WO2004005759A1

WO2004005759A1 - System supplying operating means to starting elements in the form of hydrodynamic components, and transmission unit

Info

Publication number: WO2004005759A1
Application number: PCT/EP2003/007100
Authority: WO
Inventors: Rolf Brockmann
Original assignee: Voith Turbo Gmbh & Co. Kg
Priority date: 2002-07-09
Filing date: 2003-07-03
Publication date: 2004-01-15
Also published as: DE10231028A1; EP1520122A1

Abstract

The invention relates to a system supplying operating means to starting elements, comprising at least one pump wheel (6) and a turbine wheel (7), in transmission units (1) which are provided with a rotational speed/torque-transducing device (4) that is connected downstream of the starting element (2), a housing (5) which encloses the starting element (2) and the rotational speed/torque-transducing device (4), and a lubricating means and/or control means supply unit (10, 11) that is associated with the rotational speed/torque-transducing device and is provided with at least one source (13) of operating means. Said source (13) of operating means is coupled to a toroidal working chamber via a filling duct system comprising at least one filling duct (15). The invention is characterized by the fact that the operating means supply source (13, 16) of the inventive system (9) supplying the operating means to the starting element (2) is formed by the control means and/or lubricating means supply unit (10, 11) of the rotational speed/torque-transducing device (4), the bottom of the operating means being characterized by a level (17) having a specific height.

Description

Equipment supply system for start-up elements in the form of hydrodynamic components and gear unit

The invention relates to an equipment supply system for starting elements in the form of hydrodynamic components in equipment supply systems, in particular with the features from the preamble of claim 1; also a gear unit.

Gear units, in particular in the form of automated manual transmissions or automatic transmissions, are known in a large number of designs. As a rule, these comprise a starting element and a number of different speed / torque conversion devices connected downstream of this. The starting element is preferably designed in the form of a hydrodynamic component. This can be designed as a hydrodynamic speed / torque converter or hydrodynamic clutch. With the known

Transmission concept according to WO 00/55519, a hydrodynamic clutch is used as the starting element. This comprises a pump wheel and a turbine wheel, which together form a toroidal working space, and is free of a stator. The hydrodynamic clutch only serves to convert the speed, but not to convert the torque. The hydrodynamic coupling is assigned at least one operating medium supply system which comprises at least one operating medium source which is connected to the toroidal working space at least indirectly, that is to say via a filling duct system comprising at least one filling duct. A control and lubricant supply system is generally assigned to the speed / torque conversion devices in order to implement the switching functions in the rest of the transmission part, ie the speed / torque conversion devices, and to lubricate the individual components. In the simplest case, this includes an equipment sump arranged in the gear housing. Each of the two systems can be controlled separately. A major disadvantage is that each system in itself With regard to the overall resource supply system must be designed. Furthermore, the installation space required for the operating or lubricant sources and additional devices of both systems must be taken into account. In particular, the equipment supply system for the starting element is designed in accordance with the specific requirements for this, ie

Design with regard to the required filling quantity at the maximum transmissible torque, taking into account the circulation quantity and rapid filling time required for cooling purposes. Undesired filling states should be avoided, which is usually characterized by appropriate valve devices. The design effort for this system is therefore very high.

The invention is therefore based on the object

Resource supply system for start-up elements of gear units of the type mentioned at the outset in such a way that this makes it possible to ensure safe provision of operating resources, in particular an undesired filling of the hydrodynamic component can be ruled out with certainty. The design and control engineering effort for the overall system should be kept to a minimum.

The solution according to the invention is characterized by the features of claim 1. Advantageous refinements are given in the subclaims.

