. The outlet connection 18 is therefore provided as a further connection to the distributor valve 8 via the second line 17. During operation, a return tank/reservoir 19 is connected to the drain connection 18 in a fluid/hydraulic manner (preferably with an external filter connected in between).

In addition, it can be seen in principle in connection with the fourth exemplary embodiment according to fig. 7 that, in contrast to the third exemplary embodiment, a drainage connection 18 is also connected to the input side of the distributor valve 8. In this fourth exemplary embodiment, the outlet connection 18 is connected via an outlet line 21 to a first line 16, which connects the pump output 7 to the distributor valve 8 during operation.

According to the fifth exemplary embodiment of fig. 8 and 9, it is also possible with reference to the fourth exemplary embodiment to provide the filter 20 directly in the housing 4. A filter 20 is arranged in the drain line 21 between the drain connection 18 and the first line 16. It should also be noted in this case that the storage device 19 can be used as an intermediate storage, from which, in addition, the transmission and/or the clutch actuators of the automatic transmission are supplied during operation.

In other words, according to the invention, the electric motor (electric motor 9), the electronic control unit (control unit 10) for actuating the electric motor 9 and the distributor valve 8, the pump 6 and the distributor valve 8 are connected in a common housing assembly (common housing 4). In one variant, connections (inlet and return connections 12, 13) to an external heat exchanger 14 are provided. In a further variant, an interface (drain connection 18) to the storage device 19 (optionally via an oil filter/filter 20) is provided.

The module 1 according to the invention is characterized by a compact and assembly-friendly construction. The module 1 constitutes an assembled module 1, to which the customer also requires only minimal hydraulic connection expenditure, for example for connecting pipes and electrical connectors.

The interfaces of the module 1 are a suction pipe connection (suction line connection 2) and a plurality of cooling oil connections (consumer connections 3a, 3b, 3c) for individual consumers and an electrical interface 11 comprising a current supply and a CAN bus. In other variants, connections 12, 13, 18 to or from the oil cooler (heat exchanger 14) and to the filter 20 or the reservoir 19 are also added. The pump 6 is supplied via the CAN bus by a superordinate control unit with setpoint values in the form of a voltage setpoint value, a rotational speed setpoint value or a volume flow setpoint value, and with the oil distribution required between the consumers. The pump 6 of the module 1 is driven by an integrated electric motor 9, which in turn is operated by an integrated control unit 10. The module 1 comprises at least one distributor valve 8 for distributing the supplied volume flow of cooling oil to a plurality of cooling oil consumers (e.g. clutches or gear sets). The actuation of the valve magnet (valve cartridge of the distributor valve 8) is effected by the control unit 10 of the pump electric motor 9. For this purpose, a valve output stage is integrated in the control unit 10. A basic cooling oil quantity for the consumer can be achieved independently of the valve position by a bypass diaphragm or an anti-overlap on the valve slide. It is furthermore conceivable to integrate one or more sensors, for example pressure or temperature sensors or other active or passive valves (for example a pressure limiting valve DBV as a safety device), in the compact valve housing (fig. 1 and 2).

The variant of the cooling module 1 has connections 12, 13 to and from a heat exchanger 14 as additional interfaces. These connections 12, 13 are located between the high-pressure side of the pump 6 (pump output 7) and the distributor valve 8, as seen in the hydraulic flow. For low temperatures and the accompanying high oil viscosity, a cooler bypass valve can be integrated in the module 1 (fig. 3 and 4).

Another variant has, in parallel with the connections 12, 13 for cooling the oil consumers, possibly also in parallel with the distributor valve 8, an interface to an oil filter 20, through which the filtered oil is discharged directly into the oil sump. In this way, it is also possible to increase the throughflow through the cooler 14 without forcibly conveying a greater volume flow through the clutch/double clutch/triple clutch (fig. 5, 6, 7).

In another variant, a part of the oil may be, but is not necessarily, discharged through an integrated filter 20 into an intermediate reservoir 19, from which the transmission and the clutch actuation device are supplied (fig. 8 and 9).

List of reference numerals

1 Cooling Medium conveying Module

2 suction pipeline joint

3a first consumer connection

3b second consumer connection

3c third consumer connects

4 casing

5 input end of pump

6 Pump

7 pump output

8 distributor valve

9 electric motor

10 control unit

11 interface

12 inflow joint

13 reflux joint

14 heat exchanger

15 pipeline system

16 first pipeline

17 second pipeline

18 discharge fitting

19 storage device

20 filter

21 discharge line.