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Impact of Conventional and Electrified Powertrains on Fuel Economy in Various Driving Cycles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
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Many technological developments in automobile powertrains have been implemented in order to increase efficiency and comply with emission regulations. Although most of these technologies show promising results in official fuel economy tests, their benefits in real driving conditions and real driving emissions can vary significantly, since driving profiles of many drivers are different than the official driving cycles. Therefore, it is important to assess these technologies under different driving conditions and this paper aims to offer an overall perspective, with a numerical study in simulations. The simulations are carried out on a compact passenger car model with eight powertrain configurations including: a naturally aspirated spark ignition engine, a start-stop system, a downsized engine with a turbocharger, a Miller cycle engine, cylinder deactivation, turbocharged downsized Miller engine, a parallel hybrid electric vehicle powertrain and an electric vehicle powertrain. These are tested in seven driving cycles including the NYCC, FTP75, NEDC, WLTC, US06, HWFET and CADC. The impacts of different technologies on fuel economy and CO2 emissions are analyzed, with respect to different operating conditions. Results reveal that a combination of certain driving cycles and vehicle configurations have a large influence on fuel consumption and CO2 emissions. In general, Miller and downsized engines offer some improvements in all cycles while the start-stop system has benefits in city cycles with frequent stops. The HEV and EV configurations offer a substantial improvement compared to conventional technologies in lower speed conditions like city cycles, but their benefits are reduced at cycles including higher speeds.
CitationMamikoglu, S., Andric, J., and Dahlander, P., "Impact of Conventional and Electrified Powertrains on Fuel Economy in Various Driving Cycles," SAE Technical Paper 2017-01-0903, 2017, https://doi.org/10.4271/2017-01-0903.
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- The International Council on Clean Transportation, “EU CO2 Emission Standards For Passenger Cars And Light-Commercial Vehicles”, ICCT Policy Update, Jan. 2014.
- Archer, G., “Manipulation of Fuel Economy Test Results by Carmakers: Further Evidence, Costs and Solutions”, Transport & Environment, Nov. 2014.
- Mock, P., Tietge, U., Franco, V., German, J., et al., “From Laboratory to Road A 2014 Update of Official and “Real-World” Fuel Consumption and CO2 Values for Passenger Cars in Europe”, ICCT White Paper, Sep. 2014.
- The International Council on Clean Transportation, “World-Harmonized Light-Duty Vehicles Test Procedure (WLTP)”, ICCT Policy Update, Nov. 2013.
- Environmental Protection Agency (EPA), National Highway Traffic Safety Administration (NHTSA), Department of Transportation (DOT), “Revisions and Additions to Motor Vehicle Fuel Economy Label”, Federal Register / Vol. 76, No. 129 Rules and Regulations, Jul. 2011.
- Christenson, M., Loiselle, A., Karman, D., and Graham, L., "The Effect of Driving Conditions and Ambient Temperature on Light Duty Gasoline-Electric Hybrid Vehicles (2): Fuel Consumption and Gaseous Pollutant Emission Rates," SAE Technical Paper 2007-01-2137, 2007, doi:10.4271/2007-01-2137.
- An, F., Barth, M., and Scora, G., "Impacts of Diverse Driving Cycles on Electric and Hybrid Electric Vehicle Performance," SAE Technical Paper 972646, 1997, doi:10.4271/972646.
- Johnson, T., "Review of Vehicular Emissions Trends," SAE Int. J. Engines 8(3):1152-1167, 2015, doi:10.4271/2015-01-0993.
- Heywood, J.B., “Internal Combustion Engine Fundamentals”, McGraw Hill, 1988.
- Pisu, P., Rizzoni, G., “A Comparative Study of Supervisory Control Strategies for Hybrid Electric Vehicles”, IEEE Transactions on Control Systems Technology, vol. 15, no. 3, May. 2007.
- ABB Inc, “Energy Efficiency in the Power Grid”, 2007.
- Sears, J., Roberts, D., Glitman, K., “A Comparison of Electric Vehicle Level 1 and Level 2 Charging Efficiency” IEEE Conference on Technologies for Sustainability, 2014.
- General Motors Corporation, “Well-to-Tank Energy Use and Greenhouse Gas Emissions of Transportation Fuels - North American Analysis” Vol.3, 2001.
- Brander, M., Sood, A., Wylie, C., Haughton, A., et al., “Electricity-specific emission factors for grid electricity”, Ecometrica Technical Paper, Aug. 2011.
- Andre, M., “The ARTEMIS European driving cycles for measuring car pollutant emissions”, Elsevier, Apr. 2004.
- Mock, P., Kühlwein, J., Tietge, U., Franco, V., “The WLTP: How a New Test Procedure for Cars Will Affect Fuel Consumption Values in The EU” ICCT Working Paper, Oct. 2014.
- Wishart, J., Shirk, M., “Quantifying the Effects of Idle-Stop Systems on Fuel Economy in Light- Duty Passenger Vehicles” INL, Dec. 2012.