The EcoCAR 2 team at the Ohio State University is designing a Parallel-Series Plug-in Hybrid Electric Vehicle (PHEV) that will be capable of 50 miles all-electric range using a 18.9 kWh battery pack, with range extension in parallel operation using a 1.8L dedicated E85 engine. The vehicle is designed to significantly reduce fuel consumption while still meeting the EPA’s Tier II Bin 5 emissions standards. This paper details the rapid vehicle architecture selection process the team completed to select the parallel-series PHEV architecture in less than two months. The team used Argonne National Lab’s Autonomie software to simulate four hybrid vehicle architectures considered by the team as well as the conventional vehicle. The simulation results were used to compare the performance and fuel economy of each of the hybrid vehicles, in order select the vehicle architecture that best met the goals of the Ohio State team.

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