DE102010035589A1 - Control device e.g. electro hydraulic control device, for dual clutch transmission of e.g. passenger car, has valves controlled for transition from state into another state such that valves have different directional valve functions - Google Patents

Abstract

The device has a pressure control line (14) controlling a switch element (18) for speed setting. Another pressure control line (16) is independent of the former line. A control slide (12) includes multiple control states and control valves e.g. 4-way-3-settings-proportional valve and 3-way-2-settings-proportional valve, for the respective pressure control lines. The valves are simultaneously and commonly controlled by an actuating element for transition from one of the control states into the other control state such that the control valves have different directional valve functions. An independent claim is also included for a multi-speed transmission including an input shaft.

Description

The invention relates to a control device of a multi-speed transmission with the features of the preamble of claim 1.

Common control devices, in particular hydraulic control devices, for multi-stage or multi-speed transmissions, such as dual-clutch transmissions, have a complex control mechanism with a plurality of control valves. There is also the need for a pressure force control of the couplings with pressure control valves and pressure switching valves. For the control of a clutch cylinder can be achieved by means of a Druckwegregelung that the coupling halves are controlled approached to the touch point. For the control of a shift cylinder, however, the pressure force control has been proven, since it results in a low load and thus a low wear.

In the document DE 101 34 115 A1 a hydraulic circuit for the hydraulic control of a dual-clutch transmission is described. A clutch cylinder is preceded by a proportional flow valve, and the switching cylinders each preceded by a proportional pressure valve. Between the switching cylinders and the pressure valves, a central directional valve device is arranged.

In the document DE 103 20 524 A1 discloses a hydraulic circuit for controlling a dual-clutch transmission, wherein the hydraulic circuit for each transmission group has its own hydraulic branch and each hydraulic branch, a clutch control valve for a clutch and at least one shift control valve for driving associated shift cylinder. There are also safety valves, which are designed as proportional pressure control valves.

With a high number of control valves, the control device becomes increasingly disadvantageously complex, requires a corresponding space and has a corresponding weight. Widespread controls push their limits in about a dozen valves to be controlled.

Object of the present invention is therefore to provide a control of a multi-speed transmission in which additional control operations are simple and inexpensive to implement.

This object is achieved by a control device of a multi-speed transmission with the features of claim 1. Advantageous developments of the invention are characterized in the dependent claims.

According to the invention, a control device of a multi-speed transmission comprises at least a first pressure control line for controlling a gear shift element and a second pressure control line which is independent of the first pressure control line, and at least one spool having a plurality of control states, the spool at least a first control valve for the first Pressure control line and a second control valve for the second pressure control line comprises, which are at the same time jointly controllable by means of an actuating element to the transition from a control state to another control state. The first control valve and the second control valve according to the invention have different way valve functions.

In particular, the control device according to the invention may also be referred to as a mechatronic control device, a hydraulic control device with a hydraulic fluid, more precisely electro-hydraulic control device, or a pressure control device. The control device preferably uses a hydraulic fluid, for example a hydraulic oil, as hydraulic fluid.

The procedure according to the invention makes it possible to reduce or minimize the number of control valves to be triggered. In this way, advantageous additional control tasks can be implemented without exceeding a predetermined maximum number of tax sliders to be used. As a consequence, lower costs occur and a lower weight can be realized. For example, in addition to the circuit function and the clutch function, clutch cooling, torque vectoring, a further clutch for an electric drive (hybrid system) or a parking lock can be additionally realized.

In specific embodiments of the control device according to the invention, the actuating element for controlling the spool may comprise a magnet and act hydraulically on the spool. In accordance with the invention, the number of necessary magnets is reduced or minimized, which in addition to the reduction of costs and weight and a reduction in the space volume is possible. Further, or alternatively, the spool may include a spool having a plurality of control edges. Advantageously, a plurality of valve functions can thereby be actuated by means of a control slide. In other words, the spool integrates several valve functions.

