DE102017106198A1 - Actuation module for clutches and gear actuator systems and gearbox with actuator - Google Patents

Abstract

The invention relates to an actuation module (1) for a vehicle drive train, for attachment to a housing (2), with at least one electric pump actuator (3) for hydraulically actuating a clutch and a gear selector system and a valve unit (4), which by means of a plurality of valves, the hydraulic Operation of the clutch and the Gangstellersystems controls, wherein a fastening means (6) of the actuating module (1) is geometrically shaped such that a first part (7) of the actuating module (1) outside and a second part (8) of the actuating module (1) within of the housing (2) is positionable. Furthermore, the invention also relates to a transmission for a vehicle, with a housing (2), a clutch, a gear actuator system and an actuating module (1) according to the invention, wherein the fastening means (6) of the actuating module (1) mounted on the housing (2) in that the first part (7) is arranged outside the housing (2) and the second part (8) inside the housing (2)

Description

The present invention relates to an actuation module for a vehicle drive train, for attachment to a (gear) housing, with at least one electric pump actuator for hydraulic actuation of a clutch and a gear selector system, and a valve unit, which by means of several valves, the hydraulic actuation of the clutch and the gear selector system controls. Furthermore, the invention also relates to a transmission for a vehicle.

Known actuation modules for actuation of clutches, in particular so-called CASS (clutch subsystem), and gear selector systems, in particular so-called GASS (gear subsystem) usually consist of die-cast aluminum plates with integrated valves. Such a unit is, for example, from the WO 2012/113368 A2 known. The valves in these units pass oil to the respective consumers to operate, for example, the clutch, such as a clutch (K0), or gear actuator piston. The oil supply for pressure build-up etc. here takes over a pump, which is usually driven by an electric motor, and therefore can also be referred to as an electric pump actuator.

A gear actuator system is understood to mean a device which assumes the engagement of the gears in an automatic transmission. A gear actuator system for this purpose preferably has a plurality of gear shifter, which in turn each have at least one (gear shifter) valve. These valves are preferably electrically energized and thus control the hydraulic pressure necessary to perform the switching operations (i.e., the engagement of the gears).

Due to the integral construction, the known actuation modules, so-called power packs or system packs, must be completely enclosed by the transmission housing during assembly to the vehicle transmission, in order, for example, not to give off leakage to the environment. Alternatively, a seal is conceivable, the implementation of which is very complex and associated with very high costs.

Therefore, the known actuation modules usually require a lot of space because they must be mounted inside the housing (also known as gear bell) due to the design. In addition, the arrangement within the housing also complicates the maintenance or replacement of the actuation module or individual components thereof, since this is only possible by disassembling the entire housing.

The object of the invention is to avoid or at least mitigate the disadvantages of the prior art, and in particular to implement a more compact concept of an actuation module in order to reduce the required installation space.

The object of the invention is achieved in a generic actuation module according to the invention in that a fastening device of the actuating module is geometrically shaped such that a first part of the actuating module is positioned outside and a second part of the actuating module within the housing.

By combining the electric pump actuator with the preferably separate valve unit thus a significantly more compact space can be achieved, since only a part of the actuating module is arranged in the housing.

Advantageous embodiments are claimed in the subclaims and are explained below.

Thus, it is advantageous if the first part of the actuating module has the at least one electric pump actuator and the second part of the actuating module has the valve unit.

Alternatively, two or more electric pump actuators may also be present. In the event that the actuation module comprises two electric pump actuators, a first electric pump actuator for the actuation of the clutch (CASS) is used and a second pump actuator for the actuation of the gear actuator system (GASS) is used. More preferably, then the first part of the actuating module on both electric pump actuators.

Furthermore, it is advantageous if the fastening device has an adapter plate which can be designed to close the housing.

Thus, the transmission housing can be sealed against the environment, which can be dispensed with an additional cover for closing the transmission housing at this point, which reduces the total number of components.

Furthermore, it has proven to be advantageous if the first part is arranged on a first side of the adapter plate and the second part is arranged on a second side of the adapter plate facing away from the first side.

