Publication: Integration of through-the-road parallel architecture hydraulic hybrid vehicle
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Date
2023-07-01
Authors
Tan Pe Hao
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Abstract
This study focuses on the installation of the hydraulic hybrid drive train into a
conventional vehicle and fuel economy performance of the Through-The-Road (TTR)
Hydraulic Hybrid Vehicle (HHV). TTR is a type of parallel hybrid architecture that
connects the conventional drive train and the hybrid drive train via road. The hydraulic
hybrid drive train that was previously on a test rig was installed into the vehicle to be
road-tested. The fuel economy is compared by testing the vehicle with and without the
hydraulic hybrid mode. Different tests were conducted including acceleration and
deceleration test as well as drive cycle test. From the acceleration and deceleration test,
the optimum charging pressure was determined as 140 bars, where the acceleration
test shows 7.8% improvement in fuel economy while comparing to the conventional
vehicle. The drive cycle test at 100 bars charging pressure shows hydraulic Hybrid On
mode provides 8% fuel economy improvement comparing to the Hybrid Off mode