DE102018102690B4 - Hydraulic actuators - Google Patents

Abstract

Hydraulic power-on-demand actuators (90; 140) for a hybrid transmission, with gear actuators (81-84; 102-104) and actuating elements (86,87), which together with hydraulic valves (37,45,46) for hydraulic actuation the gear actuator (81-84; 102-104) and the actuating elements (86, 87) are combined in a mechatronic module (89), the mechatronic module (89) being a valve block (96) with the valves (37, 45, 46), characterized in that an electric pump actuator (20; 91) is connected to the valve block (96).

Description

The invention relates to a hydraulic actuator for a hybrid transmission, with gear actuators and actuators.

From the German patent specification DE 10 2016 217 580 B3 A hybrid transmission for a vehicle is known with a first input shaft for coupling to an internal combustion engine and with a second input shaft, the first and second input shafts being aligned coaxially with one another, with an output shaft, the output cells being arranged parallel to the first and second input shafts is, with an S1 double gear stage and with an S1 switching device, wherein the S1 double gear stage has a first and a second S1 gear stage and wherein the S1 switching device optionally the first input shaft via the first S1 gear stage or the first input shaft the second gear stage can be technically connected to the output shaft, with a S2 gear stage and with an S2 shifting device, the S2 shifting device optionally being able to connect the second input shaft with regard to the gearbox technology, with an S3 double gear stage and with an S3 shifting device, the S3 -Doppelgetriebes stage can connect a first and a second input shaft via the first S3 gear stage or the second input shaft via the second S3 gear stage with the output shaft, the second input shaft or the S3 dual gear stage being designed for coupling with an electric motor, with a double gearwheel with an S1 gear section and an S2 gear section, the S1 gear section forming part of the S1 double gear stage and the S2 gear section forming part of the S2 gear stage, and with a clutch for coupling the first input shaft to the internal combustion engine.

The object of the invention is to provide a functional hydraulic actuator system for a hybrid transmission, with gear actuators and actuating elements, which requires little space and is energy efficient.

The problem is solved in a hydraulic actuator system for a hybrid transmission with gear actuators and actuating elements in that the gear actuators and the actuating elements are combined in a mechatronic module together with hydraulic valves for hydraulically actuating the gear actuators and the actuating elements. The gear actuators include gear actuator pistons, for example, which are arranged in corresponding recesses in the mechatronic module. The actuating elements are preferably a parking lock piston for actuating a parking lock and a clutch piston for actuating a clutch. The hybrid transmission is preferably arranged in a hybrid drive train of a motor vehicle. The hybrid drive train is preferably a so-called dedicated hybrid drive. This means novel electrified concepts, which can also be summarized under the abbreviation DHT, whereby the capital letters DHT stand for the English terms Dedicated Hybrid Transmission. In such structures, the electrification is preferably not added as an add-on, but is advantageously taken into account in the construction of the vehicle transmission. In the hybrid transmission, it must be possible to insert several shift elements, such as gear actuators, and actuating elements, such as parking lock pistons and a clutch piston, in different combinations. A hydraulic actuator system with only a single electromotive pump actuator is provided for actuating a K0 clutch, the shifting elements and a parking lock. This actuator works according to the power-on-demand principle. Power-on-demand means that power is advantageously only tapped when the power is required to actuate the gear actuators and / or the actuating elements. Accordingly, the hydraulic actuator system can be referred to as a single-motor actuator system. The electromotive pump actuator comprises an electromotive fluid pump. The fluid pump is advantageously designed as a reversing pump, which means that the fluid pump can deliver a fluid in opposite directions. The fluid is preferably a hydraulic medium. The fluid pump is then also referred to as a hydraulic pump. The electromotive pump actuator is advantageously controlled by a local control device which is assigned to the pump actuator. The local control device is preferably an electronic control device. Therefore, the electromotive or electric pump actuator can also be referred to as an electronic pump actuator. The electromotive pump actuator is abbreviated to EPA. A logic valve designed as an AND valve is advantageously connected in parallel to the fluid pump of the electromotive pump actuator. The AND valve is also referred to as a two-pressure valve. The two-pressure valve has two connections which are connected to the fluid pump of the electromotive pump actuator. A third connection of the two-pressure valve is connected to a fluid reservoir. A fluidic clutch actuation device advantageously comprises a fluidic clutch slave cylinder. The clutch is advantageously of the normally closed type, that is, normally closed. When actuating, the normally closed clutch is pressed open with the fluidic clutch actuating device. The clutch is preferably an additional separating clutch in the hybrid drive train, which is also referred to as a KO clutch. A fluidic transmission actuation device comprises at least three gear actuators, each for actuating serve a switching element, and a gear actuator, which serves to actuate a parking lock, the gear actuators being preceded by a multiplexer arrangement. The multiplexer arrangement provides the advantage that significantly fewer solenoids are required for valve control.

