ABSTRACT
There are many possibilities of configurations in a parallel hybrid drivetrain, as mentioned in Chapter 5. The design methodology for one configuration may not be applicable to others. Each particular configuration may be only applicable to the specified operation environment and mission requirement. This chapter will focus on the design methodology of parallel drivetrains with torque coupling, which operates with the electrically peaking principle. That is, the engine supplies its power to meet the base load (operating at a given constant speed on flat and mild grade roads, or the average of the load of a stop-and-go driving pattern), and the electric motor supplies the power to meet the peak load requirement.
