DK180814B1 - Clutch system for faster gearing process with constant torque transmission - Google Patents

Abstract

A coupling system mechanically transferring torque in between hydraulically coupling out of one gear and hydraulically coupling in another gear. Depending on the rotational configuration of the coupling system relatively to the motor rotation direction, the coupling system provides smooth torque transfer either during gearing up or during downshifting.

Description

DK 180814 B1 1 Clutch system and method for faster gearing process with constant torque trans- mission Field of the Invention The present invention relates to clutch system for either fast gearing up with constant torque transmission or fast downshifting with constant torque transmission. Gearing up or down with constant torque transmission is achieved by mechanical clutching during gearing from hydraulic disengagement of one gear to hydraulic engagement with a clutch of another gear.

Background of the Invention A common technical challenge for all coupling systems is a loss in traction during the switching of gears, due to temporary loss or reduction of the torque transfer. It could be a full loss of torque transfer, like when using manual gears, or a smaller drop using hybrid systems. Many inventions are trying to solve this technical challenge by various alternative means, as described in this section. None of them discloses a simple and reliable coupling system for constant torque transfer during gear shifting. US3216545A (KURT SCHROTER, published on 1965-11-09)"Multiple friction clutches”, discloses a coupling system where friction disks are engaged and disengaged with pushing rods or a diaphragm spring.

US8042672B2 (GRETHEL et al., published on 2011-10-25) discloses a hydraulic ar- rangement for controlling and cooling a twin-clutch transmission of a motor vehicle. US4022308 A (HURST, published on 1977-05-10) discloses axially movable cone members for selective engagement of a clutch with either mating cone member, ena- bling said member or members to be driven in either rotary direction.

US8025138 B2 (YOSHINAGA et al., published on 2011-09-27) discloses some exam- ples of bevelled teeth used in a multi-clutch system.

None of the alternative attempts to a coupling system discloses a simple and reliable mechanical support of torque transfer in between hydraulically coupling out of one gear and hydraulically coupling in another gear. Depending on the rotational configuration of the coupling system relatively to the motor rotation direction, the coupling system is smoothly transferring the torque either during gearing up or during downshifting.

DK 180814 B1 2 Objective of the Invention One objective of the invention is a coupling system for faster and smoother gearing with constant torque. Another objective of the invention is a method of switching gears faster and smoother and with a constant torque. The third objective of this invention is the use of the coupling system for motorized vehicles. Description of the Invention An objective is achieved by a coupling system comprising a flywheel housing (1), an inner and an outer concentric shafts (2) and (3), a first friction disk (4) attached to the inner shaft (2). There is a second friction disk (5) attached to the outer shaft (3). There is a first and a second hydraulic rings (6 and 6a) configured to engage and disengage the first and the second friction discs during gear shifting. The coupling further com- prises a first and a second self-locking disk-shaped plates (7 and 8) configured for me- chanical coupling between hydraulically disengaging one gear and hydraulically engag- ing another gear. Thereby, an additional mechanical clutching is achieved during hydraulic gearing pro- cess, where said mechanical clutching assists constant torque transfer inbetween hy- draulic disengagement of one gear to hydraulic engagement with another gear.

A further objective is a fast and smooth gear shifting method. It is achieved by two self- locking discs-shaped plates mechanically engaging or disengaging with the each one of the friction discs, with the friction discs guided in and out of coupling with flywheel housing using self-locking disc-shaped plates and two respective hydraulic rings.

The third objective of the invention, use of coupling system and method in motorized vehicles, is achieved, when the coupling system and coupling method of two other ob- jectives are employed in motorized vehicles to achieve fast acceleration with constant torque for gearing up coupling system in vehicles and in order to assist pulling heavy loads and moving uphill for gearing down system in motorized vehicles.

DK 180814 B1 3 Description of the Drawings Fig. 1. A cross-sectional full view of the flywheel housing (1). Fig. 2. A cross-sectional broken view of the flywheel housing (1). Fig. 3. A cross-sectional view of an outer shaft (3). Fig. 4. Illustration of starting up, when both shafts (2) and (3) are not coupled.

Fig. 5. Illustration of torque transfer with hydraulically coupled first gear.

Fig. 6. Shifting gear hydraulically coupling out one gear and mechanically coupling it in at the same time.

Fig. 7. Ilustrates a temporary mechanical coupling ensuring constant torque transfer in between the hydraulically coupled gears.

