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The New 4-Cylinder Turbocharged GDI Engine from SAIC Motor
Technical Paper
2020-01-0836
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
SAIC Motor Corporation Limited (SAIC Motor) has developed a new 1.5 L 4-cylinder turbocharged gasoline direct injection engine to meet the market demand and increasingly stringent requirement of CAFE and tail-pipe emission regulations. A series of advanced technologies for improving engine fuel economy, engine-out emission, torque and power output specially low end torque performance have been employed, such as: central gasoline direct injection, integrated exhaust manifold, high tumble combustion system, Miller Cycle, cooled external EGR, 35MPa fuel injection system, multi-hole injector with variable hole size design, efficient turbo charging with electric wastegate (EWG), etc. As a result, the engine is able to achieve over 39% brake thermal efficiency (BTE), as well as substantial fuel consumption reduction in vehicle driving cycle. It delivers 275 Nm maximum torque and 127kW rated power, with fast low end torque response. By integrating the 35MPa high pressure fuel injection system and optimized multi-hole fuel spray, the engine-out particulate numbers (PN) emission is reduced by more than 70% over a previous base engine with 20Mpa fuel injection system. The vehicle equipped with this new engine is capable of meeting China VI b standard emission regulatory requirement without gasoline particulate filter (GPF).
In this paper, the engine layout and design/optimization of the combustion system will be described. The detailed investigations with simulations and dyno testing of effects of the core technologies will also be presented: effect of high tumble port and masking design, effect of fuel spray pattern optimization, Miller cycle vs. Otto cycle, 35MPa vs. 20MPa fuel injection system, electric wastegate (EWG) vs. pneumatic wastegate control, cooled LP-EGR vs. HP-EGR.
Authors
- Zheng Xu - SAIC Motor Technical Center
- YinSheng Ping - SAIC Motor Technical Center
- Chuanhui Cheng - SAIC Motor Technical Center
- Xiaomao Zhang - SAIC Motor Technical Center
- Haiting Yin - SAIC Motor Technical Center
- WeiJun Li - SAIC Motor Technical Center
- DongBo Cai - SAIC Motor Technical Center
- ShaoMing Wang - SAIC Motor Technical Center
- YanJun Wang - SAIC Motor Technical Center
- Yang Yang - SAIC Motor Technical Center
- Yingzhen Wang - SAIC Motor Technical Center
- YaJun Zhang - SAIC Motor Technical Center
Topic
Citation
Xu, Z., Ping, Y., Cheng, C., Zhang, X. et al., "The New 4-Cylinder Turbocharged GDI Engine from SAIC Motor," SAE Technical Paper 2020-01-0836, 2020, https://doi.org/10.4271/2020-01-0836.Data Sets - Support Documents
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References
- Curtis , E. Kunde , O. , McCarthy , T. , et al. EcoBoost : Downsized gasoline DI turbo engines as the backbone of Ford's CO2 and fuel economy product strategy [C]//FISITA(Fédé-ration Internationale desd’Ing é nieurs des Techniques de L’Automobile) Budapest 2010
- Lang , O. , Geiger , J. , Habermann , K. et al. Boosting and Direct Injection - Synergies for Future Gasoline Engines SAE Technical Paper 2005-01-1144 2005 https://doi.org/10.4271/2005-01-1144
- Kleeberg , H. , Tomazic , D. , Lang , O. et al. Future Potential and Development Method for High Output Turbocharged Direct Injected Gasoline Engines SAE Technical Paper 2006-01-0046 2006 https://doi.org/10.4271/2006-01-0046
- Grebe , U. Rightsizing des verbrennungs Motors MTZ (Motortechnische Zeitschrift) S787 2008
- Schroeder , C. GM: Rightsing statt Downsizing ATZ (Automobiltechnische Zeitschrift)
- Weber , C. , Brumley , A. , Filipe , D. et al. 1.6 SCTI: The New EcoBoost DI-Turbo Engine with Central Direct Injection for Ford’s Volume Carlines 19th Aachen Colloquium Automobile and Engine Technology Aachen 2010
- Hitomi , M. , Sasaki , J. , Hatamura , K. et al. Mechanism of Improving Fuel Efficiency by Miller Cycle and Its Future Prospect SAE Technical Paper 950974 1995 https://doi.org/10.4271/950974
- Al-Hasan , N.S. , Beer , J. , Ehrhard , J. et al. Charging Technologies for CO2-Reduction by Millerization SAE Technical Paper 2015-01-1250 2015 https://doi.org/10.4271/2015-01-1250
- Heywood , J.B. Internal Combustion Engine Fundamentals New York McGraw-Hill 1988 184 186
- Li , Y. , Zhao , H. , Stansfield , P. , and Freeland , P. Synergy between Boost and Valve Timings in a Highly Boosted Direct Injection Gasoline Engine Operating with Miller Cycle SAE Technical Paper 2015-01-1262 2015 https://doi.org/10.42741/2015-01-1262
- Li , T. , Gao , Y. , Wang , J. et al. The Miller Cycle Effects on Improvement of Fuel Economy in a Highly Boosted, High Compression Ratio, Direct-Injection Gasoline Engine: EIVC vs LIVC Energy Conversion and Management 79 59 65 2014
- Hara , S. , Nakajima , Y. , and Nagumo , S. Effects of Intake-Valve Closing Timing on Spark-Ignition Engine Combustion SAE Technical Paper 850074 1985 https://doi.org/10.4271/850074
- Vent , G. , Enderle , C. , Merdes , N. et al. The New 2.0l Turbo Engine from the Mercedes-Benz 4-Cylinder Engine Family 2nd Aachen Colloquium China 2012 China 2012
- Akihama , K. , Takatori , Y. , Inagaki , K. , Sasaki , S. , and Dean , A. Mechanism of the Smokeless Rich Diesel Combustion by Reducing Temperature SAE Technical Paper 2001-01-0655 2001 https://doi.org/10.4271/2001-01-0655
- Steimle , F. , Kulzer , A. , Richter , H. et al. Systematic Analysis and Particle Emission Reduction of Homogeneous Direct Injection SI Engines SAE Technical Paper 2013-01-0248 2013 https://doi.org/10.4271/2013-01-0248
- Pauer , T. , Yilmaz , H. , Zumbrägel , J. et al. The New Generation Bosch Gasoline Direct-injection Systems MTZ Worldwide 78 7-8 16 23 2017
- Hoepke , B. , Jannsen , S. , Kasseris , E. , and Cheng , W. EGR Effects on Boosted SI Engine Operation and Knock Integral Correlation SAE Technical Paper 2012-01-0707 2012 https://doi.org/10.4271/2012-01-0707
- Ikeya , K. , Takazawa , M. , Yamada , T. , Park , S. , and Tagishi , R. Thermal Efficiency Enhancement of a Gasoline Engine SAE Technical Paper 2015-01-1263 2015 https://doi.org/10.4271/2015-01-1263
- Nakata , K. , Nogawa , S. , Daishi , T. , Yoshihara , Y. et al. Engine Technologies for Achieving 45% Thermal Efficiency of S.I. Engine SAE Technical Paper 2015-01-1896 2015 https://doi.org/10.4271/2015-01-1896