Power-Split Hybrid Electric Powertrain Design with Two Planetary Gearsets for Light-Duty Truck Applications

The goal of this paper is to study all feasible power-split hybrid electric powertrains with two simple planetary gearsets (PGs) that can meet light-duty truck requirements. The powertrains are explored and designed using a holistic approach, which includes automated system configuration search, automated static and dynamic equation derivation, practicality check, mode transitionability analysis, powertrain performance analyses including gradeability, launch torque, overtaking torque, 0-60mph time and fuel economy improvement potential. In the end, four two-mode power-split hybrid electric powertrains that meet all the requirements are identified.