US 12,427,848 B2
Hybrid-electric powertrain and lorry equipped with same
Guenter Kayran, Ostfildern (DE); Jens Luckmann, Winnenden (DE); Detlef Schnitzer, Denkendorf (DE); and Frank Steffens, Ostfildern (DE)
Assigned to Daimler Truck AG, Leinfelden-Echterdingen (DE)
Appl. No. 17/797,879
Filed by Daimler Truck AG, Leinfelden-Echterdingen (DE)
PCT Filed Feb. 2, 2021, PCT No. PCT/EP2021/052401
§ 371(c)(1), (2) Date Aug. 5, 2022,
PCT Pub. No. WO2021/156236, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 10 2020 000 798.8 (DE), filed on Feb. 7, 2020.
Prior Publication US 2023/0059031 A1, Feb. 23, 2023
Int. Cl. B60K 6/405 (2007.10); B60K 6/365 (2007.10); B60K 6/48 (2007.10); B60L 7/10 (2006.01); F16H 57/02 (2012.01); F16H 57/031 (2012.01)
CPC B60K 6/405 (2013.01) [B60K 6/365 (2013.01); B60K 6/48 (2013.01); B60L 7/10 (2013.01); F16H 57/031 (2013.01); B60K 2006/4825 (2013.01); B60Y 2200/92 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02043 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A hybrid-electric powertrain (10), comprising:
an internal combustion engine (12);
a transmission (14) with a transmission housing (16), wherein within the transmission housing (16) is disposed an input-side transmission input shaft (46), a main shaft (47), and an output-side gear set assembly (17);
a transmission housing cover (18) disposed on an output side (19) of the transmission (14) as seen in an axial direction (11);
an electric machine (21) with a stator (22), a rotor (24), and a rotor shaft (26) connected to the rotor (24) for conjoint rotation, wherein the electric machine (21) is connected to the transmission (14) for transmitting a torque from the electric machine (21) to drive wheels via the transmission (14); and
a transmission shaft (42) disposed coaxially to the rotor shaft (26) and coupled or couplable to the rotor shaft (26) with an output gear (44) which is disposed coaxially to the transmission shaft (42), wherein the output gear (44) is configured to transmit the torque from the electric machine (21) into the transmission (14);
wherein the electric machine (21) has a connection housing (30) for connecting the electric machine (21) to the transmission housing (16) and is connected to the transmission (14) for transmitting the torque into the transmission (14);
wherein the rotor shaft (26) of the electric machine (21) is disposed parallel to the transmission input shaft (46) and wherein, seen in the axial direction (11), the transmission input shaft (46), the main shaft (47), and the electric machine (21) are disposed in the claimed order one after the other;
wherein the transmission input shaft (46) is formed separately from the main shaft (47) and is basically rotatable with respect to the main shaft (47) and wherein the output gear (44) is disposed in an axial region of the transmission input shaft (46) or in an axial region of an input side of the main shaft (47).