According to the invention, the resource supply system is designed in such a way that the resource supply system of a starting element in the form of the hydrodynamic component, in particular in the form of a hydrodynamic coupling, and the control and lubricant supply system of the speed / torque conversion devices arranged downstream of this provide a common resource for the resource and the necessary control or Use lubricants. The filling channel system of the hydrodynamic

Coupling also has at least one with the toroidal working space connected filling channel. This is coupled to the resource supply source. The coupling takes place directly or indirectly via connecting lines. In order to prevent undesired filling of the toroidal working space of the hydrodynamic component when the operating medium level of the operating medium source is tilted due to the

To prevent the change in the position of equipment from entering the filler channel system of the start-up element, the mouth between the equipment level and filler channel is used in the design and dimensioning of the gear unit as a function of the distance perpendicular to the axial section plane of the start-up element or the

Equipment supply system-oriented plane, which is characterized by the arrangement of the mouth, and a plane aligned parallel to it and oriented perpendicular to the axial section plane of the starting element or the gear unit and characterized by the position of the theoretical axis of rotation or tilting of the equipment mirror. The

The arrangement is arranged at a distance greater than or equal to H, which is based on the product of one hundredth of the maximum permissible gradient in percent, at which filling is still to be safely avoided, and compared to a theoretical level that characterizes the resource supply system in the zero position the

Distance between the mouth plane and the plane characterized in parallel by the position of the theoretical axis of rotation or tilt of the fill level is determined. This design avoids filling when driving on a slope with an angle of inclination up to the maximum inclination at which filling is to be excluded.

The control and / or lubricant sump of the control and / or lubricant supply system of the speed

/ Torque conversion device is arranged at least in the area of the axial extent of the speed / torque conversion device. Furthermore, by using the lubricant and control means sump already available for the speed / torque conversion devices as a source of operating resources, there is no need for any additional operating resources storage and the facilities associated with this, such as, for. B. filters, cooling devices. In addition, the height of the equipment level is limited only by the arrangement of additional control units in the housing and / or the dimensions of the power-transmitting elements in the radial direction, so that a very large reservoir for the equipment can be formed in the housing.

The "zero position" of the equipment level refers to the orientation in the installed position of the equipment supply system in the vehicle when viewed on the plane.

With regard to the design of the filling channel system, there are a number of

Possibilities. However, a symmetrical configuration of the filling channel system is preferably selected for the rapid filling of the starting element. This generally comprises at least one connecting line which opens into a central filling channel connected to the toroidal working space. The central filling channel is preferably annular, and in

Circumferential direction arranged around the theoretical axis of rotation of the hydrodynamic component. This means that regardless of the position of the hydrodynamic component, it can always be filled evenly in any operating state. The coupling of the filling channel with the operating medium storage takes place via at least one connecting line, wherein a division into two connecting partial lines is also preferred here, which then extend on both sides around at least a partial area of the central filling channel in the circumferential direction. Each of the connecting channels can be connected to the central filling channel for at least one or preferably a plurality of filling channel sub-lines. Versions with a large number of filling duct lines are preferred aimed at, the connection points between each filling duct and the central filling duct are preferably arranged at a uniform distance in the circumferential direction. This symmetrical design enables a faster filling to be achieved compared to a design with only a single coupling between the connecting line and the filling channel.

According to a particularly advantageous embodiment, when the connecting channel is divided into two connecting subchannels, they extend in the circumferential direction at least into the region of a horizontal plane which can be described by the theoretical axis of rotation of the hydrodynamic component and a perpendicular to the latter in the horizontal direction. The filling duct sub-lines then extend, starting from the plane that can be described by the theoretical axis of rotation of the hydrodynamic component and a plane perpendicular to it in the horizontal direction, preferably on both sides in the circumferential direction of the central filling duct. These run either in a plane perpendicular to the axial section plane or in a plane inclined to this.

In a further aspect of the invention, in particular for manufacturing reasons, the central filling channel and the

Filling duct lines are also arranged on one level. This makes it possible to use standardized components for couplings that are small in the axial direction for use in different equipment supply systems, which are characterized in particular by different distances L between the mouth levels and the axis of rotation or tilting of the equipment mirror, with only the connecting line corresponding components to the filling part channels for adaptation to the specific individual case, in particular for coupling to the operating medium source, must be exchanged accordingly. According to a particularly advantageous embodiment, at least part of the connecting line is also arranged in this plane.

