Hybrid module for a drive train of a motor vehicle

Abstract

A hybrid module is compact and easy to construct, with components for transmitting torque to at least one transmission input shaft. The disclosed hybrid module includes a counterplate, or at least one counterplate in the case of multiple counterplates, of a clutch device is connected to a rotor element. The connection may be a direct connection, or a connection without intermediate elements, in which no intermediate element is provided for bridging an axial spacing between the rotor and the counterplate. Thus, coupling of an electric machine of the hybrid module and of the clutch device is realized with a minimal structural space requirement. By means of this measure, the clutch device can project into a stator of the electric machine.

Claims

1. A hybrid module for a drivetrain of a motor vehicle comprising: a rotor element arranged to be driven by an electric machine; a separating clutch comprising a first pressure plate and a first counterplate; and a clutch device comprising a first clutch and a second clutch, wherein the separating clutch is arranged within the rotor element; the clutch device includes a second pressure plate and the first counterplate; the first counterplate comprises a first face for receiving a torque from the separating clutch and a second face for transmitting the torque to the first clutch; and, the first counterplate is connected to the rotor element.

2. The hybrid module of claim 1, wherein: the rotor element comprises a rotor lamination; and, the first counterplate is directly connected to the rotor lamination.

3. The hybrid module of claim 1, wherein: the first counterplate is connected to the rotor element by a welded connection, a riveted connection, or a screwed connection.

4. The hybrid module of claim 1, further comprising a second counterplate and an intermediate element, wherein the intermediate element connects the second counterplate to the first counterplate and the rotor element.

5. The hybrid module of claim 1, further comprising a housing unit, wherein: the rotor element comprises a central bearing device; the rotor element, the separating clutch, and the first counterplate comprise a functional unit; and, the functional unit is rotatably mounted in the housing unit by the central bearing device.

6. The hybrid module of claim 1, wherein the separating clutch is a hydraulically actuable clutch.

7. The hybrid module of claim 1, further comprising a concentric slave cylinder for actuating the separating clutch.

8. A drivetrain for a motor vehicle comprising: the electric machine; an internal combustion engine; a transmission; and, the hybrid module of claim 1.

9. The hybrid module of claim 1 wherein the first counterplate is an annular disk.

10. The hybrid module of claim 1 wherein the first counterplate comprises a thickness and the first face is axially offset from the second face by the thickness.

11. A hybrid module for a drivetrain of a motor vehicle comprising: a rotor element arranged to be driven by an electric machine; a separating clutch comprising a first pressure plate and a first counterplate; a dual-mass flywheel connected upstream of the separating clutch in the drivetrain; and a clutch device comprising a first clutch, wherein the separating clutch is arranged within the rotor element; the clutch device includes a second pressure plate and the first counterplate; the first counterplate comprises a first face for receiving a torque from the separating clutch and a second face for transmitting the torque to the first clutch; and, the first counterplate is connected to the rotor element.

12. The hybrid module of claim 11, wherein: the rotor element comprises a rotor lamination; and, the first counterplate is directly connected to the rotor lamination.

13. The hybrid module of claim 11, wherein: the first counterplate is connected to the rotor element by a welded connection, a riveted connection, or a screwed connection.

14. The hybrid module of claim 11, wherein the clutch device comprises a second clutch.

15. The hybrid module of claim 14, further comprising a second counterplate and an intermediate element, wherein the intermediate element connects the second counterplate to the first counterplate and the rotor element.

16. The hybrid module of claim 11, further comprising a housing unit, wherein: the rotor element comprises a central bearing device; the rotor element, the separating clutch, and the first counterplate comprise a functional unit; and, the functional unit is rotatably mounted in the housing unit by the central bearing device.

17. The hybrid module of claim 11, wherein the separating clutch is a hydraulically actuable clutch.

18. The hybrid module of claim 11, further comprising a concentric slave cylinder for actuating the separating clutch.

19. The hybrid module of claim 11 wherein the first counterplate is an annular disk.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) An embodiment, to which this disclosure is however not restricted and from which further features according to the disclosure can emerge, is shown in the following FIGURE.

(2) The FIGURE shows a hybrid module according to an example embodiment.