Fig. 8. Illustration of engaging the higher gear during gearing up.

Fig. 9. Once a higher gear is coupled hydraulically, the mechanic decoupling takes place automatically.

Fig. 10. Higher gear.

Fig. 11. The downshifting.

Fig. 12. Comparison of the novel coupling system with DSG and manual gearing.

DK 180814 B1 4 # | Technical feature Function (here, for mechanical assisting of hydraulic Pr 1 | Flywheel housing Transmitting engine movement into rotational move- OD ere 4 | A first friction disk on inner shaft 2 | Allows the inner shaft and the engine to run at the same TEE Je | A second friction disk on outer shaft | Allows the output shaft and the wheels to run at the same aa Hydraulic pressure ring on the outer | Activated for coupling in a higher gear, it pushes the sec- shaft 3 ond friction disk 5 causing friction between second fric- tion disk, hydraulic pressure ring and flywheel housing, and, thus, transferring the torque Hydraulic pressure ring on the inner | During upgrading gear, pushing clockwise self-locking (lie 0 mn 7 | Self-locking disk-shaped plate with | Temporarily mechanical engagement to transfer torque obliquely cut teeth-like structures or | from low to high gear “beveled teeth”, locking for example when engine rotates clockwise to the inner shaft 2 using for example splines Self-locking disk-shaped plate 8 with | Mechanical disengagement from low gear.

As the gear obliquely cut teeth-like structures | change occurs, the engine rpm will increase, causing the (“beveled teeth”, locking for exam- | second self-locking disc 8 to 'pop out' as the engine be- ple on rotation of flywheel housing | gins to pull on the outer shaft.

Thereby, the torque trans- counterclockwise), moveably con- | mission becomes constant.

The disc rotates relatively nected to the outer shaft 3 (for exam- | faster than the flywheel housing, whereby the disc ple, by using splines) pushes itself out due to the orientation of the teeth.

As there is no pressure on the back of the disc, it will pop out and be inactive.

First structures on inner surfaces | The first structures (9) on inner surfaces (facing shafts) (facing the respective shafts) of fric- | of friction disks (4) and (5) and plates (7) and (8) engage tion disks (4) and (5) and plates (7) | and lock with the second structure zones (14) on the in- and (8), illustrated as splines ner and outer shafts (2) and (3), reversibly coupling fric- tion disks and self-locking plates to the with a respective shaft in rotational movement.

DK 180814 B1 | A first area on flywheel housing (1) | the obliquely cut teeth-like structures in the first area surface with obliquely cut teeth-like | (10) of the flywheel housing (1) engages with the structures (“bevelled teeth”) obliquely cut teeth of the first self-locking disk-shaped plate (7) in area (12), when pressed together in rotation 11 | A second area on flywheel housing | the obliquely cut teeth-like structures in the second area (1) surface with obliquely cut teeth- | (11) of the flywheel housing (1) engages with the like structures (“bevelled teeth”) obliquely cut teeth of the second self-locking disk- shaped plate (8) in area (13), when pressed together in rotation 12 | Area with the obliquely cut teeth of | the obliquely cut teeth of the first self-locking disk- the first self-locking disk-shaped | shaped plate (7) in area (12) engages with the obliquely plate (7). The cut teeth shapes are | cut teeth-like structures in the first area (10) of the fly- complimentary to that of area (10) of | wheel housing (1), when pressed together in rotation flywheel housing (1) 13 | Area with the obliquely cut teeth of | the obliquely cut teeth of the second self-locking disk- the second self-locking disk-shaped | shaped plate (8) in area (13) engages with the obliquely plate (8). The cut teeth shapes are | cut teeth-like structures in the second area (11) of the complimentary to that of area (11) of | flywheel housing (1), when pressed together in rotation flywheel housing (1) 14 | Zones with second structures, one | Second structures in the zones (14) lock the inner and zone is on the outer surface of the | outer shafts (2) and (3) with the first structures (9) on outer shaft (3) and another zone 14 is | inner surfaces (facing shafts) of friction disks (4) and (5) on the outer surface of the inner shaft | and plates (7) and (8). When any of said disks and/or 2) plates (4, 5, 7, and 8) are pushed into any of the two zones (14), they lock to a respective shaft and start rotat- ing along with that shaft. Once pushed out or popped out of zones (14), said disks and plates disengage the respec- tive shaft and stop rotating. The lateral movement of (4, 5, 7, and 8) along with a respective shaft is always pos- sible, said disks or plates (4, 5, 7, 8) being pushed into zones (14) for rotational engagement with shafts by hy- draulic rings (6) and (6a). In figures, second structures of zones (14) are illustrated as splines.