The arrangement in a vertical and perpendicular to the axial section plane aligned level represents a particularly space-optimal arrangement. However, arrangements in different or inclined to the vertical direction are also conceivable. However, a design that is optimized in accordance with the component conditions in the axial direction with regard to the required installation space is always selected. The individual lines and channels -

Filling channel, connecting line and / or filling part channels - can either be integrated in the individual components or are formed by separate pipe elements.

The solution according to the invention is explained below with reference to figures.

It shows the following in detail:

Figures 1a and 1b illustrate two views of a particularly advantageous embodiment of a designed according to the invention

Equipment supply system for starting elements of a gear unit; Figure 2 illustrates an alternative way of arranging the

Resource source compared to Figure 1 in a schematically very simplified representation;

FIG. 3 illustrates a further embodiment of a filling channel system of an equipment supply system according to the invention; Figure 4 illustrates a further embodiment of an equipment supply system according to the invention.

FIGS. 1 a and 1 b illustrate in a schematically simplified representation, using two sectional representations, the basic structure of a gear unit 1 designed according to the invention with a resource supply system 9 according to the invention. The gear unit 1 comprises at least one starting element 2, which is in the form of a hydrodynamic clutch 3 or, not shown here, a hydrodynamic speed / torque converter is designed and this speed

/ Torque conversion devices 4, which can be designed in different ways. The speed / torque conversion devices 4 can be designed as mechanical switching stages or continuously variable transmission. Furthermore, the equipment supply system comprises a housing 5, which encloses the starting element 2 and the speed / torque conversion devices 4. The housing 5 can be made in one or more parts, the subdivision being possible both in the axial and in the vertical direction. The housing 5 is then made up of a large number of individual ones

Housing parts together. The starting element 2 in the form of the hydrodynamic clutch 3 comprises a pump wheel 6 and a turbine wheel 7, which together form a toroidal working space 8. The hydrodynamic clutch 3 is free of a stator. This is only used for torque transmission, with the possibility of speed conversion. In order to fill the toroidal working space 8 with equipment, the hydrodynamic coupling 3, i.e. The start-up element 2, as a rule, is assigned an operating material supply system 9. In order to implement the mode of operation of the speed / torque conversion device 4, a supply system for lubrication and / or control means 10 is also assigned to it. Control means the operating means which is used to actuate the actuating devices, for example the actuating devices for switching elements. The supply system 10 assigned to the speed / torque conversion device 4 comprises a lubricant and control agent sump 11 arranged in the housing 5, which functions as a lubricant and control agent source 12. The operating medium supply system 9 of the coupling 3 likewise comprises at least one operating medium source 13 and a filling channel system 14, coupled to this, comprising at least one filling channel 15, which is connected to the toroidal working space 8. According to the resource source 13 from the

Lubricant and control agent source 12, ie the lubricant and Control agent sump 11, formed. This is therefore also referred to as resource source 16 shared by starting element 2 and speed / torque conversion units 4. This is arranged in the housing 5 and is characterized in a neutral state, which characterizes the position of the resource supply system, in the form of the zero position by a resource level 17 of a certain height. When installing the gear unit 1 in vehicles, the plane spanned by the operating medium mirror 17 is generally aligned horizontally. Slopes relative to the horizontal are also possible to a small extent when installing the gear unit in an inclined position. The neutral state refers to the

Arrangement of the equipment level in a horizontal plane. When installed in the vehicle, this corresponds to the position of the vehicle on the plane. In order to avoid filling the hydrodynamic coupling 3, in particular the toroidal working space 8, the filling channel system 14 of the hydrodynamic coupling 3 is designed such that when the

