This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Application of PHEV Fractional Utility Factor Weighting to EcoCAR On-Road Emissions and Energy Consumption Testing
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 05, 2016 by SAE International in United States
Annotation ability available
EcoCAR is North America's premier collegiate automotive engineering competition, challenging students with systems-level advanced powertrain design and integration. The EcoCAR Advanced Vehicle Technology Competition series is organized by Argonne National Laboratory, headline sponsored by the U.S. Department of Energy and General Motors, and sponsored by more than 30 industry and government leaders. In the last competition series, EcoCAR 2, fifteen university teams from across North America were challenged to reduce the environmental impact of a 2013 Chevrolet Malibu by redesigning the vehicle powertrain without compromising performance, safety, or consumer acceptability.
This paper examines the results of the EcoCAR 2 competition’s emissions and energy consumption (E&EC) on-road test results for several prototype plug-in hybrid electric vehicles (PHEVs). The official results for each vehicle are presented along with brief descriptions of the hybrid architectures.
In addition to the official competition results, this paper investigates two methods used to utility factor (UF) weight E&EC test data. This investigation was conducted to select a methodology for calculating
E&EC results in the EcoCAR 3 competition, where teams will reduce the environmental impact of a 2016 Chevrolet Camaro. The paper uses the EcoCAR 2 Year 3 data to quantify the impacts of using both a fractional UF-weighting method and applying a single vehicle UF on E&EC results for electric and fuel energy consumption. In the discussion it is shown that both UF-weighting methods produced similar results for fuel and electric energy consumption for a representative test vehicle. UF-weighting of criteria emissions is also investigated.
CitationCrain, T., Gorgia, T., and Alley, R., "Application of PHEV Fractional Utility Factor Weighting to EcoCAR On-Road Emissions and Energy Consumption Testing," SAE Technical Paper 2016-01-1180, 2016, https://doi.org/10.4271/2016-01-1180.
- SAE International Surface Vehicle Recommended Practice, "Recommended Practice for Measuring the Exhaust Emissions and Fuel Economy of Hybrid-Electric Vehicles, Including Plug-in Hybrid Vehicles," SAE Standard J1711, Rev. Jun. 2010.
- Crain, T. (2014). “Hybrid Vehicle Supervisory Controller Development Process to Minimize Emissions and Fuel Consumption in EcoCAR 2”. University of Washington, Mechanical Engineering.
- Bradley, T. and Davis, B., "Alternative Plug in Hybrid Electric Vehicle Utility Factor," SAE Technical Paper 2011-01-0864, 2011, doi:10.4271/2011-01-0864.
- Duoba, M., "Design of an On-Road PHEV Fuel Economy Testing Methodology with Built-In Utility Factor Distance Weighting," SAE Int. J. Alt. Power. 1(1):349-353, 2012, doi:10.4271/2012-01-1194.
- Duoba, M., Carlson, R., Wu, J., “TEST PROCEDURES AND BENCHMARKING Blended-Type and EV-Capable Plug-In Hybrid Electric Vehicles”, Argonne National Laboratory.
- Bovee, K., Hyde, A., Yatsko, M., Yard, M. et al., "Plant Modeling and Software Verification for a Plug-in Hybrid Electric Vehicle in the EcoCAR 2 Competition," SAE Technical Paper 2015-01-1229, 2015, doi:10.4271/2015-01-1229.
- ANL GREET model. https://greet.es.anl.gov/.