A preferred exemplary embodiment of the hydraulic actuator system is characterized in that the mechatronic module comprises a valve block with the valves, which is preferably designed as a gear cover. The valve block is, for example, a valve plate. The valve block or the valve plate includes, for example, recesses for receiving the valves, in particular magnets, which serve to actuate the valves.

Another preferred exemplary embodiment of the hydraulic actuator system is characterized in that an electrical pump actuator is connected to the valve block. The electrical pump actuator is, for example, attached to the mechatronic module, in particular to the valve block. However, the electric pump actuator can also be integrated in the mechatronic module, in particular in the valve block.

Another preferred exemplary embodiment of the hydraulic actuator system is characterized in that the mechatronic module comprises a gear actuator block for the gear actuators. The gear shift block is, for example, a gear shift plate. The gear actuator block or the gear actuator plate is provided, for example, with recesses which serve to receive gear actuator pistons of the gear actuators.

Another preferred exemplary embodiment of the hydraulic actuator system is characterized in that a sensor module is integrated in the gear actuator block. The sensor module includes, for example, displacement sensors which are assigned to the clutch, the parking lock and / or the gear actuators. A connector belonging to the sensor module is advantageously arranged in the valve block.

The gear actuator block advantageously faces a transmission interior of the hybrid transmission. The valve block is advantageously facing away from the transmission interior of the hybrid transmission. An intermediate plate is advantageously arranged between the valve block and the gear actuator block.

Another preferred exemplary embodiment of the hydraulic actuator system is characterized in that the mechatronic module comprises a clutch piston for actuating a clutch. The clutch is preferably a dry-running friction clutch, in particular a K0 clutch of the hybrid transmission.

Another preferred exemplary embodiment of the hydraulic actuator system is characterized in that the clutch piston is arranged in one or the gear actuator block. The clutch piston is advantageously received in a corresponding recess in the gear actuator block, in particular the gear actuator plate.

Another preferred exemplary embodiment of the hydraulic actuator system is characterized in that the mechatronic module comprises a parking lock piston for actuating a parking lock. The parking lock is actuated by the parking lock piston via a parking lock actuator.

Another preferred exemplary embodiment of the hydraulic actuator system is characterized in that the parking lock piston is arranged perpendicular to one or the gear actuator block. The parking lock piston is arranged, for example, in a corresponding recess in the gear selector block, in particular the gear selector plate. The term vertical refers to the level of the gear actuator plate in connection with the parking lock piston. The parking lock piston is thus arranged perpendicular to a plane in which the gear actuator plate extends. The gear actuators or gear actuator pistons are advantageously arranged in the plane of the gear actuator plate or parallel to the plane of the gear actuator plate.

Another preferred exemplary embodiment of the hydraulic actuator system is characterized in that the parking lock piston is arranged both in the valve block and in the gear actuator block and is guided in a cylinder which breaks through the separation point between the valve block and the gear actuator block. This simplifies the operation of the parking lock.

The invention optionally also relates to a valve block, a gear actuator block, an intermediate plate, an actuating element, in particular a parking lock piston, a clutch piston or a Gear actuator, and / or a hydraulic valve for a hydraulic actuator described above. The parts mentioned can be traded separately.

The invention further relates to a method for fluidically actuating a K0 clutch and a transmission in a hybrid drive train for changing driving conditions in a hybrid-driven motor vehicle, which comprises an electric motor, with a fluid arrangement described above.

