DE2722891A1 - CONVERTER TRANSMISSION - Google Patents

Description

Kehl D-7300 Esslir.ger. Dipl.-Ing. Hartmut Kehl

Scratch Mülbergerstrasse 65 Dipl.-Ing. Volkhard Kratzsch

~~ Telephone Stuttgart 0711-359992 Deutsche Bank Esslingen 210906

cable «kehlpatent» esslingennackar Postscheckamt Stuttgart 10004-701

Chase Manhattan Bank New York

VARIABLE KINETIC DRIVES LIMITED 17. lülai 1977 Pillory Green, Napton, Rugby Warwickshire / England anuial file 2230 Uandlar gear

The invention relates to a lilandlergetrieba with a torque converter with a drive shaft and a connected therewith * a pump wheel, with a driven turbine wheel, which is connected to the drive side of the Ulandlerga drive is connected to a rotating Zaischenturbinenrad, with a first gear, Via which the Zuiischenturbinenrad is connected to the pump wheel, and with a second gear, via which the first gearbox with the output string of the tUandler gearbox connected is.

Such an ffiandler gear is in GB-PS 1 347 045 described · The well-known converter transmission has a drive shaft, a pump wheel, which is connected to the drive shaft is connected, an output shaft, an output turbine wheel, which is connected to the output shaft, a rotating Intermediate turbine wheel, which is arranged in the flow path between the pump wheel and the driven turbine wheel, a first gear, which connects the intermediate turbine wheel to the impeller, and a second gear, which is connected on the one hand to the first gear and on the other hand to the output shaft and a stationary component.

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In the known LiJandlergetrieba, the first transmission can transfer a torque from the feed turbine wheel to the The impeller is transmitted, while the torque boosted by the second gear is transmitted from the intermediate turbine wheel via the first gear is transmitted to the output shaft, and wherein the reaction torque is applied to the stationary component is transmitted so that the intermediate turbine wheel is always rotates when the impeller rotates, in the same direction of rotation, but at a speed in the lower speed range, the output shaft with a speed that is lower than the speed of the impeller, and at a speed that is in the upper speed range of the Output shaft is at a speed that is higher than that of the Puropsnrades.

It is often necessary to provide devices with the help of which a reversal of the direction of rotation of the output wave is possible. In addition, facilities are often required by means of which between a torque converter and the output shaft a reduction in speed is possible, so that the machine of the output shaft with a increased speed can be driven and a so-called "engine braking" is enabled, for example, if a Converter is used in a motor vehicle and this is going down a slope. The speed reduction can also serve to generate increased torque on the output shaft, for example when driving a caravan or a boat a very steep one Up the slope.

The previously for a direction of rotation reversal and a speed— Reduction proposed facilities are generally very extensive and complicated.

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The invention is based on the object, an improved one Lüandler gear to specify, uielches devices for reversing the direction of rotation and to enable Einar lilotorbremsung includes. In particular, it is also sought to design the converter transmission in such a way that it is particularly suitable for use in connection with those (small) vehicles that have a transverse engine and where the Front or rear-wheel drive via the Zuiischentuelle or a Transmission takes place.

According to the invention, this object is achieved by means of a transmission gear solved with the features of claim 1.

In a preferred embodiment of the invention, the converter transmission has the following features:

The second transmission has a clutch source, which the first and second gear connects and is mounted parallel to a shaft that serves as the output shaft of the UJandler gear and in the fixed housing of the same is stored. A gear wheel seated on the coupling shaft meshes with a gear wheel running freely on the output shaft and connects a further gear wheel freely on the output shaft running gear by means of a freewheel, wherein the further gear meshes with a gear which is firmly on the output component of the Ulandler gear is seated. This further Zahnred can either be coupled directly to the output shaft his or a further gear, so that there is a reduction gear or a gear for reversing the direction of rotation.

The invention is explained in more detail below with reference to preferred exemplary embodiments in conjunction with drawings. Show it:

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Fig. 1 shows a cross section through a Ulandler gear

according to the invention;

Fig. 2 shows a cross section through a modified one

Embodiment of a Ulandler transmission according to the invention, through the points ABCD- in Fig. 3;

Fig. 3,

4 and 6 end views to illustrate construction details;

FIG. 5 is a side view of the construction according to FIG. 4,

Fig. 7 is a schematic representation of a

Hydraulic circuit for the ll / andler gearbox according to Fig. 1 * and

Fig. 8 and 9 details the Ulandler transmission according to Fig.

