Parallel-shaft transmission assembly with selectable electrification

A vehicle comprising:

• a power-source configured to generate a power-source torque;
• a transmission assembly mounted externally to the power-source and configured to transmit the power-source torque;
• at least one input clutch configured to operatively connect the power-source to the transmission assembly;
• and
• a road wheel configured to receive the power-source torque transmitted by the transmission;
• wherein the transmission assembly includes:
• an input shaft configured to receive the power-source torque via the at least one input clutch;
• an output member configured to transmit a transmission output torque to the road wheel;
• a countershaft driven by and arranged parallel to the input shaft, wherein the countershaft has a first gear-set rotatably mounted thereon and is configured to drive the output member;
• a second gear-set in mesh with the first gear-set and operatively connected to the output member;
• and
• an electric motor configured to be selectively connected to the input shaft via a first torque transfer device and to the output member via a second torque transfer device to thereby provide a variable electric motor torque input to the transmission assembly.