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 2, Engine Testing
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 02, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
As CO2 legislation tightens, the next generation of turbocharged gasoline engines must meet stricter emissions targets combined with increased fuel efficiency standards. Recent studies have shown that the following technologies offer significant improvements to the efficiency of turbocharged GDI engines: Miller Cycle via late intake valve closing (LIVC), low pressure loop cooled EGR (LPL EGR), port water injection (PWI), and cylinder deactivation (CDA). While these efficiency-improving technologies are individually well-understood, in this study we directly compare these technologies to each other on the same engine at a range of operating conditions and over a range of compression ratios (CR). The technologies tested are applied to a boosted and direct injected (DI) gasoline engine and evaluated both individually and combined. The results show for the test engine, given all of the technologies available, what the best combinations are for all tested speeds and loads, at each compression ratio studied.
CitationChoi, M., Kwak, Y., 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, 2019, https://doi.org/10.4271/2019-01-0242.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
- Roth, D., Zhang, R., Sauerstein, R., and Becker, M., " New Aspects of Application of Hybrid EGR Systems to Turbocharged GDI Engines," in 18th Aachen Colloquium, Germany, October 6-7, 2009
- 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, doi:10.4271/2010-01-0588.
- Akima, K., Seko, K., Taga, W., Torii, K., and Nakamura, S., “Development of New Low Fuel Consumption 1.8L i-VTEC Gasoline Engine with Delayed Intake Valve Closing,” SAE Technical Paper 2006-01-0192, 2006, doi:10.4271/2006-01-0192.
- Sens, M., Mertz, J., and Dingel, O., “Using EGR in Turbo Charged Gasoline Engines for Replacing Fuel Enrichment - Potentials, Challenges, Solutions,” in SIA Conference, 2007, Strasbourg, France.
- Potteau, S., Lutz, P., Leroux, S., Vogel J.B., Moroz, S., and Tomas, E., “Cooled EGR for a Turbo SI Engine to Reduce Knocking and Fuel Consumption,” in SIA Conference 2007, Strasbourg, France.
- Ganser, J., High Load EGR for Boosted Gasoline Engines (Neckarsulm: Motortechnische Konferenz, 2007).
- Alger, T., Chauvet, T., and Dimitrova, Z., “Synergies between High EGR Operation and GDI Systems,” SAE Technical Paper 2008-01-0134, 2008, doi:10.4271/2006-01-0192.
- Choi, M., Park, S.H., Lee K., Kwak, Y., and Woo, Y., “Effect of Water Injection on Fuel Consumption in a Gasoline Direct Injection (GDI) Engine,” in FISITA Congress, 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,” in SAE World Congress, 2018.
- Scheidt, M., Brands, C., Kratzsch, M., and Guenther, M., “Combined Miller/Atkinson Strategy for Future Downsizing Concepts,” MTZ 75, 2014.
- Pauer, T., Frohnmaier, M., and Walther, J., “Optimization of Gasoline Engines by Water Injection, 37,” Internationales Wiener Motorensymposium, 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, doi:10.4271/2001-01-3591.