This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Synergies of Cooled External EGR, Water Injection, Miller Valve Events and Cylinder Deactivation for the Improvement of Fuel Economy on a Turbocharged-GDI Engine; Part 1, Engine Simulation
Technical Paper
2019-01-0245
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
As CO2 legislation tightens, the next generation of turbocharged gasoline engines must meet stricter emissions targets combined with increased fuel efficiency standards. Promising technologies under consideration are: Miller Cycle via late intake valve closing (LIVC), low pressure loop cooled exhaust gas recirculation (LPL EGR), port water injection (PWI), and cylinder deactivation (CDA). While these efficiency improving options are well-understood individually, in this study we directly compare them to each other on the same engine at a range of operating conditions and over a range of compression ratios (CR). For this purpose we undertake a comprehensive simulation of the above technology options using a GT-Power model of the engine with a kinetics based knock combustion sub-model to optimize the fuel efficiency, taking into account the total in-cylinder dilution effects, due to internal and external EGR, on the combustion. Based on a carefully designed design of experiments (DOE) our results indicate a potential CO2 improvement of up to 7% at part load conditions compared to the base engine without the above mentioned technologies while limiting the loss of high load performance using the different technologies in combination.
Recommended Content
Authors
Topic
Citation
Choi, M., Kwak, Y., Song, J., Negandhi, V. et al., "Synergies of Cooled External EGR, Water Injection, Miller Valve Events and Cylinder Deactivation for the Improvement of Fuel Economy on a Turbocharged-GDI Engine; Part 1, Engine Simulation," SAE Technical Paper 2019-01-0245, 2019, https://doi.org/10.4271/2019-01-0245.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 |
Also In
References
- Cummins , C.L. Jr. Internal Fire SAE 1989 0898837650
- Watson , N. and Janota , M.S. Turbocharging the Internal Combustion Engine Macmillan 1982 0333242904
- Baines , N.C. Fundamentals of Turbocharging Concepts NREC 0-933283-14-8 2005
- Martinez-Botas , R. , Pesiridis , A. , Yang , M.Y. Overview of Boosting Options for Future Downsized Engines Science China 2011
- Reuters 2016
- Heywood , J.B. Internal Combustion Engine Fundamentals Second McGraw Hill 2018
- Miller , R.
- Roth , D. , Keller , P. , and Becker , M. Requirements of External EGR Systems for Dual Cam Phaser Turbo GDI Engines SAE Technical Paper 2010-01-0588 2010 10.4271/2010-01-0588
- Choi , M. , Park , S.H. , Lee K. , Kwak , Y. , et al. Effect of Water Injection on Fuel Consumption in a Gasoline Direct Injection (GDI) Engine 2016
- Teodosio , L. , De Bellis , V. , and Bozza , F. Combined Effects of Valve Strategies, Compression Ratio, Water Injection and Cooled EGR on the Fuel Consumption of a Small Turbocharged VVA Spark-Ignition Engine SAE Int. J. Engines 11 6 2018
- Scheidt , M. , Brands , C. , Kratzsch , M. , and Guenther , M. Combined Miller/Atkinson Strategy for Future Downsizing Concepts MTZ 75 2014
- Choi , M.S. , Kwak , Y.H. , Roth , D. , Jakiela , D. et al. Synergies of Cooled External EGR, Water Injection, Miller Valve Events and Cylinder Deactivation for the Improvement of Fuel Economy on a Turbocharged-GDI Engine; Part 2, Engine Testing SAE Technical Paper 2019-01-0242
- Schenk , M. , Schauer , F.X. , Sauer , C. , Weber , G. , et al. Challenges to the Ignition System of Future Gasoline Engines - An Application Oriented System Comparison 3rd iAV International Conference on Ignition Systems for Gasoline Engines 2016
- Leone , T. and Pozar , M. Fuel Economy Benefit of Cylinder Deactivation - Sensitivity to Vehicle Application and Operating Constraints SAE Technical Paper 2001-01-3591 2001 10.4271/2001-01-3591