DETAILED DESCRIPTION

(3) The FIGURE shows a part of a drivetrain 10 of a motor vehicle in a sectional illustration. In the drivetrain 10, an electric machine 12 is arranged between an internal combustion engine (not shown) and a transmission (likewise not shown). The electric machine 12 serves as drive machine and is part of a hybrid module 14. Said hybrid module 14 has the following main components: (i) a functional unit 16 having a rotor element 18 formed as a rotor of the electric machine 12, having a separating clutch 20 arranged within the rotor element 18 and having at least one clutch part 22, which is connected rotationally conjointly to the rotor element 18, of a clutch device 24, (ii) a housing unit 28 which partially accommodates the module unit 16 and a stator 26 of the electric machine 12, (iii) a dual-mass flywheel 30 which is connected upstream of the separating clutch 20 in the drivetrain 10, and (iv) a housing part, which accommodates the starting clutch 24, of the transmission 32. The clutch device 24 is formed as a dual clutch 34. Accordingly, the transmission is formed as a dual-clutch transmission, of which only the two transmission input shafts 36, 38 are illustrated.

(4) The following path of the drivetrain is realized: Output shaft 40 of the internal combustion enginedual-mass flywheel 30separating clutch 20rotor element 18 (in this case rotor of the electric machine 12 formed as an internal-rotor machine)clutch device 24transmission input shaft 36, 38. Here, the corresponding shafts 36, 38, 40 lie on a common axis 42, which forms the main axis of the hybrid module 14.

(5) The clutch device 24, which is formed as a dual clutch 34, has two clutches 44, 46 with corresponding pressure plates 48, counterplates 50, clutch disks 52 and actuation devices.

(6) The rotor element 18 has, in its interior, a rotor bearing arrangement 54 which serves as central bearing device 56, by means of which the entire module unit 16 is rotatably mounted in the housing unit 28. The rotationally conjoint connection between rotor element 18 and clutch part 22 is in this example realized as a direct connection 60 between a rotor lamination 58 of the rotor element 18 and one of the counterplates 50 of the starting clutch 24, specifically the counterplate of the first clutch 44. Between the rotor element 18 and another counterplate 50, that is to say the counterplate of the second clutch 46, a connection is realized by means of intermediate elements 62. The counterplate 50 of the first clutch 44 and the counterplate 50 of the second clutch 46 are thus also connected to one another via said intermediate elements 62.

(7) The separating clutch 20 is hydraulically actuable. The separating clutch 20 has a pressure plate 64 and a counterplate 66 and is actuated by means of a disengagement device 68 via a pressure connector 70. The disengagement device 68 has a disengagement bearing, a central disengagement unit with a piston for transmitting force to the disengagement bearing, and a pressure pot for transmitting force from the disengagement bearing to the pressure plate of the separating clutch 20. The transmission of force by means of said pressure pot is a transmission of force without a lever action.

(8) One of the counterplates 50 of the clutch device 24 is connected to the rotor element 18. The connection of said one counterplate 50 of the clutch device 24 to the rotor element 18 is in this case a connection in which no intermediate element is provided for bridging an axial spacing between rotor element 18 or separating clutch 20 and the counterplate 50 of the clutch device 24 (direct connection, or connection without intermediate elements). Thus, coupling of the electric machine 12 and of the separating clutch 20 of the hybrid module 14 and of the starting clutch 24 is realized with a minimal (axial) structural space requirement. By means of this measure, the clutch device 24 can project into the stator 26 of the electric machine 12.

LIST OF REFERENCE DESIGNATIONS

(9) 10 Drivetrain

(10) 12 Machine, electric

(11) 14 Hybrid module

(12) 16 Functional unit

(13) 18 Rotor element

(14) 20 Separating clutch

(15) 22 Clutch part

(16) 24 Clutch device

(17) 26 Stator, electric machine

(18) 28 Housing unit

(19) 30 Dual-mass flywheel

(20) 32 Housing part (transmission)

(21) 34 Dual clutch

(22) 36 Transmission input shaft, first

(23) 38 Transmission input shaft, second

(24) 40 Output shaft

(25) 42 Axis

(26) 44 Clutch, first

(27) 46 Clutch, second

(28) 48 Pressure plate

(29) 50 Counterplate

(30) 52 Clutch disk

(31) 54 Rotor bearing arrangement

(32) 56 Bearing device, central (module unit)

(33) 58 Rotor lamination

(34) 60 Connection

(35) 62 Intermediate element

(36) 64 Pressure plate (separating clutch)

(37) 66 Counterplate (separating clutch)

(38) 68 Disengagement device

(39) 70 Pressure connector

(40) 72 Component, common