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Powertrain Design to Meet Performance and Energy Consumption Goals for EcoCAR 3
Technical Paper
2014-01-1915
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The Hybrid Electric Vehicle Team (HEVT) of Virginia Tech is excited about the opportunity to apply for participation in the next Advanced Vehicle Technology Competition. EcoCAR 3 is a new four year competition sponsored by the Department of Energy and General Motors with the intention of promoting sustainable energy in the automotive sector. The goal of the competition is to guide students from universities in North America to create new and innovative technologies to reduce the environmental impact of modern day transportation. EcoCAR 3, like its predecessors, will give students hands-on experience in designing and implementing advanced technologies in a setting similar to that of current production vehicles. The primary goals of the competition are to improve upon a conventional internal combustion engine production vehicle by designing and constructing a powertrain that accomplishes the following:
- Reduce Energy Consumption
- Reduce Well-to-Wheel (WTW) GHG Emissions
- Reduce Criteria Tailpipe Emissions
- Maintain Consumer Acceptability in the area of Performance, Utility, and Safety
- Meet Energy and Environmental Goals, while considering Cost and Innovation
This paper presents results from several modeling problems and conceptual vehicle designs. First, the power and energy at the wheels to meet acceleration and gradeability performance requirements are documented. Next, to compare several different fuel sources including E10, E85, and B20 fuels for a given base conventional vehicle, drive cycle fuel energy consumption is documented and used to find WTW GHG impact. The conventional vehicle modeling is validated by comparing to measured fuel consumption and acceleration performance data from a conventional vehicle. To compare a battery electric vehicle (BEV) to the conventional vehicle, drive cycle electric grid energy consumption and GHG results from sizing a motor and battery to meet performance and range requirements are found. Very significant vehicle light-weighting (300 kg) would be required to accommodate a battery system large enough to meet the range goal of 320 km (200 mi). From here, the advantages of powertrain electrification are examined by constructing a Series Hybrid Electric Vehicle model. The model is used to size engine/generator and battery components in the powertrain. Additionally, different hybrid vehicle energy management strategies are explored to evaluate overall charge balance operation. Waste heat conversion to meet electric accessory loads is evaluated as an innovative technology that can also reduce vehicle energy consumption.
Finally, a powertrain design is selected to meet the goals of the competition. After exploring many powertrain configurations and energy sources, this paper details three hybrid powertrains to find a combination capable of meeting the target energy consumption and WTW GHG emissions while also meeting all of the performance goals. The first of these powertrains is sized to model a typical belted alternator starter (BAS) system and shows small improvements over a conventional vehicle. The next design is a parallel through the road hybrid that is sized to meet most power needs with an electric motor and a smaller IC engine. This case comes closer to the design goals, but still falls short on total energy consumption. Lastly, the battery and motor size are increased to allow a charge depleting mode, adding stored grid electricity to the energy sources. This electric energy only mode is able to displace a large amount of the fuel energy consumption based on the SAE J1711 method for determining utility factor weighted energy consumption of a plug-in hybrid electric vehicle. The final design proposed by HEVT for this modeling report is a Parallel Plug-In Hybrid Electric Vehicle using E85 fuel and a 7 kWh battery to provide an all-electric charge depleting range of 34 km (21 mi).
