HK1058956B - Transmission module - Google Patents

Description

The invention relates to a gearbox system, in particular with the characteristics of the general concept of claim 1.

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This solution already allows the assembly of different transmission concepts for different applications, but the implementation requires vertically separate units, e.g. planetary wheel planes and the retarder planes. Furthermore, to achieve the necessary electrical connections, e.g. the electrical connection between sensors and the ECU and the ECU and the actuators, a large number of connections and line runs in the above units must be provided. There is no separate testability of the base gear unit alone and the sensor technology alone. A drive cover is always required for each unit, as it also contains part of the sensors or other functional elements.

The purpose of the invention is therefore to create a gearbox system comprising a number of gear units, in particular a compound gearbox unit, in such a way that, using the same components, gear units for a wide variety of applications can be produced with little effort and with a high degree of standardization. The individual gearbox unit of the gearbox should be mechanically convertible for other applications in a simple way without the need to adapt sensors, actuators, ECUs, wiring. Prefabrication, i.e. the number of production steps to final inspection and the performance of maintenance should be reduced to simple human use.

The solution of the invention is characterised by the features of claim 1, and the advantages are given in the subclaims.

In the case of a gearbox system according to the invention for the production of multiple gearboxes modified for different applications, each with one gear input and at least one gear output, all gearboxes have in common a basic gear unit which is identical for all gearboxes and includes an input and an output.

The basic gearbox comprises a mechanical gearbox which includes the power transmission components, e.g. planetary wheel sets, etc., and which is enclosed by a gearbox part. The mechanical gearbox and the housing part form a basic gearbox which is lockable by a locking unit comprising at least one additional gearbox part. The basic gearbox comprises, in addition to the power transmission components of the other, at least one logic unit, a power supply unit and/or other functional units which may be referred to together as a control or supply mode contract. The logic unit and the control unit are required to be integrated into the basic power transmission components, which are integrated under a control or control mode, but also within the control/power supply system, and are also included in the basic power supply components, which are integrated under a control or control mode contract. This basic gearbox is also included in the control/power supply system, but is also included in the operating system, and is also included in the control/power supply unit, which is integrated under a control/power supply mode contract.

The term logic unit refers to the whole of the electronic control apparatus, in particular the ECU, the sensors and the control devices, and the connection to them; the term control and supply unit refers to the hydraulic control and components of the control and/or lubrication system.

The hydraulic supply chain, i.e. the oil-suction, gear pump, filter, lubrication, oil-filling mechanisms for the transformer and retarder, heat exchangers, control units, etc., and closed circuits can thus be formed in the control and supply module separately from the power-transmitting elements in the basic gearbox. The solution according to the invention results in a spatial summary of individual components according to their function, on the one hand the basic logic and control and supply units and on the other hand the power-carrying elements while simultaneously forming a horizontal boundary line between these elements. The arrangement of several tasks can be solved.When the logic unit and the control-and-supply unit are combined in one module each, they can be combined in a simple way in any way they wish, which makes it possible to create a series in a simple way, whereby the basic gear unit can be built separately and the control-and-supply module and the logic module can be built on the stock, and the gear unit, in particular a compound gear unit, can be supplemented at a possible later date with the adjustment and auxiliary units as required by the application.This unique testability is achieved by separating the power-driven and non-power-driven functions into horizontally separated units in the basic gearbox, with the only remaining test for leakage being the final test when the entire combination gearbox is assembled as required by the customer.

A basic gearbox is a basic gearbox which, in combination with different drive units and drives, can be used for a variety of differently designed gearboxes for different applications, with modifications only to the final part and the drive unit, in particular the choice of drive elements.