In a preferred embodiment of the control device according to the invention, the first control valve of the spool is a 4-way 3-position proportional valve and the second control valve of the spool is a 3-way 2-position proportional valve. This configuration according to the invention integrates two functions with a short overall length. In particular, the 4-3 proportional valve can be used to control an actuator or a shift cylinder, for example a double-acting shift cylinder, for a gear selector system, and the 3-2 proportional valve to control a further spool, a cylinder or the release of a channel. The simultaneous control of two valve functions is also possible because the reversible drive of the shift cylinder in time only briefly, for gear engagement, occurs. In particular, the spool can be designed such that a hydraulic tank connection is doubly usable for the valves.

In a number of embodiments, the control device according to the invention further comprises at least one shift control spool. In this case, the second pressure control line is designed such that it is used to control the Schaltsteuerschiebers used. In other words, at least one control valve of the spool is used to control another spool, here a Schaltsteuerschiebers. Specifically, the Schaltsteuerschieber in certain embodiments, three 3-way 2-position proportional valves.

Alternatively, or further, an embodiment of the control device according to the invention may comprise at least one proportional pressure reducing valve with a leading control edge. Due to a leading control edge, the hydraulic fluid, in particular the hydraulic oil in the spool, must overcome two obstacles in the form of two control edges before leakage occurs. A certain overlap length means a defined leakage, so that advantageously the leakage balance can be reduced.

In a first group of preferred embodiments, the control device according to the invention additionally comprises: the first pressure control line and the second pressure control line each have a branch point in front of the spool valve. There are provided a shift control slide, another shift control slide and a control spool connected in parallel to the spool after the branch points. The further control spool has a plurality of control states and comprises at least a first control valve for the first pressure control line and a second, in particular different from the first control valve for the second pressure control line, which are simultaneously jointly controllable by another actuator to the transition from one control state to another control state. In this case, the second pressure control line of the spool for driving the Schaltsteuerschiebers is designed, and the second pressure control line of the other spool is designed to control the further Schaltsteuerschiebers.

In a second group of preferred embodiments, the control device according to the invention additionally comprises: The first pressure control line has a branch point in front of the control slide. It is a the spool after the branch point connected in parallel another control slide provided. The further control spool has a plurality of control states and comprises at least a first control valve for the first pressure control line and a second control valve for a third pressure control line, which are simultaneously jointly controllable by means of a further actuating element for the transition from one control state to another control state. The second pressure control line of the spool leads to the second control valve in the first pressure control line, and the third pressure control line of the further spool is designed for driving a further switching element.

The described embodiments of the first and the second group can be used with particular advantage for dual-clutch transmission, in particular with two partial transmissions, preferably with four gear ratios: A control device according to the invention in the embodiment of the first group is for the first partial transmission and a further control device in the embodiment of the first group provided for the second partial transmission. Alternatively, a control device according to the invention is provided in the embodiment of the second group for the first partial transmission and a further control device in the embodiment of the second group for the second partial transmission. In this way, simple control devices with reduced or minimized number of spools are created.

In the context of the invention is also a multi-speed transmission, especially for a vehicle. A multi-speed transmission comprises at least one input shaft, an output shaft, at least a first gear train of a first gear and a second gear train of a second gear, with a different from the first gear train translation, and a switching element for activating at least one of the gear trains such that a torque of the at least an input shaft is transferable to the output shaft via the activated gear train. According to the invention, such a transmission on a control device according to the invention for switching the transmission with individual features or feature combinations according to this illustration.

Preferably, the multi-speed transmission is designed or dimensioned for a trackless land vehicle, in particular a motor vehicle, preferably a passenger car or a truck. The multi-speed transmission may be a manual transmission or an automatic transmission.

