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Developing a 55% BTE Commercial Heavy-Duty Opposed-Piston Engine without a Waste Heat Recovery System
Technical Paper
2017-01-0638
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Heavy-duty vehicles, currently the second largest source of fuel consumption and carbon emissions are projected to be fastest growing mode in transportation sector in future. There is a clear need to increase fuel efficiency and lower emissions for these engines. The Opposed-Piston Engine (OP Engine) has the potential to address this growing need. In this paper, results are presented for a 9.8L three-cylinder two-stroke OP Engine that shows the potential of achieving 55% brake thermal efficiency (BTE), while simultaneously satisfying emission targets for tail pipe emissions. The two-stroke OP Engines are inherently more cost effective due to less engine parts. The OP Engine architecture presented in this paper can meet this performance without the use of waste heat recovery systems or turbo-compounding and hence is the most cost effective technology to deliver this level of fuel efficiency.
In this paper, engine performance results are presented for the 9.8L two-stroke OP Engine that employs currently available engine components, such as supercharger, turbocharger and after-treatment and features a uniquely designed piston bowl shape to enhance mixing with a swirl-to-tumble conversion as the piston bowls approach minimum volume. This design improves fuel-air mixing and hence, results in low soot values, increased indicated thermal efficiency (ITE) - due to better combustion phasing because of faster mixing controlled combustion, and lower NOx because of improved area-to-volume ratio and lower fueling requirement per cycle. Results are presented from the two-stroke OP Engine-specific 1-D and 3-D CFD models developed for correlation to the three-cylinder 4.9L two-stroke research engine dynamometer measured data. These correlated models were used as tools to make predictions for the 9.8L heavy-duty engine. The optimized system includes a high trapped compression ratio piston bowl, ports design to provide best scavenging performance, thermal barrier coating on piston bowls and dual injector with an optimized spray pattern layout. Engine performance results are presented at three speed-load points. Results show that the two-stroke OP Engine result in a BTE of 55%, while meeting stringent emission standards without the use of expensive waste heat recovery systems and/or turbo-compounding components.
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Citation
Abani, N., Nagar, N., Zermeno, R., chiang, M. et al., "Developing a 55% BTE Commercial Heavy-Duty Opposed-Piston Engine without a Waste Heat Recovery System," SAE Technical Paper 2017-01-0638, 2017, https://doi.org/10.4271/2017-01-0638.Data Sets - Support Documents
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References
- EPA and NHTSA Propose Greenhouse Gas and Fuel Efficiency Standards for Medium- and Heavy-Duty Trucks: By the Numbers https://www3.epa.gov/otaq/climate/documents/420f15903.pdf June 2015
- Delgado , O , and Lutsey , N. The U.S. SuperTruck Program: Expediting the development of Advanced heady-Duty Vehicle Efficiency Technologies International Council of Clean Transportation June 2014
- Koeberlein , D. Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks http://energy.gov/eere/vehicles/vehicle-technologies-office-annual-merit-review-presentations Department of Energy report, project ID: ACE057 2015
- Singh , S. Recovery Act - Class 8 Truck Freight Efficiency Improvement Project http://energy.gov/eere/vehicles/vehicle-technologies/office-annual-merit-review-presentations Department of Energy report, project ID: ACE058 June 2015
- Zukouski , R. SuperTruck - Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer Engine Systems http://energy.gov/eere/vehicles/vehicle-technologies/office-annual-merit-review-presentations Department of Energy report, project ID: ACE059 2016
- Amar , P. , Gibble , J. SuperTruck Powertrain Technologies for Efficiency Improvement http://energy.gov/eere/vehicles/vehicle-technologies-office-annual-merit-review-presentations Department of Energy report, project ID: ACE060 2016
- Hanson , R. , Kokjohn , S. , Splitter , D. , and Reitz , R. An Experimental Investigation of Fuel Reactivity Controlled PCCI Combustion in a Heavy-Duty Engine SAE Int. J. Engines 3 1 700 716 2010 10.4271/2010-01-0864
- Kokjohn , S.L. , Hanson , R.M. , Splitter , D.A. , and Reitz , R.D. Fuel Reactivity Controlled Compression Ignition (RCCI): A Pathway to Controlled High-Efficiency Clean Combustion International Journal of Engine Research, Special Issue on Fuel Efficiency 12 209 226 2011
- Hanson , R. , Ickes , A. , and Wallner , T. Comparison of RCCI Operation with and without EGR over the Full Operating Map of a Heavy-Duty Diesel Engine SAE Technical Paper 2016-01-0794 2016 10.4271/2016-01-0794
- Manente , V. , Zander , C. , Johansson , B. , Tunestal , P. et al. An Advanced Internal Combustion Engine Concept for Low Emissions and High Efficiency from Idle to Max Load Using Gasoline Partially Premixed Combustion SAE Technical Paper 2010-01-2198 2010 10.4271/2010-01-2198