The basic gear unit comprises the power transmission elements of the mechanical gear unit and the housing, which can be combined with the corresponding control and supply modules. The power-transmitting elements are all the power-transmitting elements, including those which vary the speed/torque. These include, for example, in the case of Ravigneaux gearboxes, the planetary gearboxes and the switching elements required to achieve different gears. The logic module consists of a logic unit, a control block (control sliders, magnetic valves), the control and supply module of the hydraulic control and supply units, gear pumps and filters. The logic unit or units usually comprise an electronic control unit. The control and supply unit comprises a hydraulic or pneumatic control unit. The control and supply unit comprises at least one other electronic control device of the control unit.'control unit' means the control unit or a unit of electrical and electronic components which supplies and processes the dimensions required to control the gearbox unit and which produces the adjustment dimensions from the input dimensions according to the desired control operation. The control unit normally comprises a number of electrical and electronic components which are allocated and linked to each other according to the processing of the input dimensions. Preferably, a number of the electronic and/or electrical components are placed together on at least one support panel and are enclosed by a control unit housing. The electronic control unit comprises devices to be installed in addition to the control unit and means of copying the control unit with the control unit,Since actuators can also be part of hydraulic control devices, these actuators can be connected to both the electronic and hydraulic control devices. Hydraulic control devices are the hydraulic connections between the unit sizes and/or the electronic control device and the actuators, which are normally hydraulically pressurised and include the actuator-like elements and their couplings with the actuator.The controls shall be so designed that they are capable of operating the individual gears.

'Fluidity supply unit' means a device which supplies the hydrodynamic gear unit with power, lubricants for the mechanical gear unit and bearings, controls for the control of the stationary equipment in the transmission system, including, for example, pumps and filter devices integrated in the supply system; 'functional unit' means a device which is assigned to the other two units, the logic unit or the supply unit, but which does not primarily perform functions only in these units, e.g. refrigeration, etc.

In another aspect of the invention, the mechanical transmission unit, which forms the basic gear unit, includes at least transmission elements with which at least three gear ratios can be achieved. To meet different requirements, the transmission unit can be integrated with reversing ratios and/or centre and angular drives. To achieve a combined gear with at least four gears, a reversing rate in the form of a group switching rate is advantageously applied to the combined gear in the terminating unit. This group switching rate allows the operation of the transmission configuration thus created as a 4-, 3- and 5-speed, 6-speed gear, in parallel with the control of the individual gear ratios.

In a particularly advantageous design of the basic gear unit and thus the mechanical gear unit, it comprises two planetary wheel levels, both of which are coupled to each other, and use a common element, preferably in the form of the step, which at the same time forms the output of the basic gear unit. When the termination unit is formed as a simple cover element without the possibility of integration of other power transmission elements, the combination gear is designed as a 3-speed gear unit. The integration of the auxiliary gear in the termination unit allows, in combination with the two planetary gear levels of the basic gear unit, a very compact overall gear unit for application examples in which the operating range is to be covered over at least four to six gears.

The means of achieving a centre or angular drive are either integrated in the transmission unit alone in the three-speed version or, if a downshift is provided, in the transmission unit in a secondary mode, whereby the drive of the angular drive is the drive of the transmission unit and thus the output.

There are a number of possibilities for the spatial arrangement of the individual elements in the logic and control-and-supply module, in particular the spatial arrangement of the electronic control and hydraulic control may be carried out according to one of the following: (a) arrangement of hydraulic control and electronic control or electronic control in horizontal direction next to each other and in vertical direction considered in a plane, i.e. without a head;

Preferably, each of the control units is assigned its own corresponding supporting element, which can be connected to each other to form a supporting element, so that a unit comprising at least the electronic control unit and the hydraulic control unit is formed. This can then be easily removed from the control and supply module in its entirety. Another possibility is to place both the electronic control unit of the electronic control unit and the hydraulic control unit on a common central supporting element and form a single supporting element. In both cases, the entire component is referred to as the supporting element or supporting elements, the hydraulic control unit and the electronic control unit as a control platform, which is also a tradable unit.

