Analysis and Model Validation of the Toyota Prius Prime 2019-01-0369
Argonne National Laboratory (ANL) has researched about various types of electric vehicles such as hybrid electric vehicle (HEV), plug-in HEV (PEV), range-extedned electric vehicle (EREV), and so on. The research includes anlysis of operating and control characteristics, developments of components and vehicle models in Autonomie, a vehicle simulation software developed by ANL and validations with test data [1-5]. Argonne’s Advanced Powertrain Research Facility (APRF) is facilitated two-wheel and four-wheel drive dynamometers, of which environmental chamber temperature can be controlled . Toyota Prius Prime is a new generation of Toyota PHEV of which electric drive range is 25 miles. The main improvement from the former PHEV system is the possibility of power support by generator in EV mode by adding one way clutch to engine side [7-8]. The powertrain and vehicle model were newly developed and implemented into Autonomie, a high-fidelity, forward-looking vehicle simulation tool that can estimate various types of vehicle performances especially fuel economy . Especially engine, battery, wheel and chssis model were developed and validated by test data in a energy aspect as well as thermal characteristics. To develop a vehicle simulation model with high validity, supervisory vehicle control model also needs to be developed. The development of supervisory vehicle control model is based on the analysis of test data including driving mode change, engine on/off, battery energy management and engine operating conditions. After implementation of all developed components, supervisory control model and vehicle model into Autonomie, the validation with test data was conducted. As a results, the fuel economies shows within the 5% discrepancies in most cases in the test-to-test variability.
Jongryeol JEONG, Namdoo Kim, Kevin Stutenberg, Aymeric Rousseau