The Ulandler transmission according to FIG. 1 has a drive shaft 10 and an output shaft 21. A pump wheel 1 of a rotary- torque converter is via a rotatable impeller cover 11 and a gear 5 for a starter is connected to the drive shaft 10. The torque or flow converter is as multi-stage converter formed with an intermediate turbine wheel TC, which is mounted on a disk 73. the The output shaft 21 is an intermediate shaft which carries a gear 84 which drives the axle drive 85, 87, 88 of a motor vehicle with a transverse engine.

A driven turbine wheel, hereinafter referred to as turbine wheel T for short A hub 7A is mounted, which is keyed to a hollow shaft 7 on the output side. A guide wheel R is connected to a hollow shaft 7 via a freewheel 36

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-JBr-

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concentric sleeve 22 connected, uelche on the housing 6 of the Ulandler gear by means of a plate 22A and by means of Screws 31 is attached, the plate 22A being keyed onto the sleeve 22. Slide 7 and slide 22 are arranged coaxially to one another and surround a coupling tube 9. The connecting tube 21, which iuia said as The intermediate trap is used, is mounted in the housing 6 by means of bearings 21A, 21B in such a way that its axis of rotation is parallel to the The axis of rotation of the coupling element 9 runs in the axial direction Direction relative to the Strömuiandler is offset.

On a planetary gear carrier 4, the axes 8 of planets are wheels 12 mounted. The planetary gears 12 mesh with one Ring gear 24 and a sun gear 13. These parts form the first (planetary) gear. The disc 73 is on the Planet carrier 4 attached. The ring gear 24 is mounted on the clutch shaft 9. The sun gear 13 is of the Punipen wheel cover 11 worn.

A gear 14 at the rear - in Fig. 1 left - end of the coupling shaft 9 meshes with a gear 15, which the output shaft 21 surrounds coaxially. A freewheel 37 transmits the drive forces from gear 15 to a hub 40A a gear 40 which meshes with a gear 41 which is mounted on the hollow shaft 7 on the outlet side of the flow regulator. The gear 40 is with its hub 40A arranged coaxially to the output shaft 21, the hub 40A being located between the gear 15 and the output shaft 21 is located. The parts mentioned form a second gear. The connection with a stationary component to take over the reaction forces results from the support of the Gears in the stationary housing 6 of the Ufandler gear.

The gear 40 is integral with a sun gear 95 its hub 4OA formed. The sun gear 95 meshes with it

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Planatan wheels 96 dia mounted on a planatan wheel carrier 97 are. The Plsneten wheels 96 mesh farnar with planet wheels 98, di9 are also mounted on the planet gear carrier 97 Furthermore, the planet gears 98 mesh with a sun gear 99 and a ring gear 100. The sun gear 99 has a sleeve. shaped extension 49 which is integrally formed with a brake drum 101. Dor planetary gear carrier 97 is attached to a flange 96A of the output source 21. the Planet gears 95 and 98, the sun gear 95 and the ring gear 100 form a third gear in the form of a planetary gear used to reverse the direction of rotation, which is arranged coaxially to the Abtrisbsuielle 21.

The brake drum 101 carries a set of clutch plates 102 and has a recess in which a piston 103 is located. Farner is wrapped around the brake drum 101 by a brake band 104. The clutch plates 102 cooperate a second set of coupling plates 105 together, bleach be carried by a hub 106 attached to the Abtriabsiualle 21 is mounted. The Kohlrad 100 is supported by a brake band 107 embraced. The planetary gear carrier 97 is provided with teeth 82 which are in the park position of the transmission prevents the vehicle from rolling when the engine is switched off. By means of a pump 77, 78, the piston 103 UI under pressure can be supplied in order to close the clutch 102, 105. (The oil can also be used in brake cylinders 108, 109 in Fig. 7.) The actuation of the clutch 102, 105 results in the direct gear, i. a gear ratio of 1: 1 between the sun gear 95 (driven by the turbine wheel T) and the output shaft 21 is switched on. Tightening the strap 107 with The help of the brake cylinder 109 leads to a reversal of the direction of rotation of the output shaft 21 via the planetary gear. That Tightening of the brake band 104 with the aid of the brake cylinder

709849 / 09B1

leads to a reduction of the Speed for the output shaft 21.

In the modified embodiment according to FIGS. 2-6, one planetary gear of the UJandler gear according to FIG. 1 is supplemented by a further intermediate shaft 66 and associated gear parts. Oie ZwischentitelIe 90 is in the housing 6 of the Ulandlergetriebes to the coupling shaft 9 and the parallel Abtriebsujslle 21.