- Chang , J. , Kalghatgi , G. , Amer , A. , Adomeit , P. et al. Vehicle Demonstration of Naphtha Fuel Achieving Both High Efficiency and Drivability with EURO6 Engine-Out NOx Emission SAE Int. J. Engines 6 1 101 119 2013 10.4271/2013-01-0267
- Sharma , A. and Redon , F. Multi-Cylinder Opposed-Piston Engine Results on Transient Test Cycle SAE Technical Paper 2016-01-1019 2016 10.4271/2016-01-1019
- Regner , G. , Herold , R. , Wahl , M. , Dion , E. et al. The Achates Power Opposed-Piston Two-Stroke Engine: Performance and Emissions Results in a Medium-Duty Application SAE Int. J. Engines 4 3 2726 2735 2011 10.4271/2011-01-2221
- Naik , S. , Redon , F. , Regner , G. , and Koszewnik , J. Opposed-Piston 2-Stroke Multi-Cylinder Engine Dynamometer Demonstration SAE Technical Paper 2015-26-0038 2015 10.4271/2015-26-0038
- Redon , F. , Kalebjian , C. , Kessler , J. , Rakovec , N. et al. Meeting Stringent 2025 Emissions and Fuel Efficiency Regulations with an Opposed-Piston, Light-Duty Diesel Engine SAE Technical Paper 2014-01-1187 2014 10.4271/2014-01-1187
- Venugopal , R. , Abani , N. , and MacKenzie , R. Effects of Injection Pattern Design on Piston Thermal Management in an Opposed-Piston Two-Stroke Engine SAE Technical Paper 2013-01-2423 2013 10.4271/2013-01-2423
- Herold , R. , Wahl , M. , Regner , G. , Lemke , J. et al. Thermodynamic Benefits of Opposed-Piston Two-Stroke Engines SAE Technical Paper 2011-01-2216 2011 10.4271/2011-01-2216
- Dion , E. P. , Lenski , B. M. ., and Mackenzie , R. G. Piston constructions for opposed-piston engines US 20120073526 2012
- Senecal , P. , Richards , K. , Pomraning , E. , Yang , T. et al. A New Parallel Cut-Cell Cartesian CFD Code for Rapid Grid Generation Applied to In-Cylinder Diesel Engine Simulations SAE Technical Paper 2007-01-0159 2007 10.4271/2007-01-0159
- Patel , A. , Kong , S. , and Reitz , R. Development and Validation of a Reduced Reaction Mechanism for HCCI Engine Simulations SAE Technical Paper 2004-01-0558 2004 10.4271/2004-01-0558
- Kong S.C. , Sun Y. , and Reitz R.D. Modeling diesel spray flame lift-off, sooting tendency and NOx emissions using detailed chemistry with phenomenological soot models ASME J. Eng. Gas Turbines Power 129 2007 245 251
- Smith G.P. , Golden D.M. , Frenklach M. , Moriarty N.W. , Eiteneer B. , Goldenberg M. , Bowman C.T. , Hanson R.K. , Song S. , Gardiner W.C. , Lissianski V.V. , and Qin Z. 2000 http://www.me.berkeley.edu/gri-mech/
- Hiroyasu , H. and Kadota , T. Models for Combustion and Formation of Nitric Oxide and Soot in Direct Injection Diesel Engines SAE Technical Paper 760129 1976 10.4271/760129
- Nagle , J. , and Strickland-Constable , R.F. Oxidation of Carbon Between 1000-2000 C Proceedings of the Fifth Carbon Conference 1 154 1962
- Patterson , M.A. Modeling the Effects of Fuel Injection Characteristics on Diesel Combustion and Emissions Ph.D. Thesis University of Wisconsin Madison 1997
- Abani , N. , and Reitz , R.D. Diesel engine emissions and combustion predictions using advanced mixing models applicable to fuel sprays Combustion Theory and Modelling 14 5 715 746 2010
- O’Rourke , P.J. Collective Drop Effects on Vaporizing Liquid Sprays Ph.D. Thesis Princeton University 1981
- Han , Z. , and Reitz , R.D. Turbulence Modeling of Internal Combustion Engines Using RNG k-ϵ Models Combustion Science and Technology 106 1995
- Klyza , C. Optical Measurement Methods used in Calibration and Validation of Modeled Injection Spray Characteristics Poster P7, presented in the 2010 Directions in Engine-Efficiency and Emissions Research (DEER) Conference
- Abani , N. , Kokjohn , S. , Park , S. , Bergin , M. et al. An Improved Spray Model for Reducing Numerical Parameter Dependencies in Diesel Engine CFD Simulations SAE Technical Paper 2008-01-0970 2008 10.4271/2008-01-0970
- Taraza , D. , Henein , N. , Ceausu , R. , and Bryzik , W. Engine Friction Model for Transient Operation of Turbocharged, Common Rail Diesel Engines SAE Technical Paper 2007-01-1460 2007 10.4271/2007-01-1460
- Stanley , R. , Taraza , D. , Henein , N. , and Bryzik , W. A Simplified Friction Model of the Piston Ring Assembly SAE Technical Paper 1999-01-0974 1999 10.4271/1999-01-0974
- Taraza , D. , Henein , N. , and Bryzik , W. Friction Losses in Multi-Cylinder Diesel Engines SAE Technical Paper 2000-01-0921 2000 10.4271/2000-01-0921
- Hersey , M. D. Theory and Research in Lubrication: Foundations for Future Developments 44 47 John Wiley & Sons 1966
- Gears - Thermal capacity, Part 2: Thermal load-carrying capacity ISO/TR 14179-2:2001(E) First 2001
- Praca , M. , Uehara , S. , Ferreira , M. , and Mian , O. New Polymeric Coating on Sputtered Bearings for Heavy Duty Diesel Engines SAE Int. J. Engines 6 1 623 628 2013 10.4271/2013-01-1724
- Hoppe , S. and Kantola , T. DuroGlide® - New Generation Piston Ring Coating for Fuel-Efficient Commercial Vehicle Engines SAE Technical Paper 2014-01-2323 2014 10.4271/2014-01-2323
- Reichert , J. , and Schäfer , P. Reduced Friction in Engine Sealing System for Truck Engines MTZ World 2010 71 30 10.1007/BF03227989
- SwRI NHSTA 812194 report 2014