HYBRID MODULE FOR A MOTOR VEHICLE

Abstract

A hybrid module for a motor vehicle power train, including an input side for connecting to an internal combustion engine, an output side for connecting to a drive wheel, an electric drive motor comprising a stator and a rotor and a torque transfer device arranged between the roto and the output side. The transfer device is designed to reduce rotational irregularity.

Claims

1-12. (canceled)

11. A hybrid module for a power train of a motor vehicle, comprising: an input side for connection to an internal combustion engine; an output side for connection to a drive wheel; an electrical drive motor including a stator and a rotor; and, a first torque transfer device including: a first centrifugal pendulum connected to the rotor and including a first pendulum mass; or, a first torsion damper with a first elastic element, the first torsion damper between the rotor and the output side and connected to the rotor.

12. The hybrid module of claim 11, further comprising: a separable coupling located between the input side and the rotor and connected to the rotor.

13. The hybrid module of claim 12, wherein: the first torque transfer device includes the first centrifugal pendulum; and, the first centrifugal pendulum is between the rotor and the output side and is connected to the output side.

14. The hybrid module of claim 12, wherein the first torque transfer device includes the first torsion damper, the hybrid module further comprising: a second torsion damper with a second elastic element, the second torsion damper located between the first torsion damper and the output side and connected to the output side; and, a flange located between the first torsion damper and the second torsion damper and connected to the first torsion damper and the second torsion damper.

15. The hybrid module of claim 12, wherein the first torque transfer device includes the first torsion damper, the hybrid module further comprising: a second centrifugal pendulum connected to the rotor and in parallel to the first torsion damper.

16. The hybrid module of claim 15, further comprising: a second torsion damper with a second elastic element; and, a flange, wherein: the second torsion damper is located between the first torsion damper and the output side and is connected to the output side; and, the flange is located between the first torsion damper and the second torsion damper and is connected to the first torsion damper and the second torsion damper.

17. The hybrid module of claim 12, wherein the first torque transfer device includes the first centrifugal pendulum and the first torsion damper, the hybrid module further comprising: a second torsion damper with a second elastic element; and, a flange, wherein: the first torsion damper is between the first centrifugal pendulum and the second torsion damper and is connected to first centrifugal pendulum; and, the second torsion damper is between the flange and the output side and is connected to the flange and the output side.

18. The hybrid module of claim 12, wherein the first torque transfer device includes the first centrifugal pendulum, the hybrid module further comprising: a flange located between the rotor and the output side and connected to the rotor and the output side, wherein the first centrifugal pendulum is in parallel to the flange.

19. The hybrid module of claim 12, wherein the first torque transfer device includes the first centrifugal pendulum, the hybrid module further comprising: a second torque transfer device, wherein: the second transfer device includes a second torsion damper with a second elastic element; and, the second torsion damper is located between the input side and the separable coupling and is connected to the input side.

19. The hybrid module of claim 12, wherein the first torque transfer device includes the first centrifugal pendulum, the hybrid module further comprising: a second torque transfer device, wherein: the second transfer device includes a second centrifugal pendulum located between the input side and the separable coupling and connected to the separable coupling.

20. The hybrid module of claim 12, wherein the first torque transfer device includes the first centrifugal pendulum, the hybrid module further comprising: a second torque transfer device, wherein: the second transfer device includes: a second torsion damper with a second elastic element; and, a second centrifugal pendulum; the second torsion damper is located between the input side and the second centrifugal pendulum and connected to the input side and the second centrifugal pendulum; and, the second centrifugal pendulum is located between the second torsion damper and the separable coupling and is connected to the second torsion damper and the separable coupling.

21. A hybrid module for a power train of a motor vehicle, comprising: an input side for connection to an internal combustion engine; an output side for connection to a drive wheel; an electrical drive motor including a stator and a rotor; an centrifugal pendulum including a pendulum mass, the centrifugal pendulum located between the rotor and the output side and connected to the rotor and the output side; and, a separable coupling located between the input side and the rotor and connected to the input side and the rotor.

