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Expansion of external EGR effective region and influence of dilution on boosted operation of a downsized turbocharged GDI engine
Technical Paper
2019-01-2252
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Engine downsizing is an effective technology to lower automotive CO2 emissions. However, the high load low speed regions are plagued with knocking combustion that are usually overcome by retarding the ignition. This interferes with the efficiency gains due to very late combustion. This paper reports the use of Exhaust Gas Recirculation (EGR) on a Ford Ecoboost 1l downsized gasoline turbocharged direct injection (GTDI) engine to improve efficiency by optimising combustion phasing unlocked by the improved knock resistance with EGR dilution. Further ignition system upgrades are tested for impact towards further efficiency improvements. 75mJ (standard) and 120mJ (high energy) ignition systems were compared. The experimental results showed that the brake specific fuel consumption (BSFC) can be improved by 5.6% with EGR dilution at 25%. When considering combined effects of EGR and high energy ignition upon engine fuel economy, the BSFC gain improves to 7.9%.
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Shimura, R., Zhao, H., and Wang, X., "Expansion of external EGR effective region and influence of dilution on boosted operation of a downsized turbocharged GDI engine," SAE Technical Paper 2019-01-2252, 2019, https://doi.org/10.4271/2019-01-2252.Data Sets - Support Documents
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References
- C. Patil , S. Varade , and S. Wadkar A Review of Engine Downsizing and its Effects Int. J. Curr. Eng. Technol. 7 7 319 324 2017
- N. Fraser , H. Blaxill , G. Lumsden , and M. Bassett , Challenges for Increased Efficiency through Gasoline Engine Downsizing SAE Int. J. Engines 2 1 2009
- W. Bandel , G. K. Fraidl , P. E. Kapus , H. Sikinger , and C. N. Cowland , The Turbocharged GDI Engine: Boosted Synergies for High Fuel Economy Plus Ultra-low Emission SAE Tech. Pap. Ser. 1 , no. 2006-01-1266 2006
- B. Lecointe and G. Monnier , Downsizing a Gasoline Engine Using Turbocharging with Direct Injection SAE Tech. Pap. Ser. 1 2003 1–5 2003
- P. Zelenka , H. Aufinger , W. Reczek , and W. Cartellieri , Cooled EGR - A Key Technology for Future Efficient HD Diesels SAE Tech. Pap. 980190 1998 724 1998
- E. Galloni , G. Fontana , and R. Palmaccio , Effects of exhaust gas recycle in a downsized gasoline engine Appl. Energy 105 99 107 2013
- L. Teodosio , V. De Bellis , and F. Bozza , Fuel Economy Improvement and Knock Tendency Reduction of a Downsized Turbocharged Engine at Full Load Operations through a Low- Pressure EGR System SAE Int. J. Engines 8 4 2015
- A. Cairns , H. Blaxill , and G. Irlam , Exhaust Gas Recirculation for Improved Part and Full Load Fuel Economy in a Turbocharged Gasoline Engine SAE Tech. Pap 724 2006
- T. Alger , T. Chauvet , and Z. Dimitrova , Synergies between High EGR Operation and GDI Systems SAE Int. J. Engines 1 1 2008
- T. Alger , J. Gingrich , C. Roberts , and B. Mangold , Cooled exhaust-gas recirculation for fuel economy and emissions improvement in gasoline engines Int. J. Engine Res. 12 3 252 264 2011
- and L. L. Yuedong Chao , Haifeng Lu , Zongjie Hu , Jun Deng , Zhijun Wu , Comparison of Fuel Economy Improvement by High and Low Pressure EGR System on a Downsized Boosted Gasoline Engine SAE Tech. Pap ., no. 2017-1–682 2016
- L. Francqueville and J.-B. Michel , On the Effects of EGR on Spark-Ignited Gasoline Combustion at High Load SAE Int. J. Engines 7 4 2014
- D. Takaki , H. Tsuchida , T. Kobara , M. Akagi , T. Tsuyuki , and M. Nagamine , Study of an EGR System for Downsizing Turbocharged Gasoline Engine to Improve Fuel Economy SAE Tech. Pap. 2014-01-1199 2014
- K. Ogata , A High Energy Ignition System for EGR Combustion Engine SAE Tech. Pap. Ser 1 2017
- J. Dale , M. D. Checkel , and P. R. Smy , Application of high energy ignition systems to engines Prog. Energy Combust. Sci. 23 5–6 379 398 1997
- T. D. Fansler , D. L. Reuss , V. Sick , and R. N. Dahms , Invited Review: Combustion instability in spray-guided stratified-charge engines: A review Int. J. Engine Res. 16 3 260 305 2015
- W. Chen et al Impact of Ignition Energy Phasing and Spark Gap on Combustion in a Homogenous Direct Injection Gasoline SI Engine Near the EGR Limit SAE Tech. Pap. Ser. 1 2013
- C. D. Cathey , T. Tang , T. Shiraishi , T. Urushihara , A. Kuthi , and M. A. Gundersen , Nanosecond Plasma Ignition for Improved Performance of an Internal Combustion Engine IEEE Trans. Plasma Sci. 35 6 1664 1668 2007
- J. Sevik , T. Wallner , M. Pamminger , R. Scarcelli , D. Singleton , and J. Sanders , Extending Lean and Exhaust Gas Recirculation-Dilute Operating Limits of a Modern Gasoline Direct- Injection Engine Using a Low-Energy Transient Plasma Ignition System J. Eng. Gas Turbines Power 138 11 112807 2016
- W. P. Attard , H. Blaxill , E. K. Anderson , and P. Litke , Knock Limit Extension with a Gasoline Fueled Pre-Chamber Jet Igniter in a Modern Vehicle Powertrain SAE Int. J. Engines 5 3 2012