Detailed Description of the Invention One embodiment of the invention is directed towards mechanically assisting gearing up process, while gearing down will take place without mechanically supported constant torque transfer. The process of this embodiment is illustrated in figures 1-12.

DK 180814 B1 6 Fig. 1 illustrates a cross-sectional full view of the flywheel housing (1) comprising two concentric shafts (2) and (3), a first and a second friction disks (4) and (5), each move- ably attached to one of the respective shafts, two hydraulic rings (6a and 6) for coupling during gear shifting, and two self-locking disk-shaped plates (7) and (8) configures for mechanical coupling in between hydraulically disengaging one gear and hydraulically engaging another gear. Fig. 2 illustrates a cross-sectional broken view of the flywheel housing (1), showing that the flywheel housing comprises obliquely cut teeth-like structures (“bevelled teeth”) that are complimentary to and capable of locking with the obliquely cut teeth- like structures (“bevelled teeth”) on one of the disc surfaces of a self-locking disc- shaped plate. This locking principle is known from kick-starters for motorbikes.

Fig. 3 shows a cross-sectional view of an outer shaft (3) with a zone with second struc- tures (10) on the outer surface of the outer shaft, said zone expanding only where a friction disk (5) and a self-locking disk-shaped plate (8) should interlock with respective axes during rotation, and the first structures on the inner surfaces of disk (5) and plate (8) facing the shaft. Here, the first and second structures are illustrated as splines. When the first and the second structures are interlocked, the interlocked elements rotate to- gether, but the disk (5) and the plate (8) is still moveable along the axis of the shaft, and capable of disengaging from the shaft when pushed out of the zone with second struc- tures on the outer surface of the shaft.

Fig. 4 is illustrating starting up the gearing process, when both shafts (2) and (3) are not coupled, both disks (4) and (5) are not engaged, both plates (7) and (8) are not engaged, and rotating engine only engages the flywheel housing and the hydraulic pressure rings. Fig. 5 illustrates torque transfer when a first gear is coupled hydraulically.

Fig. 6 illustrates shifting gears. Process starts with hydraulically coupling out one gear and mechanically coupling it in at the same time. This is done by simultaneously hy- draulically disengaging the first friction disk (4) and hydraulically pushing the first self- locking disc-shaped plate (7) into the engagement with flywheel housing, said engage- ment locking when engine pulls.

DK 180814 B1 7 Fig. 7 illustrates a temporary mechanical coupling, ensuring the torque transfer in be- tween the hydraulically coupled gears. The engine pulls the flywheel housing and me- chanically engaged to it plate (7). Plate (7) is also splined to the shaft (2) in this position, so the torque is transferred to the shaft. Fig. 8 illustrates engaging the higher gear during gearing up. Once the hydraulic pres- sure ring is activated on gear shifting, the hydraulic pressure ring engages the friction disc, creating friction between the said disc and the flywheel housing and the hydraulic pressure ring, and the torque is transferred to the outer shaft.

Fig. 9 illustrates that, once a higher gear is coupled hydraulically, the mechanic decou- pling takes place automatically, as the engines rpm (round per minute) slightly decrease when the engine is engaged with the outer shaft, and the self-locking disc-shaped plate (7) will rotate relatively faster and therefore will pop out of the engagement with the fly-wheel housing due to the orientation of the obliquely cut teeth-like structures. Dis- engagement of the mechanical coupling simultaneously with coupling of the higher gear ensures the constant torque transition during gearing up.

Fig. 10 illustrates coupling of a higher gear. Once the plate (7) on the inner shaft is disengaged from the fly-wheel housing, the torque transfer is ensured by hydrodynamic pressure ring coupling of the flywheel housing and the second friction disc (5) inter- locked with the outer shaft by using first and second structures on the surfaces of the friction disc and the shaft, for example, splines.

Fig. 11 illustrates the downshifting gears process. During the downshifting, the hydrau- lic pressure is removed from the coupled shaft and applied to another shaft. The down- shifting to lower gear is not mechanically supported in couplings for upgrading gear with constant torque, where the plate on the inner shaft locks in the direction of rotation of the engine.

