SERRARENS ALEXANDER FRANCISCUS ANITA (NL)
VROEMEN BAS GERARD (NL)
| CLAIMS: 1 . Transmission system (TS) comprising: - a clutch module (CM) having an input (In) and a first and a second output ( 01 . 02 ). wherein between the first output and the input, a first clutch device (B, B l, C2) provided with first actuating means is present, and between the second output and the input a second clutch device (C, B2) with second actuating means is present, and - a transmission module (TM), with an output (Out) and a first and a second input (il, i2), wherein between the first input and the output, a first partial transmission provided with at least one transmission (VAR) is present, and between the second input and the output a second partial transmission provided with at least one further transmission or a mechanical connection is present, - in which the two outputs (01, 02) of the clutch module are connected to the two inputs (i l, 12) of the transmission module, characterized in that - the transmission system comprises a short-circuit clutch (S), which is present between the two outputs of the clutch module and/or the two inputs of the transmission module, and - the transmission (VAR) inside the first partial transmission is continuously variable within a specified transmission range. 2. Transmission system according to claim 1 , characterized in that the transmission (VAR) within the first partial transmission has been carried out electrically, for example, as an electric motor - generator combination. 3. Transmission system according to claim 1, characterized in that the transmission ( VAR ) in the partial transmission is constructed as a planetary gear (P) provided with at least three rotational members, of which a first rotation body (rl) form the input of the transmission, a second rotation body (r2) forms the output of the transmission, and a third rotation body (r3) is connected to an electric motor that can be operated both as a motor and as a generator. 4. Transmission system according to claim 1, characterized in that the transmission (VAR) in the partial transmission is carried out hydraulically, for example, as a hydraulic motor - generator combination. 5 . Transmission system according to one of the preceding claims. characterized in that a speed transforming means (I, P) are present between the input (In) and the first output (01) . 6. Transmission system according to claim 5, characterized in that the speed transforming means (I, P) are embodied as a mechanical transmission. 7. Transmission system according to claim 5, characterized in that the speed transforming means (P) are designed as a bypass transmission, for example, a planetary gear train provided with at least three rotational members, of which a first rotation body (rl) is connected to the input (In), a second rotation body (r2) is connected to the first output (01), and a third rotation body (r3) is connected to the first clutch device ( B. B l). 8. Transmission system as claimed in any one of the preceding claims, characterized in that the first clutch device (B, B l) and/or the second clutch device (B2) is designed as a brake . 9. Transmission system according to claim 8, characterized in that the brake is formed by a claw clutch to the fixed world, which cannot dissipated energy, or by a friction brake which can dissipate energy. 10. Transmission system as claimed in any one of the preceding claims 1 to 7, characterized in that the first and/or second clutch device (C, C2, B, B l, B2) is constructed as an electric motor, wherein the stator is connected to the fixed world and the rotor is connected to the relevant rotational body. 1 1 . Transmission system as claimed in any one of the preceding claims, characterized in that the second clutch device (C) is formed by a clutch which is present between the input (In) and the second output (02) of the clutch module. 12. Transmission system according to claim 11, characterized in that the second clutch device (C) is formed by a claw clutch which cannot dissipated energy, or by a friction clutch that can dissipate energy. 13. Transmission system as claimed in any one of the preceding claims, characterized in that the first clutch device (B, B 1) is formed by a friction brake, and the second clutch device (C) is formed by a friction clutch. 14. Transmission system as claimed in any one of the preceding claims, characterized in that a first transmission clutch (S I) is present between the first output (01) of the clutch module and the output (Out) of the transmission system. 15. Transmission system as claimed in any one of the preceding claims, characterized in that a second transmission clutch (S2) is present between the second output (02) of the clutch module and the output (Out) of the transmission system. 16. Transmission system as claimed in any one of the preceding claims, characterized in that a speed transforming gear is present between the first output (01) of the clutch module and the output (Out) of the transmission system. 17. Transmission system as claimed in any one of the preceding claims, characterized in that one or more of the transmission clutches (S I , S2) and/or the short- circuit clutch (S) is/are constructed as a claw clutch and/or synchroniser . 18. Transmission system as claimed in any one of the preceding claims, characterized in that the transmission system comprises an electric motor which is coupled or can be coupled with one or more of the components of the transmission system. 19. Transmission system as claimed in any one of the preceding claims and claim 3, characterized in that the transmission ratio of the speed transforming means (P) of the clutch module is chosen such that it is slowing down to the output of the clutch module in case the first clutch device (B l) is braked. 20. Transmission system as claimed in any one of the preceding claims, characterized in that the most reducing transmission gearing of the transmission module is present in the second partial transmission (T2). 21. Transmission system as claimed in any one of the preceding claims, characterized in that the highest (least retardant) transmission ratio of the overall transmission system is obtained via the second clutch device (C, B2) and the first partial transmission (VAR) wherein the short-circuit clutch (S) is closed. 