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Ord, D., White, E., Manning, P., Khare, A. et al., "Powertrain Design to Meet Performance and Energy Consumption Goals for EcoCAR 3," SAE Technical Paper 2014-01-1915, 2014, https://doi.org/10.4271/2014-01-1915.Also In
References
- Alley , R. , Nelson , D. , White , E. , and Manning , P. VTool: A Method for Predicting and Understanding the Energy Flow and Losses in Advanced Vehicle Powertrains SAE Technical Paper 2013-01-0543 2013 10.4271/2013-01-0543
- Alley , R. , King , J. , White , E. , and Nelson , D. Hybrid Architecture Selection to Reduce Emissions and Petroleum Energy Consumption SAE Technical Paper 2012-01-1195 2012 10.4271/2012-01-1195
- Burke , Andrew F. 2007 Batteries and Ultracapacitors for Electric, Hybrid, and Fuel Cell Vehicles IEEE Proceedings - Special Issue on Electric, Hybrid & Fuel Cell Vehicles 95 4 April 2007 806 820
- Yu Chuang , and Chau K.T. 2009 Thermoelectric automotive waste heat energy recovery using maximum power point tracking Energy Conversion and Management 50 6 June 2009 1506 1512
- EcoCAR 2: Plugging In To The Future http://www.ecocar2.org/
- Ehsani , M. , Gao , Y. , and Emadi , A. 2010 Modern Electric, Hybrid Electric, and Fuel Cell Vehicles: Fundamentals, Theory, and Design Second Wiley
- EPA Test Car List Data 2013 http://www.epa.gov/otaq/tcldata.htm
- GREET (Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation) Model 2013 http://greet.es.anl.gov/
- Hsiao , Chang Y.Y. , and Chen W.C. , S.L. 2010 A mathematic model of thermoelectric module with applications on waste heat recovery from automobile engine Energy 35 3 March 2010 1447 1454
- Hwang , Yoha , Lee , John Min , and Kim , Seung-Jong 2003 New active muffler system utilizing destructive interference by difference of transmission paths Journal of Sound and Vibration 262 1 17 April 2003 175 186
- Ikoma , K. , Munekiyo , M. , Furuya , K. , Kobayashi , M. , Izumi , T. , and Shinohara , K. 1998 Thermoelectric module and generator for gasoline engine vehicles Proceedings XVII International Conference on Thermoelectrics 1998 464 467 24 28 May 1998
- King , J. and Nelson , D. Model-Based Design of a Plug-In Hybrid Electric Vehicle Control Strategy SAE Technical Paper 2013-01-1753 2013 10.4271/2013-01-1753
- Krüger , J. , Castor , F. , and Jebasinski , R. Active Exhaust Silencers - Current Perspectives and Challenges SAE Technical Paper 2007-01-2204 2007 10.4271/2007-01-2204
- Lai , Jih-Sheng (Jason) , and Nelson Douglas J. 2007 Energy Management Power Converters in Hybrid Electric and Fuel Cell Vehicles IEEE Proceedings - Special Issue on Electric, Hybrid & Fuel Cell Vehicles 95 4 April 2007 766 777
- Manning , P. , White , E. , Alley , R. , King , J. et al. Vehicle System Design Process for a Series-Parallel Plug-in Hybrid Electric Vehicle SAE Int. J. Alt. Power. 1 2 503 524 2012 10.4271/2012-01-1774
- Manning , P. , White , E. , Nelson , D. , and Khare , A. Development of a Plug-In Hybrid Electric Vehicle Control Strategy Employing Software-In-the-Loop Techniques SAE Technical Paper 2013-01-0160 2013 10.4271/2013-01-0160
- Nam , E. and Sorab , J. Friction Reduction Trends in Modern Engines SAE Technical Paper 2004-01-1456 2004 10.4271/2004-01-1456
- National Training and Education Resource (NTER) Model Based Design Curriculum https://nwtp.sri.com/
- Ord , David , White Eli , Manning Peter , Khare Abhijit , Shoults Lucas , Nelson Douglas 2014 Vehicle Powertrain Modeling and Design Problem proposal to EcoCAR 3
- Petitjean , D. , Bernardini , L. , Middlemass , C. , and Shahed , S. Advanced Gasoline Engine Turbocharging Technology for Fuel Economy Improvements SAE Technical Paper 2004-01-0988 2004 10.4271/2004-01-0988
- Pisu , P. , and Rizzoni , G. 2007 A Comparative Study of Supervisory Control Strategies for Hybrid Electric Vehicles IEEE Transactions on Control System Technology 15 3 May 2007
- Ricardo, Inc. 2013 PowerDriver Passes Key Milestones towards Fuel Saving through Waste Heat Recovery Ricardo.com 21 Aug. 2013
- Ricardo, Inc. 2011 Computer Simulation of Light-Duty Vehicle Technologies for Greenhouse Gas Emission Reduction in the 2020-2025 Timeframe EPA Report 420_R_11-020
- Rossi , Frederico 2002 Active Noise Control Technique To Improve Engine Efficiency Proceedings of Energy and Environment 2002 Italy
- 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 June 2010
- SAE International Surface Vehiicle Information Report Utility Factor Definitions for Plug-In Hybrid Electric Vehicles Using Travel Survey Data SAE Standard J2841 Sept. 2010
- Zhang , B , and Mi , C. 2011 Charge-Depleting Control Strategies and Fuel Optimization of Blended-Mode Plug-In Hybrid Electric Vehicles IEEE Transactions on Vehicular Technology 60 4 May 2011