Further advantages and advantageous embodiments and developments of the invention will be described with reference to the following description with reference to the figures. It shows in detail:

1 in part A, a circuit diagram of a control slide used in a preferred embodiment of a control device according to the invention, which realizes a 4-way 3-position proportional valve and a 3-way 2-position proportional valve, and
in part B, a schematic representation of the channel position of the spool,

2 in the part A, a circuit diagram of a switching control valve used in a preferred embodiment of a control device according to the invention, which realizes three 3-way 2-position proportional valves, and in the partial image B, a schematic representation of the channel position of the Schaltsteuerschiebers,

3 1 is a circuit diagram of a first embodiment of a control device according to the invention for a partial transmission of a dual-clutch transmission,

4 2 is a circuit diagram of a second embodiment of a control device according to the invention for a partial transmission of a dual-clutch transmission,

5 a circuit diagram of a first embodiment of a control device according to the invention for a dual-clutch transmission with a partial transmission control according to the in the 3 shown embodiment, and

6 a circuit diagram of a second embodiment of a control device according to the invention for a dual-clutch transmission with a partial transmission control according to that in the 4 shown embodiment.

The 1 shows in the partial image A a circuit diagram of a control slide used in a preferred embodiment of a control device according to the invention 12 , which realizes a 4-way 3-position proportional valve and a 3-way 2-position proportional valve and thus can also be referred to as a directional control valve. It is shown schematically as a circuit diagram showing three basic wiring connections to the spool valve 12 can be achieved. The two proportional valves can draw pressure energy from different sources, thus opening up a variety of control planning solutions for control devices. The 4-way 3-position proportional valve is used for the controlled opening and interruption of a first pressure line 14 with network pressure P from a high pressure circuit 22 and is preferred for controlling a switching element 18 , For example, a double-acting shift cylinder (for a gear actuator system), used with working ports A and B. The 3-way 2-position proportional valve acts on a second pressure line 16 with control pressure PC from a control pressure circuit 24 a, so that at the working port C, a control switch slide 20 , a cylinder or a channel can be controlled for release. The control switch slide 20 has an application device for its activation 32 on.

In drawing B of the 1 is the channel position of the spool 12 shown schematically. The opening widths of the individual channels and the communication paths between the channels of the spool valve 12 be by means of a proportional magnet 26 actuatable piston 30 regulated. The proportional magnet 26 urges the piston 30 against a return spring 28 , The 4-way 3-position proportional valve is realized in the right-hand part of the spool, the 3-way 2-position proportional valve is in the left part. In this case, due to the connection sequence qualitatively the following compounds in function of the position of the piston 30 The work connection A can be connected on the one hand to the tank connection T and on the other hand to the network pressure P. The length of each separating piston cylinder or the individual control edges, the working port B is connected to the network pressure P when the working port A in turn is in communication with the tank port T. In contrast, the working port B is connected to the tank port T when the working port A in turn is under network pressure P. The length of the control edges is designed such that the switching of the network pressure P from the working port A to the working port B or vice versa is not punctual or abrupt, but such that an area exists in which both working ports A and B are virtually closed or with the tank T are connected. While working port A under Network pressure P is and the valve is relatively wide open, the working port C is on the tank T, from a certain position of the piston 30 to which the working port A is still subjected to network pressure P, but the valve is opened relatively low, the working port C is set under control pressure PC. In a small area, the working connection C is connected both to the tank T and to the control pressure PC. In the area of the piston positions, in which both working ports A and B are connected to the tank T, the valve for connecting the working port C to the control pressure PC is opened relatively wide.

In this connection it should also be emphasized that in this preferred embodiment of the spool valve 12 a double use of a tank connection T takes place, so that the piston 30 is carried out in an advantageous manner relatively short. The spool 12 has six control edges, the exact sequence of which is a function of the position of the piston 30 determines the opening cross sections of the individual connection connections. The spool 12 can be designed such that a flow force compensation takes place. Variants can be a cartridge valve or a control block. The piston 30 runs at its ends through chambers which rest against the lubricating oil tank connection TL.

The 2 shows in the partial image A a circuit diagram of a switching control slide used in a preferred embodiment of a control device according to the invention 20 that realizes three 3-way 2-position proportional valves. According to the invention, the loading device 32 for adjusting the shift control slide 20 from the work connection C of in the 1 shown spool 12 driven.

