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The New BAIC High Efficiency Turbocharged Engine with LPL-EGR
Technical Paper
2017-01-2414
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The new Beijing Automotive Industry Corporation (BAIC) engine, an evolution of the 2.3L 4-cylinder turbocharged gasoline engine from Saab, was designed, built, and tested with close collaboration between BAIC Motor Powertrain Co., Ltd. and Southwest Research Institute (SwRI®). The upgraded engine was intended to achieve low fuel consumption and a good balance of high performance and compliance with Euro 6 emissions regulations. Low fuel consumption was achieved primarily through utilizing cooled low pressure loop exhaust gas recirculation (LPL-EGR) and dual independent cam phasers. Cooled LPL-EGR helped suppress engine knock and consequently allowed for increased compression ratio and improved thermal efficiency of the new engine. Dual independent cam phasers reduced engine pumping losses and helped increase low-speed torque. Additionally, the intake and exhaust systems were improved along with optimization of the combustion chamber design. A low-inertia, high-efficiency turbocharger was matched to recover waste heat and achieve the desired engine performance. A high speed combustion concept was introduced, including upgraded intake ports, a high energy ignition system, and fuel injection matching improvement. These changes allowed the achievement of greater combustion efficiency. Friction reduction technologies were applied to the piston, piston pin, ring pack and engine front end accessory drive (FEAD) system, and to the bearings of the engine balance shafts. A high-efficiency water pump was also applied to further improve mechanical efficiency. With the application of all the aforementioned technologies, the new BAIC engine achieved an overall fuel consumption reduction of 10 - 11%, and up to 15% improvement at high load conditions. A maximum brake thermal efficiency (BTE) of 37.4% was obtained, along with a peak torque level of 345Nm between 1900rpm to 4000rpm.
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Authors
- Dongsheng Zhang - BAIC Motor Powertrain Co., Ltd.
- Qilong Lu - Southwest Research Institute
- Michael Kocsis - Southwest Research Institute
- Ian Gilbert - Southwest Research Institute
- Marc Megel - Southwest Research Institute
- Xihao Liu - BAIC Motor Powertrain Co., Ltd.
- Jiaxin Gu - BAIC Motor Powertrain Co., Ltd.
- Qingyan Liu - BAIC Motor Powertrain Co., Ltd.
- Yanming He - BAIC Motor Powertrain Co., Ltd.
Topic
Citation
Zhang, D., Lu, Q., Kocsis, M., Gilbert, I. et al., "The New BAIC High Efficiency Turbocharged Engine with LPL-EGR," SAE Technical Paper 2017-01-2414, 2017, https://doi.org/10.4271/2017-01-2414.Data Sets - Support Documents
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References
- hakariya , M. , Toda , T. , and Sakai , M. The New Toyota Inline 4-Cylinder 2.5L Gasoline Engine SAE Technical Paper 2017-01-1021 2017 10.4271/2017-01-1021
- Shibata , M. , kawamata , M. , Komatsu , H. , Maeyama , K. et al. New 1.0L I3 Turbocharged Gasoline Direct Injection Engine SAE Technical Paper 2017-01-1029 2017 10.4271/2017-01-1029
- Yang , C. , Cheng , H. , fan , Z. , Yin , J. et al. Development of a 1-Liter Advanced Turbocharged Gasoline Direct Injection 3-Cylinder Engine SAE Technical Paper 2017-01-0632 2017 10.4271/2017-01-0632
- Nakata , K. , Nogawa , S. , Takahashi , D. , Yoshihara , Y. et al. Engine Technologies for Achieving 45% Thermal Efficiency of S.I. Engine SAE Int. J. Engines 9 1 179 192 2016 10.4271/2015-01-1896
- Takahashi , D. , Nakata , K. , Yoshihara , Y. , Ohta , Y. et al. Combustion Development to Achieve Engine Thermal Efficiency of 40% for Hybrid Vehicles SAE Technical Paper 2015-01-1254 2015 10.4271/2015-01-1254