The invention optionally also relates to a computer program product with program code means for carrying out the method described above if the computer program product runs on a processing device or is stored on a computer-readable data carrier. The processing device is, for example, a control device which is used to control the electromotive pump actuator and the valves in the hydraulic actuator system. The control device can be a central control device or a local control device that is assigned to the electromotive pump actuator or the hydraulic actuator system.

The invention optionally also relates to a hybrid drive train with a hydraulic actuator described above.

The invention optionally also relates to a motor vehicle with such a hybrid drive train.

• 1 eine vereinfachte Darstellung eines Hybridantriebsstrangs mit einem Elektromotor, einem Getriebe und einer Kupplung im Längsschnitt;
• 2 eine Fluidanordnung mit einer hydraulischen Aktorik und einer Multiplex-Anordnung;
• 3 eine perspektivische Darstellung einer hydraulischen Aktorik für ein Hybridgetriebe, wie es in 1 dargestellt ist;
• 4 eine schematische Darstellung der hydraulischen Aktorik aus 3 in der Draufsicht auf ein Mechatronikmodul;
• 5 die hydraulische Aktorik von innen betrachtet, also von einer Getriebeseite aus;
• 6 die hydraulische Aktorik von einer Außenseite betrachtet;
• 7 eine ähnliche hydraulische Aktorik wie in 6 mit einem integrierten elektrischen Pumpenaktor; und
• 8 die Darstellung eines Parksperrenkolbens im Schnitt durch das Mechatronikmodul.

Further advantages, features and details of the invention emerge from the following description, in which various exemplary embodiments are described in detail with reference to the drawing. Show it:

• 1 a simplified representation of a hybrid drive train with an electric motor, a transmission and a clutch in longitudinal section;
• 2 a fluid arrangement with a hydraulic actuator and a multiplex arrangement;
• 3 a perspective view of a hydraulic actuator for a hybrid transmission, as in 1 is shown;
• 4 a schematic representation of the hydraulic actuator system 3 in the top view of a mechatronic module;
• 5 the hydraulic actuators viewed from the inside, i.e. from a transmission side;
• 6 the hydraulic actuator viewed from the outside;
• 7 a similar hydraulic actuator as in 6 with an integrated electric pump actuator; and
• 8th the representation of a parking lock piston in section through the mechatronic module.

In 1 is a hybrid powertrain 50 of a motor vehicle with a hybrid drive shown in simplified longitudinal section. The hybrid powertrain 50 comprises a primary drive (not shown) and a secondary drive with an electric motor 2 , For example, an internal combustion engine serves as the primary drive. A clutch 1 is between the internal combustion engine and a transmission 51 arranged. With the reference symbol 3 is a connection of the electric motor 2 to the transmission 51 indicated.

The gear 51 includes an input shaft 4 , The input shaft 4 is non-rotatable with the coupling 1 connected. With the clutch 1 it is a separating clutch, which is also referred to as a K0 clutch. The K0 -Coupling 1 is advantageously combined with a vibration damper and / or a dual mass flywheel.

The gear 51 further comprises a first intermediate shaft 5 and a second intermediate shaft 6 , The first intermediate wave 5 is coaxial with the input shaft 4 of the transmission 51 arranged. The second intermediate wave 6 is parallel to the first intermediate shaft 5 arranged. The gear 51 also includes an output shaft 7 with a differential gear.

The gear 51 also includes three switching elements 8th . 9 . 10 , which are designed as sliding sleeves. The switching elements 8th to 10 can be inserted in different combinations. When K0 clutch 1 is closed, the gearbox can 51 with the switching elements 8th to 10 Different combinations of six gears for the internal combustion engine and two gears for the electric motor 2 inlaid become. When shifting the internal combustion engine gears, the torque can be generated via the electric motor 2 are supported, and when switching the electric motor gears, the drive torque support can take place via the internal combustion engine.

The first switching element designed as a sliding sleeve 8th enables sliding sleeve positions S HL. The second switching element designed as a sliding sleeve 9 enables sliding sleeve positions S 2-5. The third switching element designed as a sliding sleeve 10 enables sliding sleeve positions S 3-6.