22. A hybrid module for a power train of a motor vehicle, comprising: an input side for connection to an internal combustion engine; an output side for connection to a drive wheel; an electrical drive motor including a stator and a rotor; a separable coupling located between the input side and the rotor and connected to the rotor. a torsion damper with an elastic element, the torsion damper located between the input side and the separable coupling and connected to the input side; a first centrifugal pendulum including a first pendulum mass, the first centrifugal pendulum located between the torsion damper and separable coupling and connected to the torsion damper and the separable coupling; and, a second centrifugal pendulum located between the rotor and the output side and connected to the rotor and the output side.

23. A method of using the hybrid module recited in claim 13, comprising: connecting the input side to the internal combustion engine; connecting the output side to the drive wheel; connecting the first centrifugal pendulum to the output side; closing the separable coupling; flowing first torque from the internal combustion engine to the output side through, in sequence, the separable couple, the rotor and the first centrifugal pendulum; and, reducing, with the first centrifugal pendulum, first rotational oscillations at the output side.

24. The method of claim 23, further comprising: opening the separable coupling; isolating the rotor from the internal combustion engine; flowing torque from the internal combustion engine to the output side through, in sequence, the separable couple, the rotor, the first torsion damper, the flange, and the second torsion damper; and, reducing oscillations at the output side, using the first torsion damper, the flange, and the second torsion damper.

25. A method of using the hybrid module recited in claim 14, comprising: connecting the input side to the internal combustion engine; connecting the output side to the drive wheel; closing the separable coupling; flowing torque from the internal combustion engine to the output side through, in sequence, the separable coupling, the rotor, the first torsion damper, the flange, and the second torsion damper; and, reducing, with the first torsion damper, and the second torsion damper, rotational oscillations at the output side.

26. A method of using the hybrid module recited in claim 16, comprising: connecting the input side to the internal combustion engine; connecting the output side to the drive wheel; closing the separable coupling; flowing torque from the internal combustion engine to the output side through, in sequence, the separable coupling, the rotor, the first torsion damper, the flange, and the second torsion damper; and, reducing, with the second centrifugal pendulum, the first torsion damper, and the second torsion damper, rotational oscillations at the output side.

27. A method of using the hybrid module recited in claim 17, comprising: connecting the input side to the internal combustion engine; connecting the output side to the drive wheel; closing the separable coupling; flowing torque from the internal combustion engine to the output side through, in sequence, the separable coupling, the rotor, the first centrifugal pendulum, the first torsion damper, the flange, and the second torsion damper; and, reducing, with the first centrifugal pendulum, the first torsion damper, and the second torsion damper, rotational oscillations at the output side.

28. A method of using the hybrid module recited in claim 18, comprising: connecting the input side to the internal combustion engine; connecting the output side to the drive wheel; closing the separable coupling; flowing torque from the internal combustion engine to the output side through the flange; and, reducing, with the first centrifugal pendulum, rotational oscillations at the output side.

29. A method of using the hybrid module recited in claim 23, comprising: connecting the input side to the internal combustion engine; connecting the output side to the drive wheel; connecting the first torsion damper to the rotor; closing the separable coupling; flowing torque from the internal combustion engine to the output side through, in sequence, the torsion damper, the first centrifugal pendulum, the separable coupling, the rotor, and the second centrifugal pendulum; and, reducing, with the torsion damper, the first centrifugal pendulum, and the second centrifugal pendulum, rotational oscillations at the output side.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The invention will now be described in detail with reference made to the attached figures, in which:

[0024] FIG. 1 shows a power train with a hybrid module for being inserted into a motor vehicle;

[0025] FIG. 2 shows the power train in FIG. 1 with an alternative embodiment of the hybrid module;

[0026] FIG. 3 shows variants of a transmission device for torques for the hybrid module of FIGS. 1 and 2;

[0027] FIG. 4 shows variants of a centrifugal pendulum as a transmission device for torques for the hybrid module of FIG. 1 or 2;

[0028] FIG. 5 shows an exemplary embodiment for a hybrid module;

[0029] FIG. 6 shows an exemplary embodiment for a centrifugal pendulum as transfer device for torques in a hybrid module; and

[0030] FIG. 7 shows an exemplary embodiment for a rotating oscillation damper as transfer device for torques in a hybrid module.