Another aspect of the invention is the arrangement of logic units, control and supply units and functional units in mounted position at a height which is within the range of the height of the control, lubricant or control valve in the transmission. Another aspect of the invention is the arrangement of a housing to the electronic control device, which is preferably tightly closed against hydraulic fluid, e.g. oil and/or another liquid. The control device can then be placed directly in the control, control and/or lubricant valve of the transmission unit. This also makes it possible to position the electrical and electronic components of the control at least indirectly by means of the cooling, control and/or lubricant valve in the control or control unit, or in the control unit, or in the control unit.However, the oil-tight design of the housing requires that the electrical connection between the control unit and the sensors of the control unit and the actuators to be controlled by the control unit to operate the individual elements of the gearbox, for example to operate the gear change of the control elements or the positioning of the control elements and/or to specify input sizes by a higher control unit, be designed accordingly or to be docked only to an oil tank, for example.

The arrangement of the control unit in a mounting position in the lower part of the gearbox and the provision of a corresponding housing make it possible to place the sensors for the detection of the individual dimensions describing at least indirectly the operation of the individual elements of the gearbox at a given time also in the area below the gearbox centre line corresponding to the axis of rotation, and thus to perform the entire control unit including sensors and actuators in a relatively compact manner.

The transmission is created by using the basic gearbox by combining it with different drive units, for example in the form of a hydrodynamic gear unit and the possibility of different layouts of the locking units. e individual gear units ordered in this way differ only in the layout of the locking units and the locking units, which is essential for the application case and the requirements linked to the application case, and possibly the logic and control and supply units.

The transmission component, which forms the power transmission and the basic transmission unit, and the control and supply module which can be combined with it, constitute a basic gearbox for a gearbox, whereby the individual units - the basic transmission and the logic and control and supply module - can be manufactured separately and only need to be combined as modules. In particular, the easy interchangeability possible due to the horizontal separation between the power-producing parts in the basic transmission and the control and supply units is of great importance.In addition, it is also possible to integrate the drive unit into the drive unit already from a base gear unit, i.e. in particular for cases where the same drive unit or the same configuration of the drive unit can be used. In this case, the different drive units are followed up by the corresponding drive unit or gear group in the form of a decision on the adjustment of the drive unit, in particular as a win or a win.

The solution of the invention is illustrated below by figures which show in detail: Figure 1 illustrates in a simplified schematic the basic principle of using a basic gearbox in a compound gearbox with a drive unit in the form of a transformer, the basic gearbox and a logic control and supply module in a compact design;Figure 2 illustrates an advantageous design of a basic gearbox with a logic control and supply module for use in a platform design concept;Figures 3a to 3 illustrate individual gearbox applications with identical start and shutdown configurations and different drive units;Figures 4a to 4a illustrate simplified diagrams for a simple gearbox layout in accordance with Figures 5a to 6a;Figures 3a to 3a illustrate three simple and simplified gearbox layouts;Figures 3a to 7a illustrate three simple and simplified gearbox layouts in accordance with Figures 5a to 6a;Figures 3a and 3a illustrate three simple and simplified gearbox layouts;Figures 3a and 3a illustrate three simple and simplified gearbox layouts in accordance with Figures 5a to 7a;Figures 3a and 3b illustrate three simple and simplified gearbox layouts.