In drawing B of the 2 is the channel position of the shift control spool 20 shown schematically. There is a sequence of three connection groups network pressure P, working connection A and tank connection T numbered here for illustration purposes. The piston 30 is according to the invention against the return spring 28 urged by the control pressure chamber 32 the adjustable pressure of the working port C of the in the 1 shown spool 12 is applied. The individual 3-way 2-position proportional valves can be freely combined. The shift spool 20 has six control edges.

The 3 is a circuit diagram of a first embodiment of a control device according to the invention 10 for a partial transmission of a dual-clutch transmission. The control device 10 based on the use of two control valves according to the invention 12 , The 4-way 3-position proportional valve respectively to the drive pressure in a first pressure line 14 a high pressure circuit 22 after a first branch point 41 for a switching element 18 acts. The switching elements 18 are preferably double-acting cylinders, in particular uniform or non-uniform surface. In addition, they control the second pressure line 16 a control pressure circuit 24 after a second branch point 43 connected 3-way 2-position proportional valves of the spool 12 each a shift control slide 20 by means of its loading device 32 ,

In high pressure circle 22 is also a pressure reducing valve 36 provided with a leading control edge, which causes a high density. Due to the sequence of the channels in the pressure reducing valve and the height of the piston cylinder is causing the network pressure P is initially set at a certain position of the piston with a channel with reduced pressure P1 in connection, while the working port A is still applied to the tank T. The connection of the channel P1 to the working port A is first made to another position of the piston. Between the two mentioned positions of the piston can be about 0.6 mm stroke. The pressure reducing valve 36 can be designed such that a flow force compensation takes place. The high pressure circuit 22 also has another functional connection 42 , for driving a clutch switching element 44 serves. In this area is also a pressure sensor 46 Installed.

One of the three 3-way 2-position proportional valves of the left part of the 3 to see switching control slide 20 acts to open a cooling oil pressure circuit 40 , Alternatively, the valve connects to a lubrication pressure circuit 38 ago.

As an additional function is a pressure-holding function in which the active clutch remains closed, usable, which serves to maintain the current driving condition. As an alternative to this pressure-holding function, a connection to the tank T can be realized.

• – Sind sowohl der linke Schaltsteuerschieber 20 als auch der rechte Schaltsteuerschieber 20 passiv, so ist die Kupplungsfunktion die Druckhaltefunktion beziehungsweise die Verbindung zum Tank T, die Schaltungsfunktion ist eine Verbindung zum Tank T, und die Kupplungskühlung erfolgt als Grundkühlung.
• – Wenn der linke Schaltsteuerschieber 20 aktiv und der rechte Schaltsteuerschieber 20 passiv sind, ist für die Kupplungsfunktion das proportionale Druckminderventil verbunden, es erfolgt eine Kupplungsregelung, die Schaltungsfunktion ist gesperrt, und das Kupplungskühlöl ist gesteuert.
• – Wenn der linke Schaltsteuerschieber 20 passiv und der rechte Schaltsteuerschieber 20 aktiv sind, ist die Kupplungsfunktion „cut off”, eine redundante Abschaltung, die Schaltungsfunktion ist eine Verbindung zum Tank T, und es erfolgt eine volle Kupplungskühlung.
• – Sind sowohl der linke Schaltsteuerschieber 20 als auch der rechte Schaltsteuerschieber 20 aktiv, so ist der Kupplungszustand eingefroren („gesperrt”), es erfolgen eine Schaltungskraftsteuerung mittels proportionalem Druckminderventil und eine Kühlölsteuerung.

