Dynamic powertrain trim template selection and vehicle fleet optimization

A system comprising:

• a prime mover including an output shaft structured to output torque;
• an accessory drive system including a first accessory drive member fixedly coupled with and structured to be driven by torque from the output shaft, a second accessory drive member structured to be selectably coupled with and selectably driven by torque from the output shaft, and an electronically controllable electromagnetic clutch including a friction plate provided internally within the accessory drive system and structured to selectably couple and decouple the second accessory drive member with the output shaft via electromagnetically induced axial motion of the friction plate between a first axial position wherein the friction plate is spaced apart from an opposing surface of the second accessory drive member and a second axial position wherein the friction plate contacts the opposing surface of the second accessory drive member;
• and
• a controller in operative communication with the prime mover system and structured to selectably control the electromagnetic clutch to move the friction plate between the first position and the second position.

A method comprising:

• operating a system including internal combustion engine including an output shaft, a pulley system structured to be driven by the output shaft, a first alternator and a second alternator structured to be driven by the pulley system, and an electromagnetic clutch integrated within one of the pulley system, the first alternator and the second alternator and structured to selectably couple and decouple at least one of the first alternator and the second alternator from the output shaft;
• evaluating an electrical power requirement of the system and an electrical power capacity of the system;
• commanding engagement of the electromagnetic clutch effective to operate the second alternator in response to the evaluation to indicating a need for increased electrical power;
• and
• commanding disengagement of the electromagnetic clutch effective disengage engage the second alternator in response to the evaluation to indicating a need for increased electrical power.