The circuit diagram for the transmission 51 with the K0 clutch closed looks like this: Operating mode / gear Sliding sleeve positions S HL S 3-6 S 2-5 Stand loading 1 R N N Stand loading 2 L N N Neutral N N N small E-gear E1 N N R small E-gear E1 & combustion engine gear 1 R N R small E-gear E1 & combustion engine gear 2 L N R small E-gear E1 & combustion engine gear 3 N R R Internal combustion engine gear 3 N R N large E-gear E2 & combustion engine gear 3 N R L large E-gear E2 & combustion engine gear 4 R N L large E-gear E2 & combustion engine gear 5 L N L large E-gear E2 & combustion engine gear 6 N L L Internal combustion engine gear 6 N L N

The designations S H-L; S 2-5 and S 3-6 denote the three sliding sleeves in the gearbox. R, N and L stand for the three positions of the respective sliding sleeve. R stands for right inserted. N stands for neutral (middle position). L stands for left inserted.

From the three sliding sleeves, each with three positions, there are twenty-seven possible combinations for the different switching positions, but not all of them make sense. The combinations that can be used with the clutch closed (sensible) and the associated operating states (gears) are listed in the table.

When the K0 clutch is open, further electric motor gears are available, but these are difficult to integrate into a fluid shift sequence. The K0 - The clutch only needs to be opened to start the engine when the motor vehicle is moving from the drive train or to support a start. However, the latter is only necessary in extremely rare emergency situations. In the transmission example shown, it must normally be possible to start electrically, since there is no internal combustion engine reverse gear.

Most circuits can be carried out with the K0 clutch closed. Before laying out a switching element 8th to 10 is achieved by suitable torque control of the two drive machines, i.e. the internal combustion engine and the electric motor 2 , the amount of torque on the switching element 8th to 10 minimized. Before inserting a switching element 8th to 10 is the amount of the differential speed on the switching element by adjusting the speed of the drive machine not connected to the output 8th to 10 minimized. Alternatively, the K0 clutch can also be opened in a similar manner to an automated or automatic manual transmission before switching internal combustion engine gears.

In 2 is an embodiment of a fluid arrangement with an electromotive pump actuator 20 shown. The electromotive pump actuator 20 , also abbreviated EPA, includes a pump 21 by an actuator motor 22 is driven. The pump 21 is in as a reversing pump opposite delivery directions, such as arrowheads in a circle symbol that the pump 21 symbolizes, is indicated.

With the actuator motor 22 it is an electric motor E. The actuator motor 22 is a local control unit 23 assigned. The capital letters LCU stand for the English terms Local Control Unit. The control unit 23 is with pressure sensors 24 combined, as indicated by letter p. A two-pressure valve 25 is parallel to the pump 21 connected. The two-pressure valve 25 includes two connections for the pump 21 , With a third connection is the two-pressure valve 25 connected to a fluid reservoir.

Solid lines symbolize in 2 Fluid lines, especially hydraulic lines. Dashed lines symbolize in 2 Control lines. Valves, in particular solenoid valves, are controlled in the fluid arrangement via the control lines. Dash-dotted or dash-dotted lines symbolize in 2 Sensor cables.

A clutch subsystem 30 includes a fluidic clutch actuator 60 for a K0 clutch 31. The fluidic clutch actuator 60 includes a slave cylinder 32 with a slave piston. The slave piston is a slave displacement sensor 33 assigned.

The electromotive pump actuator 20 is between the fluidic clutch actuator 60 and a fluidic transmission actuator 70 arranged.

In 2 is a changeover valve 37 between the electromotive pump actuator 20 , the fluidic clutch actuator 60 and the fluidic transmission actuator 70 arranged. The fluidic gear actuator 70 represents a transmission subsystem 40 represents.

At the in 2 The fluid arrangement shown includes the fluidic transmission actuation device 70 three gear adjusters 81 to 83 , The gangsters 81 to 83 include equal area gear actuator pistons 43 with displacement sensors. The gangsters 81 to 83 is a gearshift valve designed as a switching valve 45 upstream. The gangsters 81 to 83 are arranged in a gang plate tower. The three gear actuators 81 to 83 are used to operate sliding sleeves. With 84 is called a parking lock actuator.