Fig. 12. Comparison of the novel coupling system with DSG (traditional double cou- pling) and manual gearing (single coupling), where the pulling force and time are plot- ted for all 3 coupling systems under comparison.

DK 180814 B1 8 In one embodiment, a coupling system comprises a flywheel housing (1), an inner and an outer concentric shafts (2) and (3), a first friction disk (4) attached to the inner shaft (2), a second friction disk (5) attached to the outer shaft (3), a first and a second hydrau- lic rings (6 and 6a) for engaging and disengaging the first and the second friction discs during gear shifting, wherein the coupling further comprises a first and a second self- locking disk-shaped plates (7 and 8) for mechanical coupling between hydraulically disengaging one gear and hydraulically engaging another gear. In another embodiment, the flywheel housing (1) comprises a first area (10) and second area (11) com-prising obliquely cut teeth-like structures, the first and the second self- locking disk-shaped plates (7) and (8) comprising areas (12) and (13), respectively, with obliquely cut teeth-like structures complimentary to obliquely cut teeth-like structures of the respective first area (10) and second area (11) of the fly-wheel housing (1), where the obliquely cut teeth of the first self-locking disk-shaped plate in area (12) engages with the obliquely cut teeth-like structures in the first area (10) of the flywheel housing, when pressed together in rotation, and the obliquely cut teeth of the second self-locking disk-shaped plate in area (13) engages with the obliquely cut teeth-like structures in the second area (11) of the flywheel housing, when pressed together in rotation.

In a third embodiment, the first and second friction disks (4 and 5) and the first and second self-locking disk-shaped plates (7 and 8) are moveably engageable to the respec- tive inner or outer shafts (2 or 3, respectively), so that said disks (4 and 5) and plates (7 and 8) can engage to said shafts (2 or 3, respectively) on rotation while being freely moveable laterally along said shafts (2) or (3).

In yet a further embodiment, the first and second friction disks (4) and (5) and the first and second self-locking disk-shaped plates (7) and (8) comprise first structures (9) on the inner surfaces oriented towards respective inner or outer shafts (2) and (3), and the outer surfaces of inner and outer shafts comprise zones (14) with second structures on the outer surfaces, said zones expanding only where the disks and plates should inter- lock with respective shafts (2) and (3) during rotation, the first structures (9) and second structures in zones (14) being formed to engage friction discs (4) and (5) and self-lock- ing disk-like plates (7) and (8) to the respective inner or outer shafts (2) and (3), said first structures (9) being complimentary to said second structures in zones (14) in shape,

DK 180814 B1 9 to ensure locking the friction disks (4) and (5) and self-locking disk-shaped plates (7) and (8) to the respective inner or outer shafts (2) and (3) on rotation when being inside respective zone (14), while still allowing the lateral movement of friction disks (4) and (5) and self-locking disk-shaped plates (7) and (8) along the respective inner or outer shaft (2) and (3) in and out of said zones (14). In a further embodiment, said first structures (9) and said second structures in zones (14) are splines.

In a further embodiment, the area (12) with obliquely cut teeth-like structures of the first self-locking disk-shaped plate (7) is engaging and locking with the obliquely cut teeth-like structures in the first area (10) of the flywheel housing (1) in a first rotational direction, the obliquely cut teeth-like structures in area (13) of the second self-locking disk-shaped plate (8) is locking with the obliquely cut teeth-like structures in the second area (11) of the flywheel housing (1) in a second rotational direction, the second rota- tional direction being counter direction to said first rotational direction, and the gearing process so mechanically supported by the coupling system is gearing up.

In yet another embodiment, the obliquely cut teeth-like structures in areas (10), (11), (12) and (13) are manufactured to lock in direction reversed compared to gearing up process, so that the obliquely cut teeth-like structures in the first area (12) of first self- locking disk-shaped plate (7) is locking with the obliquely cut teeth-like structures in the first area (10) of the flywheel housing (1) in rotation, the obliquely cut teeth-like structures of the area (13) of the second self-locking disk-shaped plate (8) is locking with the obliquely cut teeth-like structures in the second area (11) of the flywheel hous- ing (1) in rotation, and the gearing process so mechanically supported by the coupling system is gearing down.

