Technician A says that a series hydraulic hybrid (SHH) drive options either direct mechanical or full hydraulic motor drive. Technician B says that the Eaton HLA is a parallel hydraulic hybrid (PHH) system. Who is correct?

Question

Quizplus · Accepted Answer

Technician B is correct because the Eaton Hydraulic Launch Assist (HLA) system is indeed a parallel hydraulic hybrid (PHH) system, which means it works alongside the conventional powertrain to provide additional power. Technician A's statement is incorrect because a series hydraulic hybrid system does not offer a direct mechanical drive option; it operates by converting mechanical energy into hydraulic energy and then back into mechanical energy to drive the wheels.

Technician a Says That a Series Hydraulic Hybrid (SHH) Drive