The transmission units are preferably compound transmissions 2, comprising at least one mechanical gear unit 3 coupled to a drive unit 51 in the form of a hydrodynamic gear unit or a hydrostatic gear unit 4. The basic version of the combination 50 of a basic gear unit 5 and a drive unit 51 in the form of a hydrodynamic gear unit 4 is a version for the realisation of at least three gears. The associated gear units 3 and hydrodynamic gear units 4 or 5 are combined into a mechanical gear unit 51 and comprise a mechanical gear unit.The basic gear unit 5 has an output 6 which can be coupled to the power transmission elements which can be combined with the basic gear unit 5 to provide additional functions. According to the invention, all logic units and control and supply units 9 and the associated functional units 10 are integrated, for example, in the form of a logic and control or supply module 53 in the basic gear unit 5. These together with the basic gear unit 5 form a platform gear unit 50. The arrangement of the logic units 8, the control and supply units 9 and the transmission units 10 assigned to these functions takes place within the power transmission elements 3 of the basic gear unit. The essential elements below the theoretical transition are located in a mechanical connection and are connected to the input and output of the basic gear unit 6 by means of a mechanical connection and a transmission line.The logic units 8 include functional elements for control and control tasks. The logic or control units 8 include, for example, a control device 12 assigned to gear unit 1 or to the combined gear unit 2, a control device 13 comprising at least one control device, whereby the term control device 13 is to be understood as at least one main control device, e.g. ECU, while the term control device also takes into account the input and output of the control units 12 and their connections to the actuators 13 and their connections to the sensors and the control plugs.The control unit 12 shall comprise at least one electronic control unit 15. The hydraulic control unit 14 shall be part of the control unit and the supply unit 9. The electronic control unit 15 shall comprise an electronic control unit 16 which is a unit of electrical and electronic components which are fed and processed in the unit 1 to the dimensions required to control the transmission unit 1, in particular the combined transmission unit 2, and which output from the input dimensions set-up sizes according to the desired control operation. The electronic control unit 16 shall normally comprise a number of electrical and electronic components which are arranged and rearranged according to the requirements of the transmission unit 1 or the transmission unit.The electronic control unit 15 includes, in addition to the control unit, 16 devices for measuring input dimensions and means of connecting the devices to the control unit 16, another device for connecting to the corresponding control elements for operating the control units, the individual gear units of the transmission unit, in particular the mechanical drive unit 3 and the hydrodynamic drive unit 4 for changing the functional and/or operational control. Since the devices in the form of actuators are also components of the hydraulic control unit 14, the hydraulic control means can be assigned to the hydraulic control unit as well as to the electronic control unit 14.The term hydraulic control device 14 refers to the hydraulic connections between the input-size and/or electronic control device 15 and the actuators, which are usually hydraulically pressurised and act as actuators and their coupling to the actuators, essentially covering all the actuators necessary to operate or adjust the individual gears on gear unit 1 and/or the combination gear unit 2.

The control and supply unit 9 also includes the elements which, for example, provide and supply pressure equipment to the gearbox's position devices. These include, for example, pumps 19 and connecting lines to guide the pressure equipment. Functional units 10 include elements which are assigned to the individual units logic unit 8 or supply unit 9 and which have an additional function, not primarily underlying only these units, or an independent function. These include, for example, filter devices 20, heat exchangers 21.

According to the invention, the elements of logic unit 8, control and supply unit 9 and functional units 10 are arranged separately from the power transmission elements of the transmission unit, i.e. the mechanical and hydraulic drive, preferably below the symmetry axis SG of the power transmission elements or always at a certain distance a from the outer circumference 11 of the power transmission elements.

The basic transmission unit 5 thus formed, which is designed to achieve at least three gear ratios, constitutes a separate basic transmission unit which can be tested separately as a separate unit, without the need for a tight closure of the housing part 23. The basic principle of the solution of the invention is to group the individual units by their basic function, in particular the power units and the logic and supply units together, while forming a horizontal boundary between them.Since the number and length of the wires required for electrical coupling is considerably less than conventional solutions, the possibility of individually matching the control unit to the respective gear unit is considerably reduced by integrating the electronic control unit 15 into the housing 22 of the transmission unit without requiring reprogramming of the control unit when replacing essential power-transferring elements of the overall gear unit 1 and thus changing the configuration of the gear unit. The clear allocation of the electronic control unit and the electronic control unit allows for a simplification of the production logistics.Control hydraulics, actuators and sensors of gear unit 1, where the control device 15 can be adjusted to the transmission-specific tolerances already during the test procedure.