Resource level 17 an automatic filling of the filling line 15 is reliably prevented. The filling channel 15, which is connected to the toroidal working space 8, is coupled to the operating material source 16 via at least one connecting line 18. The connection of the connecting line 18 to the filling channel 15 takes place as a function of the distance L of the filling channel 15 from the axis of rotation or tilting AK which characterizes the tilting of the operating medium level 17 when the position of the operating medium supply system 1, in particular the operating medium source 16, relative to the horizontal plane Mouth 27 of the connecting line 18 into the filling channel 15, the distance being measured in the axial direction in the installed position. The theoretical axis of rotation or tilting AK lies in the plane characterized by the equipment level 17 and is oriented perpendicular to the axial section plane of the starting element, i.e., viewed perpendicular to the transmission center axis in the installed position in the vehicle. The distance H of the mouth 27 in the vertical direction from the zero position of the

Resource supply system 1 through the resource mirror 17 Descriptive level is chosen such that it is greater than or equal to the quotient of the product of the maximum gradient in percent and the distance between the mouth of the connecting line 18 and the filling channel 15 and 100. This means that - regardless of the design of the entire filling duct system 14 - the mouth 27 of the connecting line to the filling duct 15 is arranged at or above this distance. For a maximum possible gradient or a maximum possible gradient of 25%, the distance H is always greater than or equal to 0.25 times the distance between the mouth 27 between the filling channel 15 and the connecting line 18 and the theoretical rotation or tilt axis A « amount in the axial direction. The distance measurement between the mouth of the connecting line 18 and the filling line 15 and the theoretical axis of rotation or tilting AK always takes place between two mutually parallel planes, the mouth plane and the plane in which the axis of rotation lies. These planes run perpendicular to the axial section plane.

In the embodiment shown in FIG. 1a, it was assumed in a particularly advantageous manner that the operating medium source 16 is arranged in the gear housing 5. However, solutions with an operating medium supply source arranged outside the housing 5 are also conceivable. In this case, the statements made apply analogously, although here, too, the distance analysis is always based on a plane analysis.

In the axial section shown in FIG. 1a, it can be seen that the operating medium source 16 is arranged in the housing part 5.3, which encloses the speed / torque conversion devices 3. The

Housing part 5.2 for the starting element, which forms the housing 5 with the housing part 5.3, is free of the operating medium source 16. However, there is also the possibility that the operating medium sump of the operating medium source 16 extends over both housing parts. Such an embodiment is shown schematically in a very simplified representation in FIG. 2, only the two housing parts 5.2 for the starting element and 5.3 for the speed / Torque conversion units 3, which are assembled to form the housing 5, can be seen. The equipment level 17 is also shown. In this case, the theoretical axis of rotation or tilting A _κ, viewed in the axial direction, is arranged at a distance from the starting element.

1 b shows a possible first embodiment of the filling channel system 14 according to the invention. From this it can be seen that a symmetrical structure is essentially sought for this. The filling channel system 14 comprises at least one connecting line 18, which is divided into two connecting partial lines 19 and 20, these connecting partial lines

19 and 20 are coupled to the central filler duct 15 via filler duct lines 21.1 to 21.3 and 22.1 to 22.3. The coupling between the connecting sub-lines 19 and 20 thus does not take place directly with the central filling duct line 15, but via the filling duct sub-lines. The central filling channel 15, which is coupled to the toroidal working space 8, is more advantageous here

Ring-shaped, i.e. this runs in the circumferential direction around the theoretical axis of rotation R of the start-up element 2. For uniform, rapid filling, the equipment is guided on both sides in the circumferential direction from the connecting line 18 and from this connecting connecting lines 19 and 20, which partially extend around the central filling channel 15 in the circumferential direction. The mouth 23 and 24 of the connecting sub-lines 19 and

20 into the filler duct lines 21.1 to 21.3 or 22.1 to 22.3 is subject to the geometric considerations already carried out, ie depending on the theoretical distance of the mouth plane from the plane aligned parallel to it and which can be described by the theoretical rotation or tilting axis A _κ . Depending on a maximum possible gradient at which automatic filling of the toroidal working space 8 is to be avoided, the height H for the arrangement of the mouth 23 or 24 relative to the plane which is characterized by the operating level 17 when the operating level 17 is zero is at least a hundredth of the slope in Percent times the distance L. This means that the mouths 23 and 24 are arranged at this height or above it.