DETAILED DESCRIPTION

[0031] FIG. 1 shows power train 100, for example in a motor vehicle. Power train 100 includes internal combustion engine 105, hybrid module 110, optional transmission 115 and drive wheel 120. Transmission 115 is, for example, a partially or completely automatic transmission, for example, a double coupling transmission, a stepped automatic transmission or a Continuously Variable Transmission, (CVT). Torsion dampers or rotary oscillation dampers 125 are provided at different locations on the power train 100, for example, between hybrid module 110 and transmission 115, or between transmission 115 and drive wheel 120.

[0032] Hybrid module 110 includes input side 130 for the connection to internal combustion engine 105, and output side 135 for the connection to the part of power train 100 running to drive wheel 120. Electromotor 140 with stator 145 and rotor 150 is provided as an electrical drive motor for the motor vehicle. Separable coupling 155 and transfer device 160 for torque are provided. Coupling 155 is arranged between input side 130 and rotor 150 of electromotor 140, and is arranged to to interrupt a torque flow in power train 100 as a function of an activation. Transfer device 160 is arranged between rotor 150 of electromotor 140 and output side 135.

[0033] In the example embodiment of FIG. 1, electromotor 140 includes stator 145 lies radially outside and rotor 150 lies radially inside. In an example embodiment (not shown) the inverse arrangement is selected. Transfer device 160 is designed to reduce a rotational irregularity, which can be superposed on the rotary movement of output side 135. As further described below, transfer device 160 can be a centrifugal pendulum or a torsion damper.

[0034] FIG. 2 shows power train 100 of FIG. 1 with an alternative embodiment of hybrid module 110. In distinction to the embodiment shown in FIG. 1, transfer device 205 is present here, between the input side 130 and coupling 155, in addition to transfer device 160. In an example embodiment, transfer device 205 includes rotary oscillation damper 210, centrifugal pendulum 215 or, as shown, a combination of damper 210 and pendulum 215. Rotary oscillation damper 210 shown includes elastic element 220, which is designed to allow a predetermined rotation, between input side 130 and a slide connected to coupling 155.

[0035] In an example embodiment, elastic element 220 is, as indicated, designed as a bent spring or as a cylindrical spring lying radially inward or radially outward. Other embodiments are described in more detail below with reference made to FIG. 3. Otherwise, the same possibilities for variation as for the other transfer device 205 apply to transmission device 160 and inversely.

[0036] FIG. 3 shows variants of transfer device 160 for hybrid module 110 of FIGS. 1 and 2.

[0037] In the embodiment shown on the left in FIG. 3, two rotary oscillation dampers 210 are arranged in series between rotor 150 of electromotor 140 and output side 135. In an example embodiment, flange 305 is provided between rotary oscillation dampers 210. Rotary oscillation dampers 210 each comprise elastic element 220 of which each one is constructed alternatively as a bent spring or as a cylindrical spring. In one embodiment, both elastic elements 220 are constructed as cylindrical springs. One elastic element 220 is attached radially inward and one element 220 is attached radially outward to the flange part 105.

[0038] In the central embodiment of FIG. 3, centrifugal pendulum 215 is connected to rotor 150 of electromotor 140. Centrifugal pendulum 215 includes pendulum flange 310 connected to rotor 150, and includes pendulum mass 315, which is shiftably fastened in the plane of rotation of pendulum flange 310 to mass 315. In the embodiment of FIG. 3B, pendulum flange 310 lies outside of the torque flow between rotor 150 and output side 135 and, expressed more generally, outside of the torque flow between internal combustion engine 105 and drive wheel 120.