The fluid arrangement can be operated by switching the two-pressure valve 25 of the electromotive pump actuator 20 can be switched from clutch actuation to transmission actuation. When switching the two-pressure valve 25 must be an unwanted actuation of the transmission subsystem 40 be safely avoided.

At the in 2 The fluid arrangement shown is a multiplexer arrangement 85 with a multiplexer switching valve 46 and a gear selector valve 45 between the electromotive pump actuator 20 and the gear actuators 81 to 84 used. The multiplexer arrangement 85 provides the advantage that significantly fewer solenoids are required for valve control.

In the 3 to 6 is a mechatronic module 89 shown in different views. The mechatronic module 89 includes hydraulic actuators 90 , in which a fluid arrangement, as in 2 is shown for actuating a hybrid transmission, as in 1 is shown, is integrated. On for actuating gear actuators 102 to 104 , a clutch 92 and a parking lock actuator 93 required hydraulic pressure is provided by an electric pump actuator 91 provided.

The electric pump actuator 91 corresponds, for example, to the electrical pump actuator 20 in 2 , With the clutch 92 it is for example a K0 coupling, which in 1 with 1 and in 2 is designated by 31. The parking lock actuator 93 is used to operate a (in 3 Parking lock in a hybrid drive train of a motor vehicle, which is not shown in 1 is designated by 50.

The electric pump actuator 91 is with hydraulic lines 94 . 95 on a valve block 96 connected. The valve block 96 is as a valve plate 97 with a sealing flange 98 executed.

The mechatronic module 89 includes in addition to the valve block 96 a gear shift block 100 , The gear shift block 100 is as a gear plate 101 with gear actuators 102 . 103 . 104 executed. The gangsters 102 to 104 each include a shift rod 105 . 106 . 107 , The gangsters 102 to 104 correspond, for example, to the gear actuators 81 to 83 in 2 ,

The coupling 92 is via a clutch lever 108 through a clutch piston 109 actuated. The clutch piston 109 is, at least in part, in the gear selector block 100 added. In the gear shift block 100 are also unspecified gear actuator pistons of the gear actuator 102 to 104 added. In addition, there is a sensor module 110 in the gear shift block 100 integrated.

The parking lock actuator 93 includes a parking lock actuator 111 who, for example, the gang controller 84 in 2 replaced. A parking lock piston 112 is, at least in part, in the gear selector block 100 added. The parking lock piston 112 or the parking lock operator 111 extends or extend perpendicular to the gear actuator plate 101 , The shift rods 105 to 107 extend parallel to each other in the plane of the gear actuator plate 101 and thus perpendicular to the parking lock piston 112 ,

The one for actuating the clutch 92 , the gangster 102 to 104 and the parking lock required hydraulic, electrical and electronic components are advantageous in whole or in part in the mechatronic module 89 integrated. The hydraulic medium or the required hydraulic pressure are in the mechatronic module 89 via hydraulic valves, for example in a multiplexer arrangement, as described in 2 is designated 85, are arranged hydraulically to the clutch piston 109 , the parking lock piston 112 or to one of the gangsters 102 to 104 guided. The mechatronic module 89 advantageously also includes a hydraulic medium reservoir with hydraulic medium, in particular hydraulic fluid, which is independent of a gearbox sump of the hybrid transmission.

A first assembly of the mechatronic module 89 includes, for example, the electric pump actuator 91 with a hydraulic pump, a pump motor, a control unit, a passive logic valve, two pressure sensors and the aforementioned hydraulic medium reservoir. A second assembly of the mechatronic module 89 includes, for example, the plates designed as labyrinth plates 97 and 101 , an intermediate plate 130 with valves in the valve plate 97 , the gear actuator piston, the parking lock piston 112 and the clutch piston 109 , The clutch piston 109 acts against the clutch lever 108 and is possibly combined with an intermediate tappet. The intermediate tappet is advantageously used to seal the interior of the transmission to form a clutch bell.

In 4 is the mechatronic module 89 shown in a top view. Below in the top view shown corresponds in one with the mechatronic module 89 equipped motor vehicle in front. On the left in the top view shown, the clutch or the engine is arranged in the vehicle, as if one were standing in front of the vehicle and looking into the engine compartment. In 4 you can see that the intermediate plate 130 between the sealing flange 98 the valve plate 97 and the gear actuator plate 101 is arranged. The sealing flange 98 the valve plate 97 is used advantageously to represent a gear cover for the hybrid transmission. The valve plate 97 is then arranged outside, based on the hybrid transmission.

