US 12,252,016 B2
Hybrid drive system for a motor vehicle
Kai Heukelbach, Koengen (DE); Bernd Koppitz, Winterbach (DE); Bernhard Ziegler, Rechberghausen (DE); Jan Velthaus, Stuttgart (DE); Lukas Rube, Pluederhausen (DE); and Thomas Lechthaler, Stuttgart (DE)
Assigned to Mercedes-Benz Group AG, Stuttgart (DE)
Appl. No. 18/294,440
Filed by Mercedes-Benz Group AG, Stuttgart (DE)
PCT Filed Jul. 26, 2022, PCT No. PCT/EP2022/070957
§ 371(c)(1), (2) Date Feb. 1, 2024,
PCT Pub. No. WO2023/011989, PCT Pub. Date Feb. 9, 2023.
Claims priority of application No. 10 2021 003 958.0 (DE), filed on Aug. 2, 2021.
Prior Publication US 2024/0336126 A1, Oct. 10, 2024
Int. Cl. B60K 6/387 (2007.10); F16D 25/0638 (2006.01); H02K 7/00 (2006.01); H02K 7/10 (2006.01); H02K 7/108 (2006.01); H02K 9/19 (2006.01); F16D 13/72 (2006.01); F16H 45/02 (2006.01)
CPC B60K 6/387 (2013.01) [F16D 25/0638 (2013.01); H02K 7/006 (2013.01); H02K 7/10 (2013.01); H02K 7/108 (2013.01); H02K 9/19 (2013.01); B60Y 2400/42 (2013.01); B60Y 2400/426 (2013.01); F16D 13/72 (2013.01); F16H 45/02 (2013.01); F16H 2045/0284 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A hybrid drive system (10) for a motor vehicle, comprising:
an input shaft (14) which is rotatably mounted around an axis of rotation (12) and via which torques provided by an internal combustion engine are introducible into the hybrid drive system (10);
an output drive shaft (18) disposed coaxially with the input shaft (14);
an electric machine (20) which has a stator (22) and a rotor (23);
a torque converter (24) which has an impeller (26), a converter cover (28) connected to the impeller (26) in a manner fixed against rotation, an interior (32) for receiving oil and which is at least partially and directly delimited by the impeller (26), and a converter hub (30) which is connected to the converter cover (28) in a manner fixed against rotation, wherein the converter hub (30) is connected to the rotor (23) in a manner fixed against rotation;
a separable clutch (34) having a disc pack (36), a clutch chamber (38) in which the disc pack (36) is received, an operating piston (40), and an associated operating chamber (42); and
a cooling oil conduit (42) that is a direct connecting conduit between the interior (32) of the torque converter (24) and the clutch chamber (38) of the separable clutch (34) and runs within the converter hub (30), wherein via the cooling oil conduit (42) the disc pack (36) of the separable clutch (34) and the electric machine (20) are suppliable with the oil as cooling oil from the interior (32) of the torque converter (24).