22. Transmission system as claimed in any one of the preceding claims, characterized in that the lowest (most retardant) transmission ratio (1st gear) of the total transmission system is obtained via the first clutch device (C2, B l), the speed transforming means (I, P) of the clutch module and the second partial transmission (T2) or mechanical connection, wherein the short-circuit clutch (S) is closed. 23. Transmission system as claimed in any one of the preceding claims, characterized in that the 2nd gear of the transmission system is obtained via the second clutch device (C, B2) and the second partial transmission (T2) or mechanical connection. 24. Transmission system as claimed in any one of the preceding claims, characterized in that the 3rd gear of the transmission system is obtained via the first clutch device (C2, B l), the speed transforming means (I, P) of the clutch module and the first partial transmission (VAR). 25. Transmission system as claimed in any one of the preceding claims, characterized in that the 4th gear of the transmission system is obtained via the second clutch device (C, B2) and the first partial transmission (VAR), wherein the short-circuit clutch (S) is closed. 26. Transmission system as claimed in any one of the preceding claims, characterized in that the transmission module comprises a reverse gear (IR), which is present within the first or second partial transmission (Tl, T2). 27. Transmission system as claimed in any one of the preceding claims, characterized in that a reverse clutch (Sr) is present. 28. A method for switching between gears in a transmission system according to any one of the preceding claims, characterized in that the changing from a lower to a higher gear of the transmission system while maintaining drive torque at the output is realized by actuating/closing the second clutch device (C, B2) and reducing the actuation of the first clutch device (C2, B l) until the second clutch device can be closed. 29. Transmission system for a vehicle, comprising an input (In), which can be connected to a drive source (A), and an output (Out), which can be connected to a load (L), comprising: - a transmission provided with a transmission housing with a first input shaft (le) and an output shaft connected to the output, wherein a first switchable speed transforming gear (II) is present between the first input shaft and the output shaft, - a clutch (C) with a first clutch part, which is connected to the input, and a second clutch part, which is connected to the first input shaft of the transmission, and - a planetary gear (P) with at least three rotational members of which a first rotation body (rl ) is connected to the input, and a second rotation body (r2) is coupled to the output, - wherein the transmission further comprises a second input shaft (2e), wherein between the second input shaft and the output shaft a second switchable speed transforming gear (12) is present, and wherein the second rotational member of the planetary gear is connected with the second input shaft, characterized in that a third rotational member (r3) of the planetary gear is connected to an electric motor (EM). 30. Transmission system according to claim 29, characterized in that the third rotation body (r3) is further connected to a brake (B). |
Technical filed of the invention
The invention relates to a transmission system comprising:
- a clutch module having an input and a first and a second output, wherein between the first output and the input, a first clutch device provided with first actuating means is present, and between the second output and the input a second clutch device with second actuating means is present, and
- a transmission module, with an output and a first and a second input, wherein between the first input and the output, a first partial transmission provided with at least one transmission is present, and between the second input and the output a second partial transmission provided with at least one further transmission or a mechanical connection is present,
- in which the two outputs of the clutch module are connected to the two inputs of the transmission module.
Background of the invention
Such a transmission system is generally known. Summary of the invention
It is an object of the present invention to improve the known transmission system. To this end the transmission system according to the invention is characterized in that:
- the transmission system comprises a short-circuit clutch, which is present between the two outputs of the clutch module and/or the two inputs of the transmission module, and
- the transmission inside the first partial transmission is continuously variable within a specified transmission range. For embodiments of the transmission system according to the invention, reference is made to the appended claims.
The invention further relates to a transmission system for a vehicle, comprising an input, which can be connected to a drive source, and an output, which can be connected to a load, comprising:
- a transmission provided with a transmission housing with a first input shaft and an output shaft connected to the output, wherein a first switchable speed transforming gear is present between the first input shaft and the output shaft,
- a clutch with a first clutch part, which is connected to the input, and a second clutch part, which is connected to the first input shaft of the transmission, and
- a planetary gear with at least three rotational members of which a first rotation body is connected to the input, and a second rotation body is coupled to the output,
- wherein the transmission further comprises a second input shaft, wherein between the second input shaft and the output shaft a second switchable speed transforming gear is present, and wherein the second rotational member of the planetary gear is connected with the second input shaft.
With respect to this transmission system, the invention is characterized in that a third rotational member of the planetary gear is connected to an electric motor.
An embodiment of this transmission system is characterized in that the third rotation body is further connected to a brake.
Brief description of the drawings
The invention will be further elucidated below on the basis of drawings. These drawings show embodiments of the transmission system according to the method in the present invention.
