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Efficiency and Emissions Characteristics of Partially Premixed Dual-Fuel Combustion by Co-Direct Injection of NG and Diesel Fuel (DI 2 ) - Part 2
Technical Paper
2017-01-0766
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The CO2 advantage coupled with the low NOX and PM potential of natural gas (NG) makes it well-suited for meeting future greenhouse gas (GHG) and NOX regulations for on-road medium and heavy-duty engines. However, because NG is mostly methane, reduced combustion efficiency associated with traditional NG fueling strategies can result in significant levels of methane emissions which offset the CO2 advantage due to reduced efficiency and the high global warming potential of methane. To address this issue, the unique co-direct injection capability of the Westport HPDI fuel system was leveraged to obtain a partially-premixed fuel charge by injecting NG during the compression stroke followed by diesel injection for ignition timing control. This combustion strategy, referred to as DI2, was found to improve thermal and combustion efficiencies over fumigated dual-fuel combustion modes. In addition, DI2 provided significant thermal efficiency improvement over the baseline diffusion-controlled combustion strategy (HPDI) where NG injection occurs after diesel injection. The DI2 combustion process was analyzed using 3D-CFD and indicated that additional CH4 reductions from the crevice region may be possible by reducing the NG nozzle spray angle. To evaluate the potential reduction available, modified injection nozzles with narrow NG spray angles were tested on the engine. This paper reports the CFD and experimental results obtained with the modified injection nozzles which confirmed that significant CH4 emission reductions can be achieved while maintaining high BTE with DI2.
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Neely, G., Florea, R., Miwa, J., and Abidin, Z., "Efficiency and Emissions Characteristics of Partially Premixed Dual-Fuel Combustion by Co-Direct Injection of NG and Diesel Fuel (DI2) - Part 2," SAE Technical Paper 2017-01-0766, 2017, https://doi.org/10.4271/2017-01-0766.Data Sets - Support Documents
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References
- US Dept of Energy - Alternative Fuels Data Center http://www.afdc.energy.gov/data/ Oct 2016
- Shellim , R. Market Overview, Emissions Control in North America 2016 https://www.integer-research.com
- Westport Natural Gas Webinar 2014 http://www.westport.com/file_library/files/webinar/2014-07-10_NaturalGas201Webinar.pdf Dec 2015
- US EPA 40 CFR Parts 85, 86, 600 et al. Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles; Final Rule Federal Register 2011
- US EPA 40 CFR Parts 9, 22, 85 et al. NHTSA 49 CFR Parts 523, 534 et al. Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium and Heavy-Duty Engines and Vehicles -Phase 2; Final Rule Federal Register 2016
- ARB research project Evaluating Technologies and Methods to Lower Nitrogen Oxide Emissions from Heavy-Duty Vehicles https://www.arb.ca.gov/research/single-project.php?row_id=65182
- Kofod , M. and Stephenson , T. Well-to Wheel Greenhouse Gas Emissions of LNG Used as a Fuel for Long Haul Trucks in a European Scenario SAE Technical Paper 2013-24-0110 2013 10.4271/2013-24-0110
- IPCC 2007 Climate Change 2007: Synthesis Report. Contribution of Working Groups I, II and III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change Core Writing Team Pachauri , R.K and Reisinger , A. IPCC Geneva, Switzerland 104
- Xi , Y. , Ottinger , N. , and Liu , Z. Effect of Reductive Regeneration Conditions on Reactivity and Stability of a Pd-Based Oxidation Catalyst for Lean-Burn Natural Gas Applications SAE Technical Paper 2016-01-1005 2016 10.4271/2016-01-1005