This arrangement saves space and allows the electric pump actuator and other possible control devices or consumers and in particular their contacting need not be laboriously sealed because they are located outside the housing and thus separated from the transmission sump within the housing. Thus, interfaces to consumers, such as. Gangsteller or a clutch (K0 clutch) are realized inside and outside the housing, and implemented the integration of the valves in the actuator module. Furthermore, this also reduces the thermal load on the electronics, which can save costs.

A further advantageous embodiment provides that the actuation module further comprises a control device, for example in the form of a circuit board, for the hydraulic actuation of the clutch and the gear actuator system.

In this case, it is advantageous if the control unit has interfaces or slots for connecting additional components and / or the valves of the valve unit.

By providing further such interfaces, it is possible to integrate all the functions of an additional transmission control unit into the control unit and thus be able to dispense with an additional transmission control unit.

The additional components may in this case, for example, have an electric oil cooling pump and / or a vehicle control unit, which is preferably responsible for the control throughout the vehicle.

It has been found to be advantageous if the electric oil cooling pump is disposed within the housing, since so possible leakage of the electric oil cooling pump is not released to the environment.

Thus, the control unit is used for sensor connection, for example. Displacement sensors for gear shifter, temperature sensor (s), speed sensor (s) and on the other also for contacting the gear actuator valves or the K0 valve to actuate the clutch.

In this case, the control device can be arranged on the first side or on the second side of the adapter plate.

Here, the first side, the side of the adapter plate which faces away from the housing and thus lies outside of the housing, while the second side of the adapter plate is the housing-facing side, and thus lies within the housing.

The arrangement outside the housing allows the control unit to be easily dismantled if necessary without the entire housing having to be opened. In such an arrangement, the sensor connections, e.g. Displacement sensors for the gear shifter, temperature sensor (s) and / or speed sensor (s) are guided through the adapter plate to the control unit of the hydraulic control, for example via a Flexbandanbindung or directly overmolded with plastic interconnects. Thus, a complex sealing of the control unit and in particular of the electrical contacts with respect to the transmission sump can be dispensed with here.

Alternatively, the arrangement of the control device within the housing, to avoid the (possibly) complex implementation of the sensor connection through the adapter plate, since in this case only the contacts of the electric pump actuator and other possible consumers, which are arranged outside the housing, are passed through the adapter plate. However, it should be noted in this arrangement that the control unit of the hydraulic control must be sealed against the transmission sump.

It is also advantageous if the valve unit has a support plate for receiving the valves.

This serves firstly for receiving the valves and secondly as a fastening device in order to fasten the valve unit to the adapter plate. Furthermore, the carrier plate can also be used to hold the sensor.

For the oil supply of the actuating module, it is advantageous if the actuation module has an oil reservoir connected to the electric pump actuator.

It must be ensured here that an internal leakage of the valves is returned to the reservoir via a drain. Alternatively, the electric pump actuator may also draw the necessary oil to actuate, for example, the clutch (s) or the gear actuators (in the gear selector system) from the transmission sump. In this case, however, then a filtration of the sucked oil is required.

Furthermore, the invention also relates to a transmission for a vehicle, comprising a housing, a clutch, a gear actuator system and an actuating module according to the invention, wherein the fastening means of the actuating module is mounted on the housing, that the first part outside the housing and the second part within the Housing are arranged.

In other words, the invention consists of connecting an electric pump actuator for actuation of a clutch (CASS) with a valve unit for actuation of gear actuator systems (GASS). In this case, only a part of the system pack or the actuating module must be integrated in the gear housing or the bell housing. For this purpose, the electric pump actuator or the electric pump actuators is mounted on an adapter plate on the side lying outside the bell housing. On the other, inner side of the adapter plate, another plate, which contains, for example, valves for controlling a separating clutch (K0) or gear actuator piston can be attached. In this case, the adapter plate can fulfill a number of functions, eg closure of the bell housing, interface to consumers (eg K0, gear regulator, etc.) inside and outside the bell housing, and integration of the valves.

