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Fuel Economy Potential of Partially Premixed Compression Ignition (PPCI) Combustion with Naphtha Fuel
Technical Paper
2013-01-2701
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Recent research [21] has shown that the compression ignition concept where very low cetane fuels (RON between 70 and 85) are run in compression ignition (CI) mode has several advantages. The engine will be at least as efficient and clean as the current diesel engines but will have a less complicated after-treatment system. The optimum fuel will be less processed and therefore simpler to make compared to current gasoline or diesel fuels. Naphtha, which is a product of the initial distillation of petroleum, is one such fuel. It provides a path to mitigate the global demand imbalance between heavier and lighter fuels that is otherwise projected. Since naphtha requires much less processing in the refinery than either gasoline or diesel [23], there is an additional benefit in terms of well-to-wheel CO2 emissions and overall energy consumed.
Partially premixed charge compression ignition combustion with such a low cetane fuel has usually been investigated with a diesel engine base. In our recent publication [21], we have demonstrated that Naphtha, an intermediate refinery stream, can fuel a modern Diesel vehicle without compromising comfort, drivability, emissions or power requirements. It can also be considered as a way of increasing the efficiency of a Gasoline powertrain system. In our previous paper [15], we demonstrated a reduction in fuel consumption in a SI engine with a compression ratio (CR) of 12 when it was run in partially premixed combustion mode using naphtha. In this work, we developed more optimized combustion chamber design to improve idle and light load combustion stability. With a newly designed 14:1 CR piston and light naphtha, we achieved 26% average fuel consumption reduction over a range of part load operating points which represents federal test procedure (FTP) city cycle, compared to running the base SI engine on gasoline while engine out NOx & PM emissions were within Tier II Bin5 level. Load range windows for partially premixed combustion operation were identified without compromising emission and pressure rise rate thresholds. Lastly, stable naphtha combustion was also demonstrated at cold condition. Therefore, this work shows another way of developing a highly efficient fuel and engine system starting from a SI engine platform and optimized synergistically using naphtha fuel.
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Chang, J., Viollet, Y., Amer, A., and Kalghatgi, G., "Fuel Economy Potential of Partially Premixed Compression Ignition (PPCI) Combustion with Naphtha Fuel," SAE Technical Paper 2013-01-2701, 2013, https://doi.org/10.4271/2013-01-2701.Also In
References
- World Energy Outlook 2011 International Energy Agency (IEA) 2011 http://www.iea.org/publications/worldenergyoutlook/publi cations/weo-2011/ 9 April 2013
- International energy outlook 2011 DOE/EIA-0484 2011 U.S. Energy Information Administration http://www.eia.gov/forecasts/ieo/pdf/0484(2011).pdf 19 Dec 2012
- ExxonMobil 2012 Energy Outlook http://www.exxonmobil.co.uk/corporate/files/news_pub_eo2012.pdf 9 April 2013
- World Energy Council 2011 Global Transport Scenarios 2050 WEC London
- BP energy Outlook 2030 Jan 2012 http://www.bp.com/liveassets/bp_internet/globalbp/STA GING/global_assets/downloads/O/2012_2030_energy_o utlook_booklet.pdf 9 April 2013
- Statistical review of world energy 2012, BP 2012 http://www.bp.com/sectionbodycopy.do?categoryId=7500&contentId=7068481 9 April 2013
- Kalghatgi , G. Auto-Ignition Quality of Practical Fuels and Implications for Fuel Requirements of Future SI and HCCI Engines SAE Technical Paper 2005-01-0239 2005 10.4271/2005-01-0239
- Amer , A. , Babiker , H. , Chang , J. , Kalghatgi , G. et al. Fuel Effects on Knock in a Highly Boosted Direct Injection Spark Ignition Engine SAE Int. J. Fuels Lubr. 5 3 1048 1065 2012 10.4271/2012-01-1634
- Kalghatgi , G.T. and Bradley , D. Pre-ignition and super-knock in turbo-charged spark ignition (SI) engines International Journal of Engine Research 2012 13 399
- Kalghatgi , G. , Risberg , P. , and Ångström , H. Advantages of Fuels with High Resistance to Auto- ignition in Late-injection, Low-temperature, Compression Ignition Combustion SAE Technical Paper 2006-01-3385 2006 10.4271/2006-01-3385
- Hildingsson , L. , Johansson , B. , Kalghatgi , G. , and Harrison , A. Some Effects of Fuel Autoignition Quality and Volatility in Premixed Compression Ignition Engines SAE Int. J. Engines 3 1 440 460 2010 10.4271/2010-01-0607
- Kalghatgi , G.T. , Hildingsson , L. Johansson , B. and Harrison , A.J. 2010 Low- NOx, low-smoke operation of a diesel engine using “premixed enough” compression ignition - Effects of fuel autoignition quality, volatility and aromatic content THIESEL 2010, Thermo and fluid dynamic processes in diesel engines September 14 17 Valencia 2010 409 420
- Manente , V. , Johansson , B. and Canella , W. 2011 Gasoline partially premixed combustion, the future of internal combustion engines? International Journal of Engine Research 12 194 208
- Sellnau , M. , Sinnamon , J. , Hoyer , K. , and Husted , H. Full-Time Gasoline Direct-Injection Compression Ignition (GDCI) for High Efficiency and Low NOx and PM SAE Int. J. Engines 5 2 300 314 2012 10.4271/2012-01-0384
- Chang , J. , Kalghatgi , G. , Amer , A. , and Viollet , Y. Enabling High Efficiency Direct Injection Engine with Naphtha Fuel through Partially Premixed Charge Compression Ignition Combustion SAE Technical Paper 2012-01-0677 2012 10.4271/2012-01-0677
- Akihama , K. , Kosaka , H. , Hotta , Y. , Nishikawa , K. et al. An Investigation of High Load (Compression Ignition) Operation of the “Naphtha Engine” - a Combustion Strategy for Low Well-to-Wheel CO2 Emissions SAE Int. J. Fuels Lubr. 1 1 920 932 2008 10.4271/2008-01-1599
- Rose , K. , Cracknell , R. , Rickeard , D. , Ariztegui , J. et al. Impact of Fuel Properties on Advanced Combustion Performance in a Diesel Bench Engine and Demonstrator Vehicle SAE Technical Paper 2010-01-0334 2010 10.4271/2010-01-0334
- Won , H-W , Pitsch , H. , Tait , N. and Kalghatgi , G.T. 2012 Some effects of gasoline and diesel mixtures on partially premixed combustion and comparison with practical fuels, gasoline and diesel, in a diesel engine Proc. IMechE Part D: J. Automobile Engineering 226 9 1259 12708
- Hanson , R. , Splitter , D. , and Reitz , R. Operating a Heavy-Duty Direct-Injection Compression-Ignition Engine with Gasoline for Low Emissions SAE Technical Paper 2009-01-1442 2009 10.4271/2009-01-1442
- Kokjohn , S. , Hanson , R. , Splitter , D. , Kaddatz , J. et al. Fuel Reactivity Controlled Compression Ignition (RCCI) Combustion in Light- and Heavy-Duty Engines SAE Int. J. Engines 4 1 360 374 2011 10.4271/2011-01-0357
- 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
- Chang , J. , Güralp , O. , Filipi , Z. , Assanis , D. et al. New Heat Transfer Correlation for an HCCI Engine Derived from Measurements of Instantaneous Surface Heat Flux SAE Technical Paper 2004-01-2996 2004 10.4271/2004-01-2996
- Wang , M et al. 2004 Allocation of Energy Use in Petroleum Refineries to Petroleum Products Int. J LCA 9 1 2004