For quick and uniform filling, the filling duct lines 21.1 to 21.3 and 22.1 to 22.3 are arranged in such a way that their mouths in the central

Filling channel 15, which are designated here by 25.1 to 25.3 and 26.1 to 26.3, are preferably arranged at substantially the same distance from one another in the circumferential direction on the central filling channel 15. The number of filler duct lines is not limited to the number shown here. According to the specific application requirements, in particular depending on the size of the hydrodynamic component in the form of the hydrodynamic coupling 3, this can also be increased or decreased. The embodiment of a section A-A shown in FIG. 1b according to FIG. 1a represents a particularly advantageous embodiment of the filling channel system 14. This is characterized by a completely symmetrical arrangement. The central filling channel

15 is arranged in a plane perpendicular to the axial section plane, as are the filler duct lines 21.1 to 21.3 and 22.1 to 22.3. The connecting line 18 and the connecting sub-lines 19 and 20 are characterized here by an at least partial alignment in the axial direction.

Compared to the embodiment shown in FIG. 1a, FIG. 3 illustrates only once again an embodiment of a filling duct system 14.3 which fulfills the minimum requirements, this only having a connecting line 18 which lead into at least one, but here shown two, filling duct sub-lines 21.13 and 21.33. The mouth is designated 23.3 here. It can also be seen here that the mouth 23.3 above the distance H, which results from the product of a hundredth of the maximum possible slope and the theoretical distance between the mouth 23.3 and the plane, which is defined by the theoretical axis of rotation or tilting A and a Perpendicular to this is writable, is characterized. FIG. 4 illustrates in a schematically simplified representation a possible modification of the filling channel system 14 according to the invention, in which the central filling channel 15.4 is not designed in a ring shape, ie closed in the circumferential direction, but only extends partially in the circumferential direction. The specific design is at the discretion of the responsible specialist.

LIST OF REFERENCE NUMBERS

1 gear unit 2 starting element

3 hydrodynamic coupling

4 speed / torque conversion device

5 housing

5.2, 5.3 housing part

6 impeller

7 turbine wheel

8 toroidal work space

9 Equipment supply system of the starting element

10 Lubricant and control agent supply system

11 Lubricant and control agent sump

12 Lubricant and control agent source

13 resource source

14 filling channel system

15 filling channel

16 common resource source used by starting element and speed / torque conversion device

17 equipment level

18 connecting line

19 connecting line

20 connecting line

21. ' I to 21.3 Filling duct part pipe

22.1 to 22.3 filling duct sub-line

23 mouth

24 mouth

25.1 to 25.3 Mouth of the filling duct sub-lines into the central filling duct 26.1 to 26.3 Mouth of the filling duct sub-lines into the central filling duct

27 mouth

A _κ theoretical rotation or tilt axis

H Distance between the level describing the operating level which is set by the operating level in the zero position and the mouth between the connecting line and filling line L Distance between the opening between filling line and

Connecting line in the axial direction from the plane oriented perpendicular to the axial section and which can be described by the position of the theoretical axis of rotation or tilting axis AK

Claims

claims

1. Equipment supply system (9) for starting elements in vehicles

(22) in the form of / hydrodynamic components (3), comprising at least one pump wheel (6) and one turbine wheel (7), which together form a toroidal working space (8), in gear units (1) with one connected to the starting element (2) .