In the embodiment according to FIG. 2, the coupling shaft 9 carries a first gear 14, while the hollow shaft 7 is a second and third gears 56 and 41, respectively. The second intermediate shaft 66 carries two gears rotatable on it, namely a fourth gear 65 and a fifth gear 76. On the output shaft 21, which is a first intermediate shaft sixth, seventh, eighth and ninth gearwheels 64, 63, 40, 15 are rotatably mounted.

The toothed wheel 14 meshes with the toothed wheel 15. The toothed wheels 56, 41 mesh with the toothed wheels 63 and 76, respectively, and the toothed wheel 41 also meshes with gear 40. Gear 65 meshes with gear 64.

In the Ulandler transmission according to FIG. 2, three pairs of planet gears 12, 12A are mounted on a support part 11A of the rotatable pump wheel cover 11 by means of axles 8 or ΘΑ , the planet gears 12A meshing with the ring gear 24, while the planet gears 12 mesh with the gear 13 . The parts mentioned form a modified embodiment of the first (planetary) gear. The disk 73 is attached to the ring gear 24 , while the sun gear 13 is mounted on the clutch shaft.

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The gear 40 carries a synchronizing cone 42, while a synchronizing disc 43 with teeth 44 of a known type is provided. At the gear 40 there are claws 45 of a claw clutch intended. Claws 46 mesh with a toothing 47 of the sleeve-shaped extension 49, which is a coupling element 5OA carries. The coupling element 50A carries coupling plates 50, which can be brought into engagement with coupling plates 51, which are carried and / or grounded by a clutch drum 52 which is mounted on the output shaft 21.

The pressure medium pressure generated by the pump 77, 78 can be effectively grounded via a channel 54 on a piston 53, with the aid of which the coupling plates 50, 51 can be brought into engagement with one another. A ball valve 89 with a ball resiliently biased against its seat reduces the pressure acting on the piston 53 due to the centrifugal forces acting on the ball and the spring, with a reduction in the speed on the output side.

The gear 55 meshes with the gear 63 on the hollow shaft 7. The gear 63 has a synchronizer 57 for engaging a plate 58 with a toothing 59. The gear 63 is with driving claws bzu /. Claws 60 provided.

The component 48 can be moved by means of a fork 61 (FIGS. 4 and 5) which engages in a groove 62 in such a way that it engages either the teeth or claws 44 and 45, or the claws 46, 60.

The gearwheel 64, which is attached to the sleeve-shaped extension 49 , meshes with the gearwheel 65 on the intermediate shaft

66, which is arranged parallel to the UJeIlen 9 and 21 and offset from these. The gear 76 (Fig. 3) meshes with the gear 41. The gear 76 carries a synchronizing cone

67, while a synchronizing plate has teeth 69 and claws 7O ₉ . 71 has. There are teeth 72 and a groove 73 for the fork 8G

7098A9 / 09B1

(Fig. 4) present.

Shift rods 74, 75 (Figs. 4 and 5) are operated by moving parts 77A, 77B in slots 81,79.

To switch on idling, the claws and the clutch plates 50, 51 are disengaged.

UJe η η the claws 45, 46 together by moving the Component 4Θ to the right - in Fig. 2 - are brought into engagement and when the coupling plates 50, 51 with each other in Are brought into engagement, then there is a drive in the Voruiartsrichtung Via the gears 14, 15, the freewheel 37, the hub 40A and the gears 41, 40. Solita the drive Stop via the intermediate turbine wheel TC, then the freewheel 37 will spin freely.

When shifting from idle to forward gear, the hollow shaft 7 and the coupling shaft 9 rotate when the drive shaft rotates. The shift fork 61 is after shifted to the right, but the teeth 44 stop this movement in a known manner until the speeds of the claws 45, 46 are synchronized with the aid of the synchronizing cone 42, whereupon the switching movement can then be continued and the pawls 46 and 45 engage. The sleeve-shaped extension 49 now rotates and can with it of the output shaft 21 can be coupled by bringing the coupling plates 50, 51 into engagement with each other so that now a drive takes place.

The second transmission includes in the embodiment according to Fig. 2 the parts 14, 15, 40, 41, 64, 65, 56, 63.

709849/0951

When the claws 45, 46 after moving apart of the Coupling plate 50, 51 brought out of engagement with one another then the claws 46, 60 can be synchronized with one another and brought into engagement, whereupon the Coupling plates 50, 51 can be brought back into engagement with one another. This is equivalent to inserting a "low" gear, so that IKlotorbremsung now take place or an unusually steep incline can be driven.

