Performance on Regenerative Braking System on a Through-The-Road Hydraulic Hybrid Vehicle
DOI:
https://doi.org/10.37934/arfmts.91.2.6271Keywords:
Regenerative braking, hydraulic hybrid vehicleAbstract
Hydraulic Hybrid Vehicle (HHV) has a great potential to be an efficient drive train for passenger vehicle, yet most of the HHV drive train studies are focused on heavy-duty vehicles. In order to apply the HHV drive train in passenger vehicles, the performance of the regenerative braking system of the through-the-road (TTR) parallel architecture HHV needs to be tested. The performance of the HHV drive train is captured by the overall efficiency of the hydraulic pump and the mechanical efficiency of the hydraulic motor. This paper obtains the efficiencies of the hydraulic pump and motor by building a test rig to measure their torque using load cells. The highest overall efficiency of the pump is 82% and the highest mechanical efficiency of the motor is 74 %. Both highest efficiencies are achieved when the regenerative braking system operates at pressure of 75 bar.