This means that the combination of the electric pump actuator (responsible for CASS) with a valve unit (GASS) can achieve a much more compact installation space, as only a part of the system pack (i.e., the actuation module) is integrated into the transmission bell. In addition, the entire valve unit, in conjunction with the pump actuator (s) and an optional additional cooling oil pump, can perform several functions, such as: replacing a conventional power pack or system pack, and thus providing "power-on-demand" capability; Sealing the gear housing and thus replacement for an additional cover; Interface to various internal and external consumers as well as to the additional oil cooling pump; Carrier for leadframe and sensors; Connecting element / lock between the interior of the bell housing and the environment, as well as the possibility on the system pack control unit to integrate all the functions of an additional gearbox control unit and replace it with it.

In particular, the adapter plate fulfills functions such as closing the bell housing, interface with consumers inside and outside the bell housing, integration of the valves and routing for the operating medium.

In addition, e.g. the entire system pack or individual components are replaced without first dismantling the entire bell housing.

• 1 eine erste beispielhafte Ausführungsform eines Betätigungsmoduls gemäß der vorliegenden Erfindung;
• 2 eine zweite beispielhafte Ausführungsform des Betätigungsmoduls gemäß der vorliegenden Erfindung; und
• 3 eine dritte beispielhafte Ausführungsform des Betätigungsmoduls gemäß der vorliegenden Erfindung.

The invention will be explained in more detail with the aid of figures, in which different embodiments are shown. Show it:

• 1 a first exemplary embodiment of an actuating module according to the present invention;
• 2 a second exemplary embodiment of the actuating module according to the present invention; and
• 3 a third exemplary embodiment of the actuating module according to the present invention.

The figures are merely schematic in nature and are only for the understanding of the invention. The same elements are provided with the same reference numerals.

Features of the individual embodiments can also be realized in other embodiments. So they are interchangeable.

1 shows a first exemplary embodiment of an actuating module 1 , which is preferably used for actuation or actuation of vehicle clutches and / or gear actuator systems. The actuation module 1 (also referred to as power pack or system pack) is on a housing 2 a vehicle transmission, and can be roughly divided into two parts: a first part 7 which is above a fastening device 6 is arranged and a second part 8th , which is below the fastening device 6 is arranged.

The actuation module 1 includes at least one, in this embodiment, two electric pump actuators 3 , and a valve unit 4 , of which only a support plate 5 for receiving valves (not shown here) is shown. The valves can be provided, for example, for the hydraulic supply of a separating clutch (K0) (K0 valve) or gear actuator piston (the gear actuator valves) in the corresponding hydraulic lines. The valves themselves are preferably electrically actuated and can be actuated, for example, by means of a coil or other electromagnetic device.

The pump actuators 3 each have a pump and an electric motor, wherein the pump is driven by the electric motor and is responsible for building up the pressure of the required hydraulic pressure, via which the so-called consumers, such as, for example, the separating clutch, are controllable.

The actuation module 1 is in this embodiment via an adapter plate 9 on the housing 2 (Also referred to as transmission housing or bell housing) for a transmission (not shown) attached. The adapter plate 9 Here is an example for the fastening device 6 about which the actuation module 1 on the housing 2 is attached.

Here is the actuation module 1 so arranged that the adapter plate 9 so with the case 2 connected is that it has a housing opening 10 closes in a known manner of a housing cover. The electric pump actuators 3 are on a first page 11 the adapter plate 9 that is a case exterior A facing, whereas the valve unit 4 or the carrier plate 5 the valve unit 4 on a second side 12 the adapter plate 9 , which is facing a housing inside I, is arranged. The carrier plate 5 has a plurality of receiving openings for receiving valves 13 . 14 on.

The adapter plate 9 fulfilled in this embodiment equal to several functions, such as: the closure of the housing 2 ; Interface to consumers, such as a disconnect clutch and the gear selector system, inside and outside the case 2 , Integration of valves (not shown), as well as the routing for the operating medium.