The Indian 3 Schematic shown has the following logic:

• - Are both the left shift spool 20 as well as the right shift spool 20 Passive, the clutch function is the pressure holding function or the connection to the tank T, the circuit function is a connection to the tank T, and the clutch cooling is carried out as a basic cooling.
• - When the left shift spool 20 active and the right shift spool 20 are passive, the proportional pressure reducing valve is connected for the clutch function, there is a clutch control, the shift function is disabled, and the clutch cooling oil is controlled.
• - When the left shift spool 20 passive and the right shift spool 20 are active, the clutch function is "cut off", a redundant shutdown, the circuit function is a connection to the tank T, and there is a full clutch cooling.
• - Are both the left shift spool 20 as well as the right shift spool 20 active, so the coupling state is frozen ("locked"), there is a switching force control by means of proportional pressure reducing valve and a cooling oil control.

In the 4 is a circuit diagram of a second embodiment of a control device according to the invention 10 shown schematically for a partial transmission of a dual clutch transmission.

The control device 10 based on the use of two control valves according to the invention 12 , The 4-way 3-position proportional valve respectively to the drive pressure in a first pressure line 14 a high pressure circuit 22 after a first branch point 41 for a switching element 18 acting on two proportional pressure reducing valves 36 , at the entrance of each of the high pressure circuit 22 is applied. The pressure reducing valve pictured on the right 36 acts on the to the tax pushers 12 leading pressure line, the pressure reducing valve shown on the left acts on a third pressure line 47 The switching elements 18 are preferably double-acting cylinders, in particular uniform or non-uniform surface. Before the first branch point 41 there is a second pressure line 16 to which the 3-way 2-position proportional valve of the spool shown on the right 12 acts. Through the 3-way 2-position proportional valve of the spool shown on the left 12 runs the third pressure line 47 , This leads to a clutch switching element 44 , This is preferably a single-acting cylinder. It is also a pressure sensor 46 intended.

In addition, exists in this in the 4 shown embodiment, a connection to a further control device 48 for another sub-transmission and another connection to another control function 50 with switching pressure.

• – Sind sowohl der linke Schaltsteuerschieber 20 als auch der rechte Schaltsteuerschieber 20 passiv, so ist die Kupplungsfunktion „cut off”, eine redundante Abschaltung, die Schaltungsfunktion ist eine Verbindung zum Tank T.
• – Wenn der linke Schaltsteuerschieber 20 aktiv und der rechte Schaltsteuerschieber 20 passiv sind, ist für die Kupplungsfunktion das proportionale Druckminderventil verbunden, es erfolgt eine Kupplungsregelung, die Schaltungsfunktion ist eine Verbindung zum Tank T.
• – Wenn der linke Schaltsteuerschieber 20 passiv und der rechte Schaltsteuerschieber 20 aktiv sind, ist die Kupplungsfunktion „cut off”, eine redundante Abschaltung, die Schaltungsfunktion umfasst eine Schaltungssteuerung mit proportionalem Druckminderventil.
• – Sind sowohl der linke Schaltsteuerschieber 20 als auch der rechte Schaltsteuerschieber 20 aktiv, so für die Kupplungsfunktion das proportionale Druckminderventil verbunden, es erfolgt eine Kupplungsregelung, und die Schaltungsfunktion umfasst eine Schaltungssteuerung mit proportionalem Druckminderventil.

The Indian 4 Schematic shown has the following logic:

• - Are both the left shift spool 20 as well as the right shift spool 20 passive, so the coupling function "cut off", a redundant shutdown, the circuit function is a connection to the tank T.
• - When the left shift spool 20 active and the right shift spool 20 are passive, the proportional pressure reducing valve is connected for the clutch function, there is a clutch control, the circuit function is a connection to the tank T.
• - When the left shift spool 20 passive and the right shift spool 20 are active, the coupling function is "cut off", a redundant shutdown, the circuit function includes a circuit control with proportional pressure reducing valve.
• - Are both the left shift spool 20 as well as the right shift spool 20 active, so connected to the clutch function, the proportional pressure reducing valve, there is a clutch control, and the circuit function includes a circuit control with proportional pressure reducing valve.

