Hybrid drive train

Patent metadata

Field	Value
Publication number	US-11628717-B2
Application number	US-202017440256-A
Country	US
Kind code	B2
Filing date	Feb 24, 2020
Priority date	Mar 20, 2019
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

A hybrid drive train for a motor vehicle having an internal combustion engine, an electric machine, a first clutch, which is provided for coupling a crankshaft of the internal combustion engine to the rotor, and a second further clutch, which is designed as a wet clutch and which has a clutch cover. A screw connection is provided for non-rotatably connecting the rotor to the clutch cover, which screw connection includes a screw, which is substantially arranged in an axial direction and which at least partially penetrates a connecting piece non-rotatably fastened to the clutch cover.

First claim

The invention claimed is:

1. A hybrid drive train for a motor vehicle, the hybrid drive train comprising:
an internal combustion engine;
an electric machine having a stator and a rotor;
a first clutch, which configured to couple a crankshaft of the internal combustion engine to the rotor;
a further clutch, wherein the further clutch is a wet clutch, is a converter lock-up clutch, and comprises a clutch cover,
wherein a lamella carrier of the first clutch is non-rotatably connected to a rotor support of the rotor of the electric machine,
wherein the rotor support is non-rotatably connected to the rotor and at least partially arranged, in a radial direction, between the rotor and the clutch cover,
wherein the clutch cover and the rotor are arranged coaxially with respect to each other, and the clutch cover is non-rotatably connected to the rotor by
a screw, which is arranged in parallel to an axis of rotation of the rotor and which at least partially penetrates a connecting piece non-rotatably fastened to the clutch cover,
wherein the screw penetrates the rotor in the axial direction.

2. The hybrid drive train of claim 1 , wherein the connecting piece has a metal ring.

3. The hybrid drive train of claim 1 , wherein the screw penetrates the rotor support in the axial direction.

4. The hybrid drive train of claim 1 , wherein the connecting piece is arranged radially surrounding and at least partially axially overlapping the further clutch.

5. The hybrid drive train of claim 1 , wherein the rotor is arranged radially surrounding and at least partially axially overlapping the first clutch.

6. The hybrid drive train of claim 1 , further comprising:
a torque converter, wherein a pump wheel of the torque converter is non-rotatably connected to the clutch cover.

7. The hybrid drive train of claim 6 , wherein the connecting piece is arranged, as seen in the axial direction, between the rotor and the torque converter.

8. The hybrid drive train of claim 1 , wherein the clutch cover is non-rotatably connected to a lamella carrier of the further clutch.

9. The hybrid drive train of claim 1 , wherein the lamella carrier of the first clutch is an outer lamella carrier of the first clutch and is in one piece with the rotor support of the rotor of the electric machine.

Assignees

• Daimler Ag
• Mercedes Benz Group Ag

Inventors

• Velthaus Jan
• Heukelbach Kai
• Lechthaler Thomas
• Rube Lukas
• Ziegler Bernhard
• Koppitz Bernd
• Lange Axel
• Baier Alexander
• Hopp Daniel

Classifications

• B60K6/48 Primary

  Parallel type · CPC title

• B60K2006/4825

  Electric machine connected or connectable to gearbox input shaft · CPC title

• B60K6/405

  Housings · CPC title

• B60K6/387

  Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means · CPC title

• B60K6/40

  characterised by the assembly or relative disposition of components · CPC title