With regard to the spatial arrangement of hydraulic control 14 and electronic control 15 there are a number of possibilities not described in detail here. (a) an arrangement of hydraulic control 14 and electronic control 15 or at least electronic control 16 in a horizontal direction adjacent to each other and in a vertical direction, in a plane, i.e. without any displacement;

Preferably, each of the control devices - electronic control 16 or electronic control 15 and hydraulic control 14 - not shown here, is assigned a corresponding support element, which can be connected to each other to form a support device, so that a unit comprising at least the electronic control 16 and the hydraulic control 14 can be imaged, which can then be easily removed from the transmission unit in its entirety.

Figure 2 shows in a simplified schematic a possible version of a basic gear unit 5.2. This includes a mechanical gear unit 3.2 enclosed by a housing 23. The housing 23 is designed to accommodate at least the mechanical gear unit 3.2 but preferably also the additional components 55 not shown here in the form of a hydraulic or hydrodynamic gear unit 4. The mechanical gear unit 3.2 includes in the case shown two planetary gear sets, a first planetary gear set 24 and a second planetary gear set 25. Each planetary gear set includes a solar wheel, the planetary gear set 24 is 24.1 solars, the planetary gear set 25 is 25.1, the planetary gear set 24 is 25.1, and the planetary gear set 24 is a bicycle.The planetary wheels 24.2 and 25.2 of the individual planetary wheel sets 24 and 25 are mechanically coupled to each other, here via a common gearbox 26. The gearbox 26 forms the output 6.2 of the base gearbox 5.2 and at the same time the resulting platform gearbox 50.2. Both solar wheels are connected via a shaft to the gearbox input of the gearbox unit 1 not shown here. The waves are here respectively designated by 27 and 28. The waves 27 and 28 form the inputs of the base gearbox 5.The transmission units are at least indirectly coupled to the transmission input of the total gear unit or are accordingly based on an element of the total gear unit. Furthermore, the power transmission elements, in particular the planetary gear sets 24 and 25, the logic unit 8.2, the control and supply unit 9.2 and the functional units 10.2 are integrated below the basic gear unit 5.2 and can be soluble connected to the housing of the basic gear unit 5.2.

Figures 3a to 3e illustrate the implementation of different total gear units 1.3a to 1.3e from a basic gear unit as shown in Figure 2 and logic units 8 and control and supply units 9, preferably combined in the control and supply module 53. Each of the gear units 1.3a to 1.3e comprises a basic gear unit 5.2 which is preferably built and dimensioned in the same way for all the different gear units 1.3a to 1.3e, as shown for example in Figure 2. Furthermore, the gear unit 1.3a to 1.3e has an additional gear unit in the form of a power supply unit3 in the form of a hydrodynamic gear unit from 1.3a to 4.3e, each of which comprises a different number of hydrodynamic gear units/dimensions, preferably for all the different gear units 1.3a to 1.3e. However, the number of power units/dimensions is also the same for all the gear units 1.3a to 53.3a, with the possibility of adding a power supply unit3 in the form of a hydrodynamic gear unit to 1.3a to 53.3e, which is also suitable for the number of hydrodynamic gear units.

In another aspect of the invention, as shown in Figures 3a to 3e, the control and supply module 53 composed of the control and supply units 9 and logic units 8 can be executed in the same way for the gear units of 5 different gear units 1 and adapted to different operating requirements only by replacing the additional units 55 in the form of the connection units 52 and/or the additional units 50 in the form of the termination elements.

In addition, the platform gearbox 50 may also be designed to include the basic gear unit 5.2 and a control and supply module 53, although this module is not necessarily to be understood as a modular unit but as a variety of individual elements that are more or less connected to each other. The so-called basic gear unit then also includes a housing or housing part 54 which may be designed to include a drive unit. The drive unit may be interchangeable at will. The only decisive factor is that the conditions are given on the part of the housing 54 to include the additional drive unit 55 in the form of the drive unit 53.