[0039] The embodiment shown on the right in FIG. 3, centrifugal pendulum 215 is not parallel to rotary oscillation damper 210, but is connected in series so that pendulum flange 310 lies in the transferred torque flow.

[0040] FIG. 4 shows variants of centrifugal pendulum 215 as transfer device 160 for torques for hybrid module 110 of FIG. 1 or 2. In the embodiment shown in the upper area of FIG. 4, pendulum flange 310 is parallel to flange 305, which leads output side 135, and is connected to rotor 150 of electromotor 140. The torque flowing between input side 130 and output side 135 does not flow through pendulum flange 310.

[0041] In the embodiment shown in the lower area of FIG. 4, flange 305 and pendulum flange 310 coincide so that pendulum flange 310 of centrifugal pendulum 215 lies in the torque flow between input side 130 and output side 135 of hybrid module 110.

[0042] FIG. 5 shows an exemplary embodiment for hybrid module 110. The embodiment shown substantially corresponds to the one in FIG. 2. Input side 130 for the connection to internal combustion engine 105 is shown on the left. From input side 130, the torque flow goes radially outward and via elastic element 220, designed by way of example as a bent spring of rotary oscillation damper 210, to pendulum flange 310 of centrifugal pendulum 215. Pendulum mass 315 of centrifugal pendulum 215 is constructed purely by way of example lying axially on the inside, as will be explained in more detail below with reference made to FIG. 6.

[0043] On the radial inside of pendulum flange 310 the torque flow runs via shaft 405 axially to the right in the representation and then via flange 305 radially outward to coupling 155. Coupling 155 is constructed by way of example as a wet-running multi-disk laminar coupling. Coupling 155 is. in a example embodiment, located radially inside rotor 150 of electromotor 140. Lamellae and frictional elements of coupling 155 are axially pressed against each other by activation device 410 constructed by way of example as a hydraulic activation device in order to forward the torque flow to rotor 150 of electromotor 140.

[0044] Transfer device 160, which is constructed as centrifugal pendulum 215, is also connected to rotor 150. Pendulum flange 310 of centrifugal pendulum 215 runs radially inward to output side 135 of hybrid module 110. Centrifugal pendulum 215 also includes, by way of example, axially inwardly located pendulum mass 315.

[0045] FIG. 6 shows an exemplary embodiment for centrifugal pendulum 215 as transfer device 205 or 160 in hybrid module 110 of FIG. 1 or 2. In FIG. 6, pendulum mass 315 lying axially outside is used, which comprises two pendulum elements 605, which lie on different axial sides of pendulum flange 310 and are connected to one another.

[0046] FIG. 7 shows an exemplary embodiment for rotary oscillation damper 210 as transfer device 205 or 160 in hybrid module 110 of FIG. 1 or 2. Elastic element 220 is constructed in FIG. 7 as a cylindrical spring. An arrangement of several cylindrical springs can also be used, for example, two coaxial cylindrical springs connected in parallel, as shown.

LIST OF REFERENCE NUMERALS

[0047] 100 power train [0048] 105 internal combustion engine [0049] 110 hybrid module [0050] 115 transmission [0051] 120 drive wheel [0052] 125 rotary oscillation damper [0053] 130 input side [0054] 135 output side [0055] 140 electromotor [0056] 145 stator [0057] 150 rotor [0058] 155 coupling [0059] 160 torque transfer device [0060] 205 torque transfer device [0061] 210 rotary oscillation damper [0062] 215 centrifugal pendulum [0063] 220 elastic element [0064] 305 flange [0065] 310 pendulum flange [0066] 315 pendulum mass [0067] 405 shaft [0068] 410 activation device