In 4 you can see that the sensor module 110 into the gear plate 101 is integrated while a connector 121 for the sensor module 110 in the valve plate 97 is arranged. The sensor module 110 includes all the necessary sensors, such as the Nehmerweg sensor 33 in 2 , In addition, speed sensors for the transmission input shaft and the transmission output shaft of the hybrid transmission can optionally be installed in the sensor module 110 be arranged.

In 4 is a low pressure connection through a circle 123 to the valve plate 97 indicated. Through more circles 124 . 125 high-pressure connections are indicated, which, for example, the hydraulic lines in 3 correspond.

Through larger circles 127 to 129 Valve magnets are indicated, which are in the valve plate 97 are integrated. The valve magnet 127 belongs to the one in 2 with 45 designated gear actuator valve. The valve magnet 128 belongs to the one in 2 with 46 designated multiplexer switching valve. The valve magnet 129 belongs to the one in 2 designated 37 changeover valve.

The valve magnets 127 to 129 are in the valve plate 97 advantageously arranged outside the transmission and thus experience a lower heat load. In addition, this arrangement allows the electrical connections of the valves and the sensor system either to the local control unit of the electrical pump actuator via cables or other connections, such as lead frames 91 be performed.

In the 4 Parking lock (not shown) is actuated, for example, via a pawl which engages in a parking lock wheel. The parking lock wheel is arranged on a differential, for example. Alternatively, the pawl of the parking lock can engage a wheel on a gear shaft.

The parking lock piston 112 runs advantageously through the parting plane between the valve plate 97 and the gear actuator plate 101 , This can advantageously an additional cylinder housing for the parking lock piston 112 omitted.

In 8th you can see that the parking lock piston 112 in a corresponding recess in the valve plate 97 is guided to move back and forth. A piston rod of the parking lock actuator 111 extends from the parking lock piston 112 in 8th to the left through a lid 144 therethrough. The lid 144 is with the help of seals 145 . 146 in the gear plate 101 attached.

The design of the parking lock piston 112 is advantageous so that the piston seal of the parking lock piston 112 the parting plane between the two plates 97 . 101 with the intermediate plate 130 does not exceed. This can cause undesirable damage to the piston seal of the parking lock piston 112 be prevented. The parking lock piston 112 is advantageous only in the area of the valve plate 97 moved back and forth in the recess.

Alternatively, a pressed-in and sealed sleeve can also be provided as the piston track. The pressure supply for actuating the parking lock piston 112 includes at two print delivery points 148 . 149 two hydraulic channels. The pressure is supplied at the pressure transfer points 148 . 149 advantageous on the back, that is, on the valve plate side, through an oblique hole from the labyrinth of the valve plate 97 , Only a flat sealing plane on the panels is advantageous 97 . 101 attached, whereby the post-processing is simplified, for example, by a manufacturing process realized by casting.

The gear actuator pistons can either, as in the 3 to 6 shown in the shift rods 105 to 107 intervene and form the assembly interface here. Alternatively, the shift rods 105 to 107 in the mechatronic module 89 be stored, advantageously together with the gear actuator pistons. Then the engagement of the shift forks in the sliding sleeves of the hybrid transmission is the assembly interface.

The connection between the electrical pump actuator 91 and the mechatronic module 89 preferably takes place via a direct connection, that is to say via sealing surfaces between the valve plate 97 and the hydraulic pump of the electric pump actuator 91 , The electric pump actuator 91 is, at least transport-proof, with the mechatronic module 89 connected, so that a full acceptance of the system and a transport in the filled state is possible. A permanent connection of the electric pump actuator 91 can be done using additional fastenings on the gearbox housing.

In 5 is the mechatronic module 89 shown from the transmission side. On the transmission side of the mechatronic module 89 are the gangsters 102 to 104 with the shift rods 105 to 107 arranged. In addition, you can see the clutch piston on the transmission side 109 and the parking lock piston 112 ,

In 6 is the mechatronic module 89 shown from the outside. There are electrical connections on the outside 134 from the electric pump actuator 91 to the connector 121 of the sensor module and to the valve solenoids 127 to 129 indicated. In addition, there is the hydraulic connection between the electric pump actuator 91 and the valve plate 97 through the connections 123 to 125 in 6 indicated.