Detailed description of the drawings In figures 1 to 4 embodiments of the transmission system according to the invention are shown. In these embodiments the variable speed drive may be mechanical, hydraulic, electrical, or as a combination of these. Examples of mechanical variable speed drives are:
- a pulley variable speed drive with push belt or chain,
- a cone-ring variable speed drive with two cones and a ring,
- a planetary gear with at least three rotational members of which a third rotational member can support torque to the fixed world via actuating means.
In these embodiments:
A drive source
L load
TS transmission system
In input of transmission system
Out output of transmission system
CM clutch module
01, 02 = outputs of clutch module
TM transmission module
il, i2 = inputs of transmission module
C, C1 = clutches
B,B1,B2= brakes
P planetary gear set
VAR = variable speed drive
T 1 . T2 = first and second partial transmissions
1, 11, 12,
111, 122 = speed transforming gears
S short circuit clutch
S1, S2, SR,
S11, S22= transmission clutches
IF final speed transforming gear
IR reverse speed transforming gear
EM electric motor
In figure 2 the transmission clutches S 1 and S2 are optionally.
Figures 5 and 6 show an embodiment of the transmission system.
Figures 7 and 8 show a further embodiment of the transmission system.
In the partial transmission which is present between the second input 02 and output Out or i n the final transmission IF a reverse gear IR is present. By actuating brake B it is possible to drive from stand still in both forward and rearward directions. The variable speed drive VAR will not be used in that case. When switching from the brake to the clutch drive torque remains present. When the clutch is closed and the brake is open the variable speed drive is still not used.
Now the claw coupling and/or synchronizer S can be decoupled and S 1 can be closed. By switching back again from the brake to the clutch drive can be performed via the variable speed drive and the higher gears can be realized. Thus there are two toothed gears with which driving from stand still is possible and the 3 ld gear and higher gears (3- 10) can be realized with the variable speed drive. Because of this an extremely large ratio coverage can be achieved. In addition, the variable speed drive can be much smaller ( RC between 3 and 4).
Figures 9 and 10 show a further embodiment of the transmission system. In the partial transmission which is present between the second input 02 and output Out or in the final transmission IF a reverse gear IR is present. By actuating brake B it is possible to drive from stand still in both forward and rearward directions. The variable speed drive VAR will not be used i n that case. When switching from the brake to the clutch drive torque remains present. When the clutch is closed and the brake is open the variable speed drive is still not used.
Now the claw coupling and/or synchronizer S can be decoupled and S 1 can be closed. By switching back again from the brake to the clutch drive can be performed via the variable speed drive and the higher gears can be realized. Now switching from clutch to brake can be performed so that the ratio coverage can still be increased. Thus there are two toothed gears with which driving from stand still is possible and the 3 ld and 4 th gears can be realized with the variable speed drive. Because of this an extremely large ratio coverage can be achieved. In addition, the variable speed drive can be much smaller ( RC between 2,5 and 3,5).
Figures 1 1 and 12 show still a further embodiment of the transmission system. In the partial transmission which is present between the second input 02 and output Out or in the final transmission IF a reverse gear IR is present. Gear wheels of the partial transmission or the final transmission IF are part of the reverse gear.
Figures 13 and 14 show an embodiment of the transmission system for rear wheel drive. Figures 15 to 30 show further embodiments of the transmission system. The variable speed drives of the transmission systems shown in figures 20 and 22 have an input and an output which arc concentric/coaxial and the input and output have the same direction of rotation.
In the embodiments shown in figures 32 and 34 the variable speed drive is such that it changed the direction of rotation is (for example a cone-ring variable speed drive). This saves one toothed gear reduction.
In the embodiments shown in figures 35 to 45 the transmission system comprises a clutch C2.
The transmission system shown in figures 46 and 47 is a 6/7 speed transmission having a brake B and a clutch C and a single lay- shaft. In total there are 13 gearwheels and a planetary gear set which constitute 8 forward gearwheels, 3 reverse gearwheels, 2 final drive gearwheels and 6 synchronizers (incl. reverse). Electric motor EM is an electric motor-generator which is connected to the third rotational member (sun wheel) of the planetary set. Preferably the electric motor is connected to the sun wheel by means of a chain drive or gear wheel drive. The brake B is optionally because the electric motor EM -when large enough- is also able to support the torque of the combustion engine. With the electric motor EM and the planetary set a so called electric variable transmission is created with which steples scan be switched between ratio's in the transmission. Brake B can be added, for example in line with the shaft of the electric motor EM in case the electric motor is small. The brake B can be a claw to the fixed world of a force closed friction clutch. The electric motor EM is preferably parallel with the shafts of the transmission outside the housing of the transmission. With the electric motor also transmission clutches can be synchronized or synchronization can be supported.
Although the present invention is elucidated above on the basis of the given drawings, it should be noted that this invention is not limited whatsoever to the embodiments shown in the drawings. The invention also extends to all embodiments deviating from the embodiments shown in the drawings within the context defined by the claims.
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