If the claws 45, 46 and 60 are brought out of engagement with one another and furthermore the claws 70 and 71 are brought into engagement with one another, then this corresponds to engaging a reverse gear.

The elements of the transmission for the reverse gear, ie the claws 70, 71 remain in engagement with one another when the ratchet teeth or the teeth 82 are brought into engagement in the parking position. With this UJe is θ it is possible to release the parking lock with a stationary vehicle and with a stationary machine in a simple orphan, whereby at the same time it is avoided that the claws get into engagement with each other when starting from the parking position reverse gear or idling be switched on. The explained configuration also ensures that the clutch plates 50, 51 are released by the rotary movement when the engine is generally started in the parking position.

The switching devices are designed in such a way that an operating lever attached outside of the Lüandlergetriebes only has to be moved along an arc without additional movements in other directions being required . This makes it possible to use a valve in a simple UJ β is β

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to actuate appropriate positions to bring the clutch plates 50, 51 into engagement or disengagement, wherein no dead gear or the like is required.

The (multi-stage) flow converter takes care of the operation its elements 1, TC, T and R, as long as it works as a flow converter, for the transmission of drive power from the drive shaft 10 to the hollow shaft 7 and to the Coupling shaft 9. When coupling, the drive energy is transmitted to the hollow shaft 7, the freewheel 37 being a allows free rotation.

In the Lüandlergetriebe according to FIGS. 1 and 2 is in each case second gear 14, 15, 40, 41 is provided, which is mounted in a stationary component and the first gear 12, 13, 24 and the intermediate turbine wheel TC connects to the hollow shaft 7, which represents the output shaft of the converter ^ and which also connects the turbine wheel T on the output side connects via the freewheel 37 to the output side. Furthermore, the gears allow different gear ratios, in particular the activation of a low one Ganges or mountain gears as well as a reverse gear. The second gear can be connected directly to the output shaft are and generated between the hollow shaft 7 and the output shaft 21, a transmission ratio, which of the Gear ratio between the output shaft 21 and the clutch shaft 9 is different.

The first transmission with the planetary gears 12, 12A according to FIGS. converter according to FIG. 1 and according to GB-PS 1 199 521 and 1 347 different. Take care of the last mentioned gear for different gear ratios and for the fact that the torque of the intermediate turbine wheel can be divided into different proportions. The transmission of a

709849/0951

A reduced share of the torque on the pump wheel and an increased share on the second gear and the output source make it possible to achieve a more constant speed on the input side and to dispense with adjustable blades of the table turbine wheel. This represents a »major advantage.

FIG. 7 shows a hydraulic control circuit for the UJandler gearbox according to FIG. 1. Reference number 112 denotes a schematically illustrated lüählventil with five different positions. These five different positions or switching positions of the UJählventils 112 are indicated individually in FIG. Reference numeral 113 denotes a line pressure regulating valve, which can be acted upon at 114 with the negative pressure from the intake side of the (internal combustion) engine (not shown).

The negative pressure changes as a function of the opening of the throttle valve and the speed and is used in a known manner to change the line pressure. A check valve 116 (see also Fig. 8) regulates the outflow of liquid from the flow air valve or. the fluid pressure in the transducer. The line pressure control valve 113 serves the required Druckzum Press, the clutches and brakes to maintain and empties to the Strömungsu / andler, iuenn there, the maximum fluid pressure is reached "If the valve 112 is in its one position R, then charged it 108. UJenn the valve is moved to its position N 112 the brake cylinder 109 (bzui. the plunger thereof) by the pressure medium and relieve the piston 103 and the brake cylinder, it relieves the piston 103 and the brake cylinders 108 and 109. UJenn the Valve 112 is moved into position D, it relieves the brake cylinders 108 and 109 and pressurizes the piston 103 with pressure medium.

709849 / 09B1

When the Vantil 112 is brought into the stable L, the load is released it the piston 103 and the cylinder 109 and now acts on the brake cylinder 100 with pressure. the Positions R, N, D and L correspond to the usual switch positions for the gear lever of an automatic Transmission.