A further embodiment is a method to gear up using the disclosed coupling system, gear- ing up comprising the following sequential steps: a. Starting up: no shafts attached, no friction disks attached, an engine engages and rotates only the flywheel housing (1) and hydraulic pressure rings (6) and (6a); b. Engagement of a first gear: the hydraulic pressure ring (6) for the inner shaft (2) is activated and the first friction disk (4) on the inner shaft (2) is pressed into the

DK 180814 B1 10 flywheel housing (1), the first structures (9) on the inner surface of the first fric- tion disk engaging the second structures on the outer surface in zone (14) of the inner shaft (2) and thus locking first friction disk (4) to the inner shaft (2) and causing the inner shaft (2) to rotate, and the torque is transmitted; c. Upgrading gear: i. Hydraulic coupling out of low gear and mechanical engagement of low gear takes place at the same time, as the hydraulic pressure on the first friction disk (4) stops at the same time as a mechanical gearing of the low gear is performed by hydraulic ring (6) pushing the first self-locking disc-shaped plate (7) into engagement with the first area (10) of the fly- wheel housing (1), and, as the engine pulls, the engagement between the first self-locking disk-like plate (7) and the flywheel housing (1) locks, enabling temporary mechanical engagement and torque transfer during the transition from a low gear to a high gear; motor ro-tates the first fric- tion disc (4) engaged with the inner shaft (2) by interlocking the first structures (9) of the first friction disc (4) and second structures in zone (14) on the outer surface of the inner shaft (2), and the torque is trans- ferred; il. Hydraulic engagement of higher gear is performed when the hydraulic pressure ring (6a) pushes the second friction disk (5) on the outer shaft (3), causing friction between second friction disk (5), hydraulic pressure ring (6a) and flywheel housing (1), and torque is transferred.

iil. Mechanical disengagement of low gear occurs when the gear change oc- curs, because the rotational speed of the engine drops, causing the first self-locking disc-shaped plate (7) to 'pop out' of the engagement with the flywheel housing (1) as the engine be-gins to pull on the outer shaft (3), ensuring constant torque transfer and resulting in the first self-locking disc-shaped plate (7) rotating relatively faster than the flywheel housing (1), whereby pushing itself out of engagement due to the orientation of the teeth, and because there is no pressure on the back of the first self- locking disc-shaped plate (7), it will pop out of the engagement with fly- wheel housing (1) and will be inactive.

DK 180814 B1 11 f Coupling in a second gear happens hydraulically, once the first self-locking disc (7) on the inner shaft (2) has popped out and torque is transferred using the hydrau- lic pressure ring (6a) on the outer shaft (3).

g. Downshifting: a. Hydraulic engagement, high gear; b. Hydraulic engagement, low gear.

Another aspect of the invention is a method to gear down wherein the teeth-like struc- tures on both areas (10) and (11) on the flywheel housing (1) and in areas (12) and (13) on the respective plates (7) and (8) are manufactured to interlock in direction reversed com-pared to the coupling system for gearing up, thus mechanically assisting the hy- draulic gearing process during downshifting: a. Starting up: no shafts are attached, no friction disks are attached, and an engine operates rotating only the flywheel housing (1) and hydraulic pressure rings (6 and 6a), b. Hydraulic engagement of the first gear; C. Hydraulic coupling of a higher gear does upgrading gears.

d. Downshifting.

i. Hydraulic coupling out of higher gear and mechanical engagement of a lower gear takes place at the same time, as the hydraulic pressure on the second friction disk stops and a mechanical gearing of the higher gear is performed by hydraulic ring (6a) pushing the second self-locking disc-shaped plate (8) into engagement with the second area (11) of the flywheel housing (1), and, as the engine pulls, the engagement between the second self-locking disk-like plate (8) and area with oblique cut teeth-like structures (11) on the flywheel housing (1) locks; ii. The temporary mechanical engagement ensures torque transfer in the transition from the higher gear to the lower gear: motor rotates the second friction disc (5) engaged with the outer shaft (3) by interlocking the first structures (9) of the second friction disc (5) and the zone with second structures (14) on the outer surface of the outer shaft (3), ensuring torque transfer; ill. Hydraulic engagement of lower gear is performed when the hydraulic pressure ring (6) pushes the first friction disk (4) on the inner shaft (2), causing friction between the first friction disk (49, hydraulic pressure ring (6) and flywheel housing (1), and torque is transferred;

DK 180814 B1 12 iv. Mechanical disengagement of higher gear occurs when the gear change occurs, because the rotational speed of the engine will increase, causing the second self-locking disc-shaped plate (8) to 'pop out' of the engagement with the flywheel housing (1) as the engine begins to pull on the inner shaft (2), thereby, ensuring constant torque trans- fer and causing the second self-locking disc-shaped plate (8) to rotate relatively faster than the flywheel housing (1), whereby pushing itself out of the engagement with hous- ing (1) due to the orientation of the teeth, and, as there is no pressure on the back of the second self-locking disc-shaped plate (8), it will pop out of the engagement and will be inactive.