The arrangement of the actuating module shown here 1 Saves space because the housing 2 is no longer around the entire actuator module 1 must be guided around. In addition, it is possible with this arrangement that control devices and in particular their electrical contact (see 2 and 3 ) need not be laboriously sealed because they are separated from the transmission sump (not shown) within the housing 2. This also reduces the thermal load on the electronics, thereby saving costs.

In addition, in this arrangement, the entire actuation module 1 or individual components are replaced, without the housing 2 to dismantle in advance. 1 represents only the arrangement of the individual components, the connections to the sensor and the like. are not seen in this view, as a control in this embodiment as one of the actuation module 1 separate component is executed, which in the view of 1 not visible.

2 shows a second exemplary embodiment of the actuating module 1 , which compared to the in 1 A first embodiment shown further comprises a controller 15 for the hydraulic actuation of the clutch and the gear actuator system (hydraulic control). In this figure, the respective connections to various sensors and valves are shown schematically by connecting lines.

The in the 2 and 3 shown positions of sensors and contact points is only an example and may also be otherwise arranged.

The control unit 15 is on the first page in the exemplary embodiment shown here 11 the adapter plate 9 arranged. It can be used as a separate part on the adapter plate 9 be attached or integrated into this.

This could be, for example, if necessary, this controller 15 easy disassembly, without the entire housing 2 to have to open.

The control unit 15 is equipped with a board that has several sensor connections, such as for a temperature sensor 16 , a speed sensor 17 and displacement sensors 18, 19, 20, 21 for the gear plate, as well as contacts 22 . 23 . 24 . 25 . 26 for the valves. Here is the contact 22 a valve for the separating clutch (K0), the displacement sensor 18 a first gear and the contact 23 associated with a valve for the first gear actuator (first gear actuator valve). The displacement sensor 19 is a second gear actuator and the contact 24 associated with a valve for the second gear actuator (second gear actuator valve). The displacement sensor 20 is a third gear knob and the contacting 25 associated with a valve for the third gear actuator (third gear actuator valve). The displacement sensor 21 is a fourth gear and the contact 26 associated with a valve for the fourth gear actuator (fourth gear actuator valve). The electric pump actuators 3 are also via contacts 27 to the controller 15 connected.

The control unit 15 thus serves, inter alia, for the electrical control of the valves of the valve unit 4, which in turn control the hydraulic supply to the consumer, such as the clutch, in particular the separating clutch (K0) or the gear selector system, which has the first to fourth gear, and can also signals the sensors 16 . 17 . 18 , 19, 20, 21 process.

Furthermore, the actuation module 1 via the control unit 15 optionally additionally, as shown in this embodiment, with an electric oil cooling pump 28 which inside the housing 2 (ie, on the inside of the case I ), as well as with a vehicle control unit (electronic control unit - ECU) 29, which outside the housing 2 (ie, on the outside of the case A ) is connected.

In the in 2 embodiment shown are the sensor connections 16 . 17 . 18 . 19 . 20 . 21 as well as the contacts 22 . 23 . 24 . 25 . 26 for the valves and a contacting 30 for the oil cooling pump 28 by the respective component the adapter plate 9 to the controller 15 guided. This guide can be realized, for example, via a flexband connection or via conductors that are overmolded directly with plastic in order to cover both the interior of the housing 2 To seal the environment as well as the tracks themselves enough.

In the in 2 shown arrangement can be a complex sealing of the control unit 15, and in particular the electrical contacts on the control unit 15 , to be dispensed with over the transmission sump, as the control unit 15 outside the case 2 , on the first page 11 the adapter plate 9 is arranged.

A contact 31 of the vehicle control unit 29 to the control unit 15 can be realized, for example, by means of a plug.

3 shows a third exemplary embodiment of the actuating module 1 , which predominantly with the in 2 the exemplary embodiment shown, which is why below only the differences will be discussed.