709849/0951

Claims (7)

Kehl ^ D-73 ÖÖ Ersfinger Di p: .- Ing. Hartmut KeM Kratzsch MulbergerVtr. 65 Dipl.-Ing. Volkhard Kratzsch T elephone Stuttgart 0711-35 9992 Deutsche Bank Esalingen 210906 cable «kehlpatenl» essiing enneckar Postscheckamt Stu ttg art 10004-701 Chase Manhattan Bank New York VARIABLE KINETIC DRIVES LIMITED ITIai 17, 1977 Pillory Green, Napton, Rugby, Warwickshire / England Attorney File 2280 Claims UJandler gearbox with a torque converter with a Drive shaft and an associated pump wheel, with a driven turbine wheel, which is connected to the Abtriab3seits of Ufandler gear is connected with a revolving Intermediate turbine wheel, with a first gear via which the feed turbine wheel is connected to the pump wheel, and with a second gear via which the first gearbox with the output side of the Ufandlerge— trisbes is connected, characterized in that a fixed guide wheel (R) it is provided that a hollow shaft (7) is provided on the output side, with which the output turbine wheel (T) is connected that the first gear (12, 13, 24, Fig. 1; 12, 12A, 13, 24, Fig. 2) through the second gear (14, 15, 40, 41, Fig. 1; 14, 15, 40, 41, 64, 65, 56, 63, Fig. 2) is connected to the hollow shaft (7) via a freewheel (37) and that a third gear (96 etc., Fig. 1; 63 etc.) Fig. 2) is provided, which connects the second gear with an output element (84). 709849/0951 ORIGINAL INSPECTED 2. UJandlergatriebe according to claim 1, characterized that the first gear is connected to a coupling shaft (9) which is coaxial to the torque converter and the hollow shaft (7) is arranged and which with the second gear (14) connected is. 3. IDandlar gear according to claim 1 or 2, characterized in that an intermediate part (21) is provided on the output side, the axis of which runs parallel to the axis of the torque converter and the gears (14, 15) which carry the second gear (14, 41) with connect to the third gear. 4. Landler transmission according to any one of claims 1-3, characterized in that, with the aid of the third transmission, it is possible to switch from a low forward gear to the direct gear. 5. Uiandler gear according to claim 3, characterized in that the second gear has two gears, of which the first (41) is carried by the hollow (7) and of which the second (14) is carried by a coupling shaft (9), which extends coaxially with the hollow shaft (7), wherein the first and second gears (41, 14) mesh with third and fourth gear wheels (40, 15) carried by the intermediate shaft (21) and said third gear (40) is connected to the third gear (96 etc., Fig. 1) and the fourth gear (15) via the freewheel (37) with the third gear (40) . 6. LUandler gear according to claim 5, characterized in that the third gear is a planetary gear with planetary gears, which with a 709849/0951 The sun gear (99) mesh with which by means of a clutch (102, 105) and can be applied by means of a brake (104) and its planet gears also mesh with a ring gear (100) on which a brake (107) can be applied is such that the ring gear (100) can be stopped in order to reverse the direction of rotation and that Sun gear (99) can be stopped in order to bring about a reduction. 7. Uiandler gear according to claim 2, characterized in that parallel to the first Zuiischeniuelle (21) a zuiischeniuelle (66, Fig. 2) it is provided that the hollow shaft (7) carries a first and a second gear wheel (56, 41) that 6ine to the hollow shaft (7) parallel and coaxial coupling shaft is provided that on the coupling shaft a first gear (14) is provided that on the hollow shaft (7) a second and a third gear (56, 41) are provided that on the second intermediate shaft (66) a fourth and a fifth gear (65, 76) are provided that on the first Intermediate shaft (21) a sixth, a seventh, an eighth and a ninth gear (64, 63, 14, 15) are rotatably arranged that a coupling element (50A) is provided is, which carries coupling plates, that first coupling devices are provided to the coupling element alternately with the seventh gear (63) and the eighth gear (40) to couple that the ninth gear (15) with meshes with the first gear (14) and acts on the eighth gear (40) via the freewheel (37) that the second gear (41) meshes with the seventh gear (63) that the third gear (56) meshes with the fifth gear (76) that the fourth gear (65) meshes with the sixth gear (64), that the third gear (41) also meshes with the eighth gear (40) and that second coupling devices (73) are provided, with the help of which a common combing the fourth and fifth gear can be brought about. 709849/0951 θ. Ulandler gate drives according to claim 2, 2 and 3 or 2 and 8, characterized in that the first gear has a set of planetary gears (12, 12A) which mesh with a sun gear (13) and with a ring gear (24), that the planetary gears (12, 12a) carried by the drive shaft (10), that the ring gear (24) carries the rotating Zuiischenturbinenrad (TC) and that the sun gear (13) is carried by the clutch (9). 709849/0951