Speed / torque conversion device (4), the starting element and speed / torque conversion device being enclosed by a housing (5) and one of the speed

/ Torque conversion device (4) associated lubrication and / or control agent supply unit (10, 11) 1.1. with at least one resource (13), which via a

Filling channel system (14), comprising at least one filling channel (15), which is coupled to the toroidal working space (8); characterized by the following features:

1.2 the resource supply source (13, 16) of the resource supply system (9) of the starting element (2) is formed by the control and / or lubricant supply source (10, 11) of the speed / torque conversion device (4), the

Equipment sump is characterized by an equipment level (17) of a certain height;

1.3 the mouth (27) of the connection between the equipment sump and the filling channel (15) is in one depending on the maximum permitted gradient, at which a filling should be safely excluded

Distance (H) in the vertical direction above a level that characterizes the equipment level (17) in the zero position of greater than or equal to the product of one hundredth of the desired maximum permissible gradient in percent and the distance between the mouth (27) between the filling channel (15) and Connection line (18) with the Resource source (16) and the theoretical axis of rotation or tilt of the resource mirror (17) arranged.

2. The equipment supply system (9) according to claim 1, characterized in that the equipment sump extends in the axial direction over the axial extent of the starting element (2) and the speed / torque conversion device (4).

3. The equipment supply system (9) according to claim 1, characterized in that the equipment sump of the equipment source (16) extends in the axial direction only in a region which is characterized by the axial extent of the speed / torque conversion device (4).

4. The equipment supply system (9) according to one of claims 1 to 3, characterized in that the equipment sump of the equipment source (16) is arranged outside the housing (5) of the equipment supply system surrounding the starting element (2) and the speed / torque conversion device.

5. resource supply system (9) according to one of claims 1 to 3, characterized in that the resource sump of the resource source (16) is arranged in the housing (5).

6. Resource supply system (9) according to claim 5, characterized in that the housing (5) is made in several parts in the axial direction, comprising at least a first housing part (5.1) which surrounds the starting element (2) in the circumferential direction, and a second housing part ( 5.2), which encloses the speed / torque conversion device (4) in the circumferential direction.

7. Resource supply system (9) according to one of claims 1 to 6, characterized by the following features:

7.1 the filling channel system (14) of the starting element (2) comprises a central filling channel (15) coupled to the toroidal working space (8); 7.2 the central filling channel (15) is connected to the operating material source (16) via at least one connecting line (18).

8. Resource supply system (9) according to claim 7, characterized in that the connecting line (18) with a plurality of filling duct lines (21.1-21.3; 22.1-22.3) of the central filling duct

(15) is connected.

9. Resource supply system (9) according to claim 8, characterized in that the mouths (25.1 - 25.3; 26.1 - 26.3) of the individual filling duct lines (21.1 - 21.3; 22.1 - 22.3) in the same

Are spaced from each other on the filling channel (15).

10. The equipment supply system (9) according to one of claims 7 to 9, characterized in that the connecting line (18) is formed by two interconnected connecting sub-lines (14, 20) which extend circumferentially on both sides around a partial area of the central filling channel (15). extend.

11. Resource supply system (9) according to one of claims 7 to 10, characterized in that the central filling channel (15) is designed as an annular channel which is arranged in the circumferential direction around the theoretical axis of rotation R of the starting element (2).

12. Resource supply system (9) according to one of claims 9 to 11, characterized in that the central filling channel (15) and the

Filling duct sub-lines (21.1 - 21.3, 22.1 - 22.3) in one level, which is aligned perpendicular to the axial section plane of the equipment supply system (9).

13. Resource supply system (9) according to claim 12, characterized in that the plane is formed in the vertical direction.

14. Resource supply system (9) according to one of claims 1 to 11, characterized in that the filling channel system (15) does not extend in the axial direction or only slightly over the axial extent of the starting element (2).

15.Gearbox assembly (1)

15.1 with a starting element (2) and this downstream speed / torque conversion devices (4); 15.2 with a resource supply system (9) for the starting element (2) according to one of claims 1 to 14.

16. Gear unit (1) according to claim 15, characterized in that the starting element (2) as a hydrodynamic clutch (3), comprising a primary blade wheel (6) and a secondary blade wheel (7), which together form a toroidal working space (8).