In the in 3 embodiment shown is the control unit 15 on the second side 12 of the adapter plate 9 , and thus inside the case 2 arranged. By such an arrangement, the possibly complex implementation of the sensor connection of the sensors 16 . 17 . 18 . 19 . 20 . 21 as well as the contacts 22 . 23 . 24 . 25 . 26 for the valves through the adapter plate 9 , as in 2 shown avoided. At the in 3 shown arrangement, only the contacts 27 the electric pump actuators 3 as well as the contact 31 of the vehicle control device 29 through the adapter plate 9 be guided.

However, in this embodiment, the controller must 15 be sealed against the transmission sump.

In all in 1 to 3 Exemplary embodiments shown is the oil supply of the actuating module 1 not shown, but should be briefly mentioned at this point. The oil supply of the actuating module 1 can be connected to the electric pump actuators 3 connected reservoir done. Here, the internal leakage of the valves must be returned via a drain in the reservoir. Alternatively, the electric pump actuators 3 the necessary oil to, for example, to operate the clutches or gear plate, also suck from the transmission sump. Here then a filtration of the sucked oil would be necessary.

LIST OF REFERENCE NUMBERS

1

actuation module

2

casing

3

electric pump actuator (EPA)

4

valve unit

5

support plate

6

fastening device

7

first part

8th

second part

9

adapter plate

10

housing opening

11

first page

12

second page

13

receiving opening

14

receiving opening

15

control unit

16

temperature sensor

17

Speed sensor

18

displacement sensor

19

displacement sensor

20

displacement sensor

21

displacement sensor

22

Contact for K0 valve

23

Contact for first gear actuator valve

24

Contact for second gear actuator valve

25

Contact for third gear actuator valve

26

Contact for fourth gear actuator valve

27

Contacting for electric pump actuator

28

electric oil cooling pump

29

Vehicle control unit

30

Contacting for electric oil cooling pump

31

Contacting for vehicle control unit

A

Housing outside

I

Housing inside

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• WO 2012/113368 A2 [0002]

Claims (10)

Actuating module (1) for a vehicle drive train, for attachment to a housing (2), with at least one electric pump actuator (3) for the hydraulic actuation of a clutch and a gear actuator system, and a valve unit (4), which by means of a plurality of valves, the hydraulic actuation of the clutch and the Gangstellersystems controls, characterized in that a fastening means (6) of the actuating module (1) is geometrically shaped such that a first part (7) of the actuating module (1) outside and a second part (8) of the actuating module (1) within of the housing (2) is positionable. Actuation module (1) according to Claim 1 , characterized in that the first part (7) comprises the at least one electric pump actuator (3) and the second part (8) comprises the valve unit (4). Actuation module (1) according to Claim 1 or 2 , characterized in that the fastening device (6) has an adapter plate (9). Actuation module (1) according to Claim 3 , characterized in that the first part (7) on a first side (11) of the adapter plate (9) is arranged and the second part (8) on a, the first side (11) facing away, the second side (12) of the adapter plate (9) is arranged. Actuating module (1) according to one of Claims 1 to 4 , characterized in that the actuating module (1) further comprises a control unit (15) for the hydraulic actuation of the clutch and the gear selector system. Actuation module (1) according to Claim 5 , characterized in that the control unit (15) has interfaces for connecting additional components and / or the valves of the valve unit (4). Actuation module (1) according to Claim 6 , characterized in that the additional components comprise an electric oil cooling pump (28) and / or a vehicle control unit (29). Actuating module (1) according to one of Claims 5 to 7 , characterized in that the control device (15) on the first side (11) or on the second side (12) of the adapter plate (9) is arranged. Actuating module (1) according to one of Claims 1 to 8th , characterized in that the valve unit (4) has a carrier plate (5) for receiving the valves. A transmission for a vehicle, comprising a housing (2), a clutch, a gear actuator system and an actuation module (1) according to one of the preceding claims, wherein the attachment device (6) of the actuation module (1) is attached to the housing (2), in that the first part (7) is arranged outside the housing (2) and the second part (8) is arranged inside the housing (2).

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