Compact Hybrid Transmission in a Composite Design

A hybrid transmission (18) for a motor vehicle drive train (12) of a motor vehicle (10), comprising:

• a first transmission input shaft (24) configured for operatively connecting the hybrid transmission to an internal combustion engine (16) of the motor vehicle;
• a second transmission input shaft (26) configured for operatively connecting the hybrid transmission to a first electric prime mover (14) of the motor vehicle;
• an output shaft (28) configured for operatively connecting the hybrid transmission to a drive output (32);
• a planetary gear set (RS) connected to the second transmission input shaft (26) and to the output shaft (28);
• a plurality of spur gear pairs (ST1, ST2, ST3) arranged in multiple gear set planes for forming gear steps;
• and
• a plurality of sift elements (A, B, C, D, E) for engaging the gear steps,
• wherein the output shaft (28) is of a countershaft design;
• and
• wherein the planetary gear set is interlockable when decoupled from the first transmission input shaft (26).