The 5 is a circuit diagram of a first embodiment of a control device according to the invention 10 for a dual-clutch transmission with two partial transmission controls according to the in the 3 shown embodiment. The first partial transmission control 52 and the second partial transmission control 54 are connected in parallel to each other in terms of hydraulics. Specifically, the in 3 only schematically indicated further functional connection 42 designed as a further proportional pressure reducing valve. Details of the partial transmission controls 52 . 54 are the 3 and the associated description.

For separate control of the amount of cooling oil in the two clutches another inventive spool is used as a proportional cooling oil control valve 56 , so that a fine dosage is possible. The control pressure for the second pressure line 16 is via a pressure reducing valve 60 from the high pressure circuit 22 made available. The high pressure circuit has a pressure filter 62 with check valve. It is also an energy storage 58 associated with check valve. The control device 10 also has two controllable pressure relief valves 64 and a hydraulic mechanical pressure relief valve 66 on. Furthermore there are: a filter 68 , a mechanical pressure relief valve 70 , a constant pump 72 and an oil heat exchanger 74 with bypass valve.

In this context, it should also be stressed that in 5 shown circuit of the first embodiment, the pressure supplies of control part and lubricating oil circuit are separated. The circuit is start-stop-capable for corresponding vehicles with power interruption.

The high pressure circuit is a pressure sensor controlled accumulator charging system. The low pressure circuit has two by means of the spool valve 56 switchable pressure levels, typically quantitatively at about 1 to 2 bar in a first state and at about 3 to 5 bar in a second Status. The coupling cooling is an active cooling at typically 0 to 10 l / min.

In a variant of this first embodiment, the pressure supply can take place via a central pump. In particular, the pump may have a mechanical or an electromotive drive. In a further development of this first embodiment, a further proportional pressure reducing valve and a further control slide are additionally provided so that additional functionalities can be included. Examples of additional activities include: an air break for a rear spoiler, a parking lock with a holding magnet, an active control of a differential gear (torque vectoring) or the activation of an additional clutch for a hybrid drive system.

In the 6 is a circuit diagram of a second embodiment of a control device according to the invention 10 for a dual-clutch transmission with a partial transmission control according to the in the 4 shown embodiment shown. The first partial transmission control 52 was already in detail on the basis of 4 and the related description. The in the 4 only symbolized by a block further control device 48 for a further partial transmission is in the 6 explicitly as a second partial transmission control 54 , which with respect to their individual parts and their functionality analogous to the first partial transmission control 52 is shown.

In this second embodiment, a separate control valve according to the invention serves as a proportional cooling oil control valve for the separate control of the amount of cooling oil in the two clutches 56 , so that a fine dosage is possible. The high pressure circuit has an energy storage 58 with check valve and a pressure filter 62 with check valve. The control device 10 also has two controllable pressure relief valves 64 and a hydraulic mechanical pressure relief valve 66 on. Furthermore, in this second embodiment are also present: a filter 68 , a mechanical pressure relief valve 70 , a constant pump 72 and an oil heat exchanger 74 with bypass valve.

LIST OF REFERENCE NUMBERS

10

control device

12

spool

14

first pressure control line

16

second pressure control line

18

switching element

20

Shift control slide

22

High pressure circuit

24

Control pressure circuit

26

proportional solenoid

28

Return spring

30

spool

32

impact device

34

Control pressure chamber

36

Pressure reducing valve

38

Lubrication pressure circuit

40

Cooling oil pressure circuit

41

first branch point

42

further functional connection

43

second branch point

44

Clutch shift element

46

pressure sensor

47

third pressure control line

48

another control device for another partial transmission

50

further control function with switching pressure

52

first partial transmission control

54

second partial transmission control

56

proportional cooling oil control valve

58

Energy storage with check valve

60

Pressure reducing valve for control pressure

62

Pressure filter with check valve

64

controllable pressure relief valve

66

Hydraulic mechanical pressure relief valve

68

filter

70

mechanical pressure relief valve

72

fixed displacement pump

74

Oil heat exchanger with bypass valve

P

network pressure

PC

control pressure

T

tank connection

TL

Oil tank connection

A, B, C

working lines

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

• DE 10134115 A1 [0003]
• DE 10320524 A1 [0004]