- Williams , S. , Hu , L. , Nakazono , T. , Ohtsubo , H. et al. Oxidation Catalysts for Natural Gas Engine Operating under HCCI or SI Conditions SAE Int. J. Fuels Lubr. 1 1 326 337 2009 10.4271/2008-01-0807
- Papagiannakis , R.G. , Rakopoulos , C.D. , Hountalas , D.T. , Rakopoulos , D.C. Emission characteristics of high speed, dual fuel, compression ignition engine operating in a wide range of natural gas/diesel fuel proportions Fuel 89 1397 1406 2010
- Cozzolini , A. , Littera , D. , Ryskamp , R. , Smallwood , J. et al. Characteristics of Exhaust Emissions from a Heavy-Duty Diesel Engine Retrofitted to Operate in Methane/Diesel Dual-Fuel Mode SAE Technical Paper 2013-24-0181 2013 10.4271/2013-24-0181
- Besch , M. , Israel , J. , Thiruvengadam , A. , Kappanna , H. et al. Emissions Characterization from Different Technology Heavy-Duty Engines Retrofitted for CNG/Diesel Dual-Fuel Operation SAE Int. J. Engines 8 3 1342 1358 2015 10.4271/2015-01-1085
- Stalhammer , P. , Erlandsson , L. , Willner , K. , and Johannesson , S. Assessment of Dual-Fuel Technology Report SGC 233 June 2011
- Wagemakers , A. and Leermakers , C. Review on the Effects of Dual-Fuel Operation, Using Diesel and Gaseous Fuels, on Emissions and Performance SAE Technical Paper 2012-01-0869 2012 10.4271/2012-01-0869
- Wheeler , J. , Stein , J. , and Hunter , G. Effects of Charge Motion, Compression Ratio, and Dilution on a Medium Duty Natural Gas Single Cylinder Research Engine SAE Int. J. Engines 7 4 1650 1664 2014 10.4271/2014-01-2363
- Florea , R. , Neely , G. , Abidin , Z. , and Miwa , J. Efficiency and Emissions Characteristics of Partially Premixed Dual-Fuel Combustion by Co-Direct Injection of NG and Diesel Fuel (DI2) SAE Technical Paper 2016-01-0779 2016 10.4271/2016-01-0779
- Zhang , D. Direct injection natural gas engines Advanced Direct Injection Combustion Engine Technologies and Development: Gasoline and Gas Engines Zhao , H. Elsevier 2014 199 228 9781845697327
- Goudie , D. , Dunn , M. , Munshi , S. , Lyford-Pike , E. et al. Development of a Compression Ignition Heavy Duty Pilot-Ignited Natural Gas Fuelled Engine for Low NOx Emissions SAE Technical Paper 2004-01-2954 2004 10.4271/2004-01-2954
- McTaggart-Cowan , G. , Bushe , W. , Rogak , S. , Hill , P. et al. Injection Parameter Effects on a Direct Injected, Pilot Ignited, Heavy Duty Natural Gas Engine with EGR SAE Technical Paper 2003-01-3089 2003 10.4271/2003-01-3089
- Hodgins , K. , Hill , P. , Ouellette , P. , and Hung , P. Directly Injected Natural Gas Fueling of Diesel Engines SAE Technical Paper 961671 1996 10.4271/961671
- Ouellette , P. , Mtui , P. , and Hill , P. Numerical Simulations of Directly Injected Natural Gas and Pilot Diesel Fuel in a Two-Stroke Compression Ignition Engine SAE Technical Paper 981400 1998 10.4271/981400
- McTaggart-Cowan , G.P. et al. The Effects of High-Pressure Injection on a Compression Ignition, Direct Injection of Natural Gas Engine Journal of Engineering for Gas Turbines and Power April 2007 129 579
- McTaggart-Cowan , G.P. et al. Particulate Matter Reduction from a Pilot-Ignited, Direct Injection of Natural Gas Engine ASME Technical Paper ICEF2012-92162
- McTaggart-Cowan , G. , Mann , K. , Huang , J. , Singh , A. et al. Direct Injection of Natural Gas at up to 600 Bar in a Pilot-Ignited Heavy-Duty Engine SAE Int. J. Engines 8 3 981 996 2015 10.4271/2015-01-0865
- Zoldak , P. , Sobiesiak , A. , Wickman , D. , and Bergin , M. Combustion Simulation of Dual Fuel CNG Engine Using Direct Injection of Natural Gas and Diesel SAE Int. J. Engines 8 2 846 858 2015 10.4271/2015-01-0851
- Munshi , S. R. , McTaggart-Cowan , G. P. , Huang , J. , and Hill , P. G. Development of a Partially-Premixed Combustion Strategy for a Low-Emission, Direct Injection High Efficiency Natural Gas Engine Proceedings of the ASME 2011 Internal Combustion Engine Division Fall Technical Conference, ICEF2011 October 2-5, 2011 Morgantown, West Virginia, USA
- Convergent Science Converge 2.2: Theory Manual 2015