The last aspect of the invention is the use of the coupling systems and coupling methods as disclosed in other aspects in motorized vehicles, in order to achieve fast acceleration with constant torque for gearing up systems and method and to assist pulling heavy loads and moving uphill for gearing down systems and method according to other as- pects above.

Claims (10)

DK 180814 B1 1 Patent claim Coupling system comprising a flywheel housing (1), an inner and an outer concentric shaft (2) and (3), a first friction disc (4) attached to the inner shaft (2), a second friction disc (5) ) attached to the outer shaft (3), a first and a second hydraulic ring (6 and 6a) configured to engage and disengage the first and second friction discs during gear shifting, characterized by that the coupling further comprises a first and a second self-locking disc-shaped plate (7 and 8) configured for mechanical coupling between hydraulic disengagement of one gear and hydraulic engagement of a second gear. Coupling system according to claim 1, wherein the flywheel housing (1) comprises a first region (10) and a second region (11) comprising inclined teeth-like structures, the first and second self-locking disc-shaped plates (7) and (8) comprises regions (12) and (13), respectively, with beveled teeth-like structures complementary to beveled teeth-like structures for the respective first region (10) and the second region (11) of the flywheel housing (1), wherein the beveled teeth of the first self-locking disc-shaped plate in the region (12) are configured to engage the beveled teeth-like structures in the first region (10) of the flywheel housing when pressed together during rotation, and the beveled teeth for the second self-locking disc-shaped plate in region (13) engages with the beveled teeth-like structures in the second region (11) of the flywheel housing when pressed together during rotation. Coupling system according to any one of the preceding claims, wherein the first and second friction discs (4 and 5) and the first and second self-locking disc-shaped plates (7 and 8) are in movable engagement with the respective inner or outer shafts (2 or 3, respectively) so that the discs (4 and 5) and the plates (7 and 8) are configured to engage the shafts (2 or 3, respectively) during rotation while being freely movable laterally along the shafts (2) or (3). Coupling system according to claim 3, wherein the first and second friction discs (4) and (5) and the first and second self-locking disc-shaped plates (7) and (8) comprise first structures (9) on the inner surfaces oriented towards respective inner or outer shafts (2) and (3), and the outer surfaces of the inner and outer shafts comprise zones (14) with different structures on the outer surfaces, the zones only expanding where the discs and plates must lock together with the respective shafts (2) and (3) during rotation, where the first DK 180814 B1 2 structures (9) and other structures in zones (14) are formed to engage friction discs (4) and (5) and self-locking disc-like plates (7) and (8) for the respective inner or outer shafts (2) and (3), the first structures (9) being complementary to the second structures in zones (14) in order to ensure locking of the friction discs (4) and (5) and the self-locking disc-shaped plates (7) and (8) to the respective inner or outer shafts (2) and (3) during rotation when inside the respective zone (14), while still allowing the lateral movement of friction discs (4) and ( 5) and self-locking disc-shaped plates (7) and (8) along the respective inner and outer shaft (2) and (3) in and out of the zones (14). Coupling system according to claim 4, wherein the first structures (9) and the second structures in zones (14) are grooves. Coupling system according to any one of the preceding claims, wherein the region (12) with beveled teeth-like structures of the first self-locking disc-shaped plate (7) is configured to engage and lock with the beveled teeth-like structures in the first region (10) of the flywheel housing (1) in a first direction of rotation, the inclined teeth-like structures in the region (13) of the second self-locking disc-shaped plate (8) lock with the inclined teeth-like structures in the second region (11) of the flywheel housing (1) in a second direction of rotation, the second direction of rotation is in the opposite direction to the first direction of rotation, and the gearing process mechanically supported by the clutch system gears up. A coupling according to any one of claims 1-5, wherein the obliquely cut tooth-like structures in areas (10), (11), (12) and (13) are made to lock in the reverse direction relative to the gearing process , so that the beveled teeth-like structures in the first region (12) of the first self-locking disc-shaped plate (7) lock with the beveled tooth-like structures in the first region (10) of the flywheel housing (1) below rotation, the inclined teeth-like structures of the area (13) of the second self-locking disc-shaped plate (8) lock with the