In the example shown in Figure 3a, the overall gear unit 1.3a, in addition to the platform gear unit 50 comprises a base gear unit 5.2 and integrated control and supply module 45, a hydrodynamic speed and torque converter 29 as the starting unit 52 and an additional gear unit 56 of the downlink stage 30.3a in the form of a group switching gear, comprising a planetary gear 32 whose input 33 is connected to the output 6 of the base gear unit 5. The input 33 is formed, for example, by 32.4 of the planetary gear set 32et.where the front wheel 35 is combed with the drive 34 of the planetary gear set 32. In this case, the planetary gear set 32 acts as the reverse gear set 30.3a, which is formed by the hollow wheel 32.3 and the front wheel drive 35 concentrically arranged to this front wheel 35 or the shaft coupled with this as the drive 37.3a of the gear unit 1.3. The integration of the reverse gear 30.3a and the reverse gear 37.3a takes place in a separate housing part 38 which is combined with the housing 23 of the basic gear unit 5.3 to form the total drive 22. The housing part 38 is composed of 8 logic units, 8 power supply units and 9 functional units which are 10, 45 and 45 control mode units combined in the basic gear unit and 5.2 or whose housing 23 is integrated.

Figure 3b illustrates another possible version of a complete gear unit 1.3b from a platform gear 50 of a basic gear unit 5.2 and an additional gear unit 55 in the form of a hydrodynamic gear unit 4.3b, in which the gear output 39 is formed by an angular gear unit 40. The basic design of hydrodynamic gear unit 4.3b and basic gear unit 5.2 is the same as that already described in Figures 3a and 2 respectively. This gear unit, depending on the control of the individual gear elements, is a version that can achieve at least six gears.The same reference symbols are used for the same elements. This is made as a planetary wheel set 32, whose input 33 is formed from the step 32.4 of the planetary wheel set and whose downwind or outlet 36 is formed from the hollow wheel 32.3. The outlet 36 is coupled with the angular drive 40. The angular drive 40 is made as a cone wheel stage, comprising a first cone wheel 41, which is connected to the output 36 of the after-switch stage 30.3b or 34 of the planetary wheel set 32, in particular the hollow wheel 32.3 and preferably forms a structural unit, and a second cone wheel 42, which rotates with the output of the downwind drive 37.3b, which at the same time is the output of the gear unit 1.The reverse gear 30.3b and the angle drive 40 are again in a housing part, here integrated into housing part 43.

Figure 3c shows a version of a total gear unit 1.3c with a basic gear unit 5.2, an additional gear unit 55 in the form of a hydrodynamic gear unit 4.3c and an additional gear unit 56 in the form of a downshift gear 30.3c, comprising a planetary gearbox 32 analogous to the versions shown in Figures 3a and 3b, but with the gearbox 37.3c of the gear unit 1.3c coaxially attached to the gearbox of the gear unit 1.3c. In this case, the drive is directly from the gearbox 32.3 of the gear unit 32 without additional means, with the gearbox 32.3 for this purpose being connected to a shaft that drives the gearbox 44. The gearbox in Figure 37c is configured accordingly as a 4- or 4-axle gearbox with a 6-speed gearbox, depending on the individual gearbox.

Figure 3d shows, on the other hand, a total gear unit 1.3d, which is designed as a three-speed version and consists only of mechanical gear units of the basic gear unit 5.2 and the additional gear unit 55 in the form of the drive unit 51, including a hydrodynamic gear unit 4.3d.

Figure 3e shows a version of a total gear unit 1.3e, comprising a basic gear unit 5.2, a hydrodynamic gear unit 4.3e and a second additional gear unit 56, comprising a 30.3e reverse gear, preferably analogue to those shown in Figures 3a to 3c. The output 34 of the planetary gear set 32, which is formed by the hollow shaft 32.3, functions simultaneously as a first drive 37.31e, with the drive 37.31e coaxially located to the input gear unit 46 while driven via a steering gear coupled to the hollow shaft 32.3, in the simplest case an additional front axle 47.

Figures 3a to 3e illustrate possible versions of individual units of a complete gearbox with a high degree of standardization based on the gearbox system. Other versions are also conceivable and are at the discretion of the competent professional. The versions shown in Figures 3a to 3e are preferred versions, which are characterized by a high degree of standardization, a low component requirement and structural requirements in terms of the function to be achieved.