In 7 is a hydraulic actuator 140 shown that of the hydraulic actuators 90 out 6 is very similar. The same reference numerals are used to designate the same or similar parts. To avoid repetitions, reference is made to the previous description of 6 directed.

At the in 7 hydraulic actuator shown 140 is the electric pump actuator 91 in the valve block 96 integrated. The hydraulic pump of the electric pump actuator 91 is advantageously integrated into the gear actuator plate. So the local control unit of the electric pump actuator 91 thermally preferably be arranged outside the transmission interior.

LIST OF REFERENCE NUMBERS

1

K0 clutch

2

electric motor

3

Connection of the electric motor to the transmission

4

input shaft

5

Intermediate shaft 1

6

Intermediate shaft 2

7

Output shaft with differential gear

8th

Switching element (S H-L)

9

Switching element (S 2-5)

10

Switching element (S 3-6)

20

electromotive pump actuator

21

pump

22

actuator motor

23

control unit

24

pressure sensors

25

Two pressure valve

30

Clutch subsystem

31

K0 clutch

32

slave cylinder

33

Slave travel sensor 37 switching valve

40

Transmission subsystem

43

DC-surface gear actuator piston

45

Gear selector valve

46

Multiplexer switching valve

50

Hybrid powertrain

51

transmission

60

fluidic clutch actuator

70

fluidic gear actuator

81

gear actuator

82

gear actuator

83

gear actuator

84

gear actuator

85

Multiplexer arrangement

86

actuator

87

actuator

89

Mechatronics module

90

hydraulic actuators

91

electric pump actuator

92

clutch

93

Parksperrenaktor

94

hydraulic line

95

hydraulic line

96

manifold

97

valve plate

98

sealing flange

100

Gear actuator block

101

Gear actuator plate

102

gear actuator

103

gear actuator

104

gear actuator

105

shift rod

106

shift rod

107

shift rod

108

clutch lever

109

clutch piston

110

sensor module

111

Parking brake actuator

112

Parking lock piston

121

plug

123

Low pressure connection

124

High pressure connection

125

High pressure connection

127

valve solenoid

128

valve solenoid

129

valve solenoid

130

intermediate plate

134

electrical connection

140

hydraulic actuators

144

cover

145

poetry

146

poetry

148

Pressure transition point

149

Pressure transition point

Claims (8)

Hydraulic power-on-demand actuators (90; 140) for a hybrid transmission, with gear actuators (81-84; 102-104) and actuating elements (86,87), which together with hydraulic valves (37,45,46) for hydraulic actuation the gear actuator (81-84; 102-104) and the actuating elements (86, 87) are combined in a mechatronic module (89), the mechatronic module (89) being a valve block (96) designed as a gear cover with the valves (37, 45, 46), characterized in that an electrical pump actuator (20; 91) is connected to the valve block (96). Hydraulic actuator system according to the preceding claim, characterized in that the mechatronic module (89) comprises a gear actuator block (100) for the gear actuators (81-84,102-104). Hydraulic actuators after Claim 2 , characterized in that a sensor module (110) is integrated in the gear actuator block (100). Hydraulic actuator system according to one of the preceding claims, characterized in that the mechatronic module (89) comprises a clutch piston (109) for actuating a clutch (1; 31; 92). Hydraulic actuators after Claim 4 , characterized in that the clutch piston (109) is arranged in one or the gear actuator block (100). Hydraulic actuator system according to one of the preceding claims, characterized in that the mechatronic module (89) comprises a parking lock piston (112) for actuating a parking lock. Hydraulic actuators after Claim 6 , characterized in that the parking lock piston (112) is arranged perpendicular to one or the gear actuator block (100). Hydraulic actuators after Claim 6 or 7 , characterized in that the parking lock piston (112) is arranged both in the valve block (96) and in the gear actuator block (100) and is guided in a cylinder which breaks through the separation point between the valve block (96) and the gear actuator block (100).

Images