inclined teeth-like structures in the second area (11) of the flywheel housing (1) during rotation, and the gearing process mechanically supported by the clutch system downshifts. Method of gearing up using the clutch system according to any one of claims 4-6, characterized in that upgrading gears comprises the following sequential steps: DK 180814 B1 3 a) Hydraulic disengagement of low gear and mechanical engagement of low gear takes place at the same time as the hydraulic pressure on the first friction disc (4) stops at the same time as a mechanical gearing of the low gear is performed by the hydraulic ring ( 6), which pushes the first self-locking disc-shaped plate (7) into engagement with the first area (10) of the flywheel housing (1), and, as the motor pulls, locks the engagement between the first self-locking disc-like plates (7) and the flywheel housing (1), enabling temporary mechanical engagement and torque transfer during the transition from a low gear to a high gear; the motor rotates the first friction disc (4) which engages with the inner shaft (2) by interlocking the first structures (9) of the first friction disc (4) and second structures in the zone (14) on the outer surface of the inner shaft (2) and the torque is transmitted; b) Hydraulic engagement of higher gears is performed when the hydraulic thrust ring (6a) pushes the second friction disc (5) on the outer shaft (3), causing friction between the second friction disc (5), the hydraulic thrust ring (6a) and the flywheel housing (1), and torque is transmitted. C) Mechanical disengagement of lower gears occurs when the gear change occurs because the engine speed decreases, causing the first self-locking disc-shaped plate (7) to "pop out" of the engagement with the flywheel housing (1), as the engine begins to pulling the outer shaft (3), ensuring constant torque transmission and resulting in the first self-locking disc-shaped plate (7) rotates relatively faster than the flywheel housing (1), thereby pushing itself out of engagement due to the orientation of the teeth, and because there is no pressure on the back of the first self-locking disc-shaped plate (7), it will pop out of the engagement with the flywheel housing (1) and will become inactive. A method of gearing down, wherein the teeth-like structures on both areas (10) and (11) of the flywheel housing (1) and in areas (12) and (13) on the respective plates (7) and ( 8) is designed to lock in the reverse direction compared to the clutch system for gearing up, thus mechanically assisting the hydraulic gearing process during downshifting, characterized in that the downshift comprises the following sequential steps: a) Hydraulic disengagement of higher gears and mechanical engagement of a lower gear occurs at the same time as the hydraulic pressure on the second friction disc stops, and a mechanical gearing of the higher gear is performed by the hydraulic ring (6a) pushing the second self-locking disc-shaped plate (8) in in engagement with the second area (11) of the flywheel housing (1), and, as the engine pulls, the engagement locks DK 180814 B1 4 between the second self-locking disc-like plates (8) and the area with obliquely cut teeth-like structures (11) on the flywheel housing (1); b) Temporary mechanical engagement ensuring torque transfer in the transition from the higher gear to the lower gear: the motor rotates the second friction disc (5), which engages the outer shaft (3), by interlocking the first structures ( 9) of the second friction disc (5) and the zone with the second structures (14) on the outer surface of the outer shaft (3), which ensures torque transmission; C) Hydraulic engagement of the lower gear is performed when the hydraulic thrust ring (6) pushes the first friction disc (4) on the inner shaft (2), causing friction between the first friction disc (4), the hydraulic thrust ring (6) and the swing - the wheel housing (1), and torque is transmitted; d) Mechanical disengagement of higher gears occurs when the gear change occurs because the engine speed increases, causing the second self-locking disc-shaped plate (8) to "pop out" of the engagement with the flywheel housing (1), as the engine begins to pulling the inner shaft (2), thereby ensuring constant torque transmission and causing the second self-locking disc-shaped plate (8) to rotate relatively faster than the flywheel housing (1), thereby pushing itself out of engagement with the housing (1) due to of the teeth orientation, and, since there is no pressure on the back of the second self-locking disc-shaped plate (8), it will pop out of the engagement and will become inactive. Use of the clutch system and clutch method according to any one of the preceding claims in motor vehicles to obtain fast acceleration with constant torque for a gearing system according to claims 1-6 and method according to claim 8 and to obtain constant torque when heavy loads and upward movement of the downshift system according to claims 1-5 and 7 and method according to claim 9 are drawn.