The transmission configuration according to Figure 3a is used for the vehicle configurations shown in Figures 4a to 4d below. The design of a centre-driven overall gearbox 1.3a according to Figure 3a, i.e. the arrangement of the gearbox concentrically to the centre axis of the planetary wheel set 32 of the rear axle, is used preferably for transverse arrangements of the drive unit 48.4a, 48.4b, 48.4c in the vehicle. The overall gearbox 1.3a is coaxally arranged to the drive unit 48.4a according to Figures 4a to 4a. The rear axle is driven in a vertical direction, for example, with a single axle or a tricycle, to a central axle or to a tricycle axle. The drive can be either directed or directed through a vertical axle, with a vertical axle or a tricycle axle, with a vertical axle or a tricycle axle.

Figure 4c shows a version of a bus drive system with a transverse drive unit 48.4c, a total gear unit 1.3a, with the centre drive vertical but the axle driven centrally by a side drive, e.g. front wheel drive.

Figure 4d illustrates a design similar to Figure 4c, but using a portal axis as the axis.

Figures 5a to 5d illustrate versions of bus drive systems, where the drive unit 48.5a to 48.5d is also transverse. The transmission unit 1.3b is coaxially arranged to the transmission unit 48.5a to 48.5d. The drive to the axle is by coupling the drive of the overall transmission unit 1.3b to the centre. Angle drives of 60 and 65° are used. Figure 5a illustrates a right-hand drive, while Figure 5b illustrates a transverse drive for use in countries with left-hand drive. Figures 5c and 5d illustrate analogue versions for right-hand drive and left-hand drive respectively, but the portal is operated as a downward-facing axle and is not driven from the rear axle but from the rear axle.

Figures 6a to 6c illustrate applications for all-wheel drive versions as shown in Figures 3c and 3d. Figure 6a shows in a simplified schematic a standard bus drive in which the drive unit 48.6a and the all-wheel drive unit 1.3c and 1.3d are arranged along the direction of travel. The axle drive is essentially in the centre of the axle, with the drive 37 also being arranged along the axle. Figure 6b illustrates a version as shown in Figure 6a, but with the axle drive not being centered but for a portal moving to either side. Both versions are suitable for right-hand drive, where the portal according to Figure 6a is also suitable for left-hand traffic.

Figure 7 shows a side view of a vehicle showing the possible application of a total transmission design as shown in Figure 3d. This is particularly suitable for all-wheel drive, with the combustion engine 48.7 and the transmission unit arranged longitudinally in the direction of the vehicle and the drive on the axles being centrally realised.

List of reference marks

The following shall be indicated in the table of the main components of the control unit: 1.2, 1.3a, 1.3b, 1.3c, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 1.3d, 3.3d, 3.3d, 3.3d, 3.3d, 3.3d, 3.3d, 3.3d, 3.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.3d, 4.8d, 4.8d, 5.8d, 5.8d, 5.8d, 5.8d, 5.8d, 5.8d, 5.8d, 5.8d, 5.8d, 6.8d, 6.8d, 6.8d, 6.8d, 7.8d, 7.8d, 7.8d, 7.8d, 8.8d, 8.8d, 8.8d, 8.8d, 8.8d, 8.8d, 8.8d, 8.8d, 8.8d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d, 8.d,

Claims (14)

1. A modular system for transmissions for producing a plurality of transmission modules modified for different purposes, comprising transmission input and a transmission output, characterized by the following features:

   1.1 with a mechanical transmission part (3; 3.2; 3.3a; 3.3b; 3.3c; 3.3 d) which comprises power-transferring elements and is arranged in a housing part (54) and forms with the same a basic transmission module (5; 5.2) comprising at least one input and one output;

   1.2 with a logic unit (8; 8.2) which is integrated in the basic transmission module (5; 5.2) beneath the theoretical connecting line between input and output or is flange-mounted on the housing part (54); characterized by the following features:

   1.3 with a control and supply unit (9; 9.2) which is integrated in the basic transmission module (5; 5.2), and

   1.4 the logic unit (8; 8.2) comprises sensors, electronic control devices (15, 16) and actuators;

   1.5 the arrangement of logic and control and supply unit occurs beneath the power-transferring elements of the basic transmission module (5; 5.2);

   1.6 the logic and control and supply unit (8; 8.2; 9; 9.2) are combined into a combined logic/control and supply module (53);

   1.7 the basic transmission module (5; 5.2) is combined with the additional module which comprises a starting unit (51), with the starting unit (51) being provided upstream of the mechanical transmission part (3; 3.2; 3.3a; 3.3b; 3.3c; 3.3 d) and is arranged in the housing of the basic transmission module (5; 5.2).
2. A modular system for a transmission according to claim 1, characterized in that the arrangement of logic and control and supply unit (8; 8.2; 9; 9.2) in the basic transmission module (5; 5.2) occurs at a certain minimum distance to the outside circumference (11) of the power-transferring transmission elements beneath a theoretical connecting axis between the input and the output of the basic transmission module (5; 5.2) and beneath the power-transferring transmission elements.
3. A modular system for a transmission according to one of the claims 1 or 2, characterized in that the arrangement of logic and control and supply unit (8; 8.2; 9; 9.2) occurs in the region of the height of the level of an operating medium sump settling in the housing part (34) of the basic transmission module.
4. A modular system for a transmission according to one of the claims 1 to 3, characterized in that the starting unit (52) and the basic transmission module (5; 5.2) are flange-mounted on each other.
5. A modular system for a transmission according to one of the claims 1 to 4, characterized in that the basic transmission module can be combined with a further second additional module (56) which comprises a closing unit (43).
6. A modular system for a transmission according to claim 5, characterized in that the closing unit (43) which can be coupled with the basic transmission module (5; 5.2) comprises a further partial housing element which can be joined with the housing part (54) of the basic transmission module (5; 5.2).
7. A modular system for a transmission according to claim 6, characterized in that the closing unit (43) is configured as a transmission housing cover.
8. A modular system for a transmission according to claim 6 or 7, characterized in that the closing unit (43) comprises a rear-mounted step (30.3a; 30.3b; 30.3c; 30.3d) or an infinitely variable transmission part which are coupled with an output of the basic transmission module (5; 5.2) and form the transmission output of the respective transmission module and are enclosed by the partial housing element of the closing unit.
9. A modular system for a transmission according to claim 8, characterized in that the rear-mounted step (30.3a; 30.3b; 30.3c; 30.3d) is formed by a range change unit.
10. A modular system for a transmission according to one of the claims 5 to 9, characterized in that the closing unit (43) comprises a right-angle gear drive.
11. A modular system for a transmission according to one of the claims 1 to 9, characterized in that the starting unit (51) comprises a starting element which is configured as a hydrodynamic coupling or a hydrodynamic speed/torque converter (29).
12. A modular system for a transmission according to one of the claims 1 to 9, characterized in that the starting unit (51) comprises a starting element which is configured as a mechanical coupling.
13. A modular system for a transmission according to claim 1, comprising a common module, which is based on a plurality of overall transmission units, in the form of a platform transmission (50), comprising a basic transmission module (5; 5.2) and a logic, control and supply module integrated in the same.
14. A modular system for a transmission according to one of the claims 1 to 13, characterized by the following features:

    14.1 the mechanical transmission part (3; 3.2; 3.3a; 3.3b; 3.3c; 3.3 d) comprises two planet wheel sets (24, 25), each comprising a sun wheel (24.1, 25.1), a ring gear (24.3, 25.3), planet wheels (24.2, 25.2) and a frame (26);

    14.2 the frames of the two planet wheel sets (24, 25) are coupled with each other;

    14.3 the sun wheels (25.1, 24.1) of the planet wheel sets (24, 25) are coupled with the input of the basic transmission module (5, 5.2).