US 12,459,345 B2
Hybrid drive system
Carsten Gitt, Stuttgart (DE); Tobias Haerter, Stuttgart (DE); Peter Hahn, Stuttgart (DE); Andreas Kolb, Wernau (DE); Klaus Riedl, Tübingen (DE); Tobias Schilder, Ludwigsburg (DE); and Jonathan Zeibig, Aalen (DE)
Assigned to MERCEDES-BENZ GROUP AG, Stuttgart (DE)
Appl. No. 18/281,052
Filed by MERCEDES-BENZ GROUP AG, Stuttgart (DE)
PCT Filed Jan. 28, 2022, PCT No. PCT/EP2022/052033
§ 371(c)(1), (2) Date Sep. 8, 2023,
PCT Pub. No. WO2022/189065, PCT Pub. Date Sep. 15, 2022.
Claims priority of application No. 10 2021 001 315.8 (DE), filed on Mar. 11, 2021.
Prior Publication US 2024/0308324 A1, Sep. 19, 2024
Int. Cl. B60K 6/365 (2007.10); B60K 6/387 (2007.10); B60K 6/547 (2007.10)
CPC B60K 6/365 (2013.01) [B60K 6/387 (2013.01); B60K 6/547 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A hybrid drive system, comprising:
an internal combustion engine;
an electric motor;
a first spur gear component transmission and a second spur gear component transmission, wherein the first and second spur gear components drive at least one countershaft; and
a planetary gear set arranged coaxially to a crankshaft of the internal combustion engine, wherein the planetary gear set includes a first shaft, a second shaft, a third shaft, and a fourth shaft,
wherein the first shaft of the planetary gear set is coupled or couplable with the crankshaft of the internal combustion engine such that torsional moments originating from the internal combustion engine are introducible into the planetary gear set via the first shaft of the planetary gear set,
wherein a rotor of the electric motor is coupled or couplable with the second shaft of the planetary gear set such that torsional moments originating from the rotor are introducible into the planetary gear set via the second shaft of the planetary gear set, wherein a first input shaft of the first spur gear component transmission is connected in a manner fixed against rotation with the third shaft of the planetary gear set,
wherein a second input shaft of the second spur gear component transmission is connected in a manner fixed against rotation with the fourth shaft of the planetary gear set,
wherein the first and second spur gear component transmissions each have exactly one spur gear pairing,
wherein an interlock switch element, which is configured to establish the rotationally fixed connection of the third and fourth shafts of the planetary gear set, is arranged between the exactly one gear pairing of the first and second spur gear component transmissions in an axial direction, seen relative to an axis of rotation of the input shafts, and
wherein the at least one countershaft is exactly one countershaft, which has an output gear connected to the exactly one countershaft in a manner fixed against rotation, wherein the output gear is arranged overlapping the planetary gear set relative to the axial direction.