Claims (10)

Control device ( 10 ) of a multi-speed transmission, with at least one first pressure control line ( 14 ) for controlling a switching element ( 18 ) to the gear setting and a second pressure control line ( 16 ) from the first pressure control line ( 14 ) is independent, and with at least one control slide ( 12 ), which has a plurality of control states, wherein the control slide ( 12 ) at least a first control valve for the first pressure control line ( 14 ) and a second control valve for the second pressure control line ( 16 ), which are simultaneously jointly controllable by means of an actuating element for the transition from one control state to another control state, characterized in that the first control valve and the second control valve have different way valve functions. Control device ( 10 ) according to claim 1, characterized in that the actuating element for controlling the spool comprises a magnet and hydraulically on the spool ( 12 ) and / or that the spool ( 12 ) a control piston ( 30 ) having a plurality of control edges. Control device ( 10 ) according to claim 1, characterized in that the first control valve of the spool ( 12 ) a 4-way 3-position proportional valve and the second control valve of the spool ( 12 ) is a 3-way 2-position proportional valve. Control device ( 10 ) according to claim 1, characterized by at least one shift control slide ( 20 ), wherein the second pressure control line ( 16 ) for controlling the Schaltsteuerschiebers ( 20 ) is designed. Control device ( 10 ) according to claim 4, characterized in that the shift control slide ( 20 ) has three 3-way 2-position proportional valves. Control device ( 10 ) according to claim 1, characterized by at least one proportional pressure reducing valve ( 36 ) with a leading control edge. Control device ( 10 ) according to claim 1, characterized in that the first pressure control line ( 14 ) and the second pressure control line ( 16 ) each have a branch point ( 41 . 43 ) in front of the spool ( 12 ), that a shift control spool ( 20 ), another shift control slide ( 20 ) and the spool ( 12 ) after the branch points ( 41 . 43 ) connected in parallel another control slide ( 12 ) are provided, wherein the further control slide ( 12 ) has a plurality of control states and at least one first control valve for the first pressure control line ( 14 ) and a second control valve for the second pressure control line ( 16 ), which are simultaneously jointly controllable by means of a further actuating element for the transition from one control state to another control state, and that the second pressure control line ( 16 ) of the spool ( 12 ) for controlling the Schaltsteuerschiebers ( 20 ) and the second pressure control line ( 16 ) of the further control slide ( 12 ) for controlling the further shift control slide ( 20 ) is designed. Control device ( 10 ) according to claim 1, characterized in that the first pressure control line ( 14 ) a branch point ( 41 ) in front of the spool ( 12 ) that a the spool ( 12 ) after the branch point ( 41 ) connected in parallel another control slide ( 12 ) is provided, wherein the further control slide ( 12 ) has a plurality of control states and at least one first control valve for the first pressure control line ( 14 ) and a second control valve for a third pressure control line ( 47 ), which are simultaneously jointly controllable by means of a further actuating element for the transition from one control state to another control state, and that the second pressure control line ( 16 ) of the spool ( 12 ) after the second control valve into the first pressure control line ( 14 ) and the third pressure control line ( 47 ) of the further control slide ( 12 ) for driving a further switching element ( 44 ) is designed. Control device ( 10 ) for a dual-clutch transmission, characterized by a control device ( 52 ) according to claim 7 for the first partial transmission and a further control device ( 54 ) according to claim 7 for the second partial transmission or a control device ( 52 ) according to claim 8 for the first partial transmission and a further control device ( 54 ) according to claim 8 for the second partial transmission. Multi-speed transmission, in particular for a vehicle, having at least one input shaft, an output shaft, at least a first gear train of a first gear and a second gear train of a second gear, with a different translation from the first gear train, and a switching element for activating at least one of the gear trains such, a torque can be transmitted from the at least one input shaft to the output shaft via the activated gear train, characterized by a Control device ( 10 ) for switching the transmission according to one of the preceding claims.

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