Feasibility study and design of hydraulic hybrid powertrain system for a refuse truck

The aim of this study is to feasibility study and design of hydraulic hybrid power train system for refuse truck in order to regenerate and store kinetic energy and reuse it for supplying propulsion power of vehicle. The hydraulic hybrid propulsion system includes a conventional internal combustion engine, a hydraulic pump/motor and also the accumulators as the energy storage device. Here, the parallel configuration has been chosen for implementing this powertrain. At first part of the paper, regarding the unique driving trends of refuse trucks, a driving cycle for refuse truck in Tehran has been extracted to improve the reliability of the designed powertrain. Also, AXOR 1828, one of the trucks used as the refuse vehicles in Tehran, has been chosen as the based vehicle. The driving cycle is extracted by performing observations on the based vehicle operation during several days. In the second part of the paper, the components of hydraulic hybrid powertrain have been designed to recuperate as much kinetic energy as possible in the refuse truck driving cycle. The initial computations show 17 percent reduction in fuel consumption of the refuse truck.