- Ikeya , K. , Takazawa , M. , Yamada , T. , Park , S. et al. Thermal Efficiency Enhancement of a Gasoline Engine SAE Int. J. Engines 8 4 1579 1586 2015 10.4271/2015-01-1263
- Takaki , D. , Tsuchida , H. , Kobara , T. , Akagi , M. et al. Study of an EGR System for Downsizing Turbocharged Gasoline Engine to Improve Fuel Economy SAE Technical Paper 2014-01-1199 2014 10.4271/2014-01-1199
- Amann , M. , Alger , T. , and Mehta , D. The Effect of EGR on Low-Speed Pre-Ignition in Boosted SI Engines SAE Int. J. Engines 4 1 235 245 2011 10.4271/2011-01-0339
- Francqueville , L. and Michel , J. On the Effects of EGR on Spark-Ignited Gasoline Combustion at High Load SAE Int. J. Engines 7 4 1808 1823 2014 10.4271/2014-01-2628
- Alger , T. , Chauvet , T. , and Dimitrova , Z. Synergies between High EGR Operation and GDI Systems SAE Int. J. Engines 1 1 101 114 2009 10.4271/2008-01-0134
- Alger , T. , Gingrich , J. , Mangold , B. , and Roberts , C. A Continuous Discharge Ignition System for EGR Limit Extension in SI Engines SAE Int. J. Engines 4 1 677 692 2011 10.4271/2011-01-0661
- Alger , T. , Gingrich , J. , Roberts , C. , Mangold , B. et al. A High-Energy Continuous Discharge Ignition System for Dilute Engine Applications SAE Technical Paper 2013-01-1628 2013 10.4271/2013-01-1628
- Omura , T. , Nakata , K. , Yoshihara , Y. , and Takahashi , D. Research on the Measures for Improving Cycle-to-Cycle Variations under High Tumble Combustion SAE Technical Paper 2016-01-0694 2016 10.4271/2016-01-0694
- Dugdale , P. , Rademacher , R. , Price , B. , Subhedar , J. et al. Ecotec 2.4L VVT: A Variant of GM's Global 4-Cylinder Engine SAE Technical Paper 2005-01-1941 2005 10.4271/2005-01-1941
- Cleary , D. and Silvas , G. Unthrottled Engine Operation with Variable Intake Valve Lift, Duration, and Timing SAE Technical Paper 2007-01-1282 2007 10.4271/2007-01-1282
- Takahashi , D. , Nakata , K. , and Yoshihara , Y. Engine Thermal Control for Improving the Engine Thermal Efficiency and Anti-Knocking Quality SAE Technical Paper 2012-01-0377 2012 10.4271/2012-01-0377
- Matsuda , T. , Kobayashi , Y. , Kohri , I. , Nagano , H. et al. Development of Momentum Source Model of Vehicle Turbocharger Turbine SAE Technical Paper 2016-01-0210 2016 10.4271/2016-01-0210
- Furumata , S. , Kakinuma , T. , and Tochiki , H. Development of New 3.5 L V6 Turbocharged Gasoline Direct Injection Engine SAE Technical Paper 2016-01-1012 2016 10.4271/2016-01-1012
- Roberts , P. and Sheppard , C. The Influence of Residual Gas NO Content on Knock Onset of Iso-Octane, PRF, TRF and ULG Mixtures in SI Engines SAE Int. J. Engines 6 4 2028 2043 2013 10.4271/2013-01-9046
- Siokos , K. , Koli , R. , Prucka , R. , Schwanke , J. et al. Assessment of Cooled Low Pressure EGR in a Turbocharged Direct Injection Gasoline Engine SAE Int. J. Engines 8 4 1535 1543 2015 10.4271/2015-01-1253
- Hoepke , B. , Jannsen , S. , Kasseris , E. , and Cheng , W. EGR Effects on Boosted SI Engine Operation and Knock Integral Correlation SAE Int. J. Engines 5 2 547 559 2012 10.4271/2012-01-0707
- Gukelberger , R. , Alger , T. , Mangold , B. , Boehler , J. et al. Effects of EGR Dilution and Fuels on Spark Plug Temperatures in Gasoline Engines SAE Int. J. Engines 6 1 447 455 2013 10.4271/2013-01-1632
- Liu , F. and Pfeiffer , J. Estimation Algorithms for Low Pressure Cooled EGR in Spark-Ignition Engines SAE Int. J. Engines 8 4 1652 1659 2015 10.4271/2015-01-1620
- Liu , F. , Pfeiffer , J. , Caudle , R. , Marshall , P. et al. Low Pressure Cooled EGR Transient Estimation and Measurement for an Turbocharged SI Engine SAE Technical Paper 2016-01-0618 2016 10.4271/2016-01-0618