US 12,337,691 B2
Torque transmission unit, drive train and method for operating a torque transmission unit
Benjamin Vögtle, Weingarten (DE); and Stephan Maienschein, Baden-Baden (DE)
Assigned to Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
Appl. No. 17/770,662
Filed by Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
PCT Filed Jul. 23, 2020, PCT No. PCT/DE2020/100654
§ 371(c)(1), (2) Date Apr. 21, 2022,
PCT Pub. No. WO2021/078320, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 10 2019 128 609.3 (DE), filed on Oct. 23, 2019.
Prior Publication US 2022/0379709 A1, Dec. 1, 2022
Int. Cl. B60K 6/383 (2007.10); B60K 6/387 (2007.10); B60K 6/40 (2007.10); F16H 45/02 (2006.01); B60K 6/442 (2007.10); F16H 45/00 (2006.01)
CPC B60K 6/387 (2013.01) [B60K 6/383 (2013.01); B60K 6/40 (2013.01); F16H 45/02 (2013.01); B60K 6/442 (2013.01); B60Y 2200/92 (2013.01); F16H 2045/005 (2013.01); F16H 2045/0226 (2013.01); F16H 2045/0252 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A torque transmission unit, comprising:
a first input side mounted rotatably about an axis of rotation, a second input side, an output side, a hydrodynamic converter, a lock-up clutch, and a freewheel;
the first input side being configured to receive a first torque;
the second input side being configured to receive a second torque;
and
the lock-up clutch being arranged to be parallel to the hydrodynamic converter;
wherein the freewheel is downstream of the hydrodynamic converter, and the second input side is downstream of the freewheel in a torque flow of the first torque from the first input side to the output side;
wherein the freewheel is selectively operatable between a first freewheel operating state and a second freewheel operating state,
wherein the freewheel is designed to connect, in a torque-locking manner, the hydrodynamic converter to the output side in the first freewheel operating state of the freewheel to transmit the first torque from the first input side to the output side when the lock-up clutch is open;
wherein the freewheel is designed to decouple the hydrodynamic converter from the output side in the second freewheel operating state to at least partially prevent torque transmission of the second torque from the second input side to the hydrodynamic converter.