This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
An Analytical and Experimental Study of a High Pressure Single Piston Pump for Gasoline Direct Injection (GDi) Engine Applications
Technical Paper
2009-01-1504
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
In recent years, gasoline direct injection (GDi) engines have been popular due to their inherent potential for reduction of exhaust emissions and fuel consumption to meet stringent EPA standards. These engines require high-pressure fuel injection in order to improve the atomization process and accelerate mixture preparation. The high-pressure fuel pump is an essential component in the GDi system. Therefore, understanding the flow characteristics of this device and its associated behavior is critical for improving the performance of this category of engines.
In this paper, the fluid flow characteristics in a high-pressure single-piston pump for use in GDi engines are analyzed using 1-D LMS Imagine.Lab AMESim system and 3-D Ansys Fluent computational fluid dynamics (CFD) models. The flow rate of the fuel pump under various cam speeds has been examined along with characteristics of the pump's control valve. A comparison of model predictions with experimentally obtained data shows reasonably good agreement.
Similar analytical techniques may be used in modeling other pump details and may also be extended to adjacent components for simulation of the entire fuel system. Further improvements to the pump model are planned to correlate results more closely with test data with the eventual goal of facilitating pump design activity leading to improvements in pump and overall fuel system performance.
Recommended Content
Authors
Topic
Citation
Spegar, T., Chang, S., Das, S., Norkin, E. et al., "An Analytical and Experimental Study of a High Pressure Single Piston Pump for Gasoline Direct Injection (GDi) Engine Applications," SAE Technical Paper 2009-01-1504, 2009, https://doi.org/10.4271/2009-01-1504.Also In
SI Combustion and Direct Injection SI Engine Technology, 2009
Number: SP-2241; Published: 2009-04-20
Number: SP-2241; Published: 2009-04-20
References
- Achleitner E. Bäcker H. Funaioli A. “Direct Injection Systems for Otto Engines,” 2007-01-1416 SAE International Warrendale, PA 2007
- Eichlseder H. Baumann E. Müller P. Rubbert S. “Gasoline Direct Injection – A Promising Engine Concept for Future Demands,” 2000-01-0248 SAE International Warrendale, PA 2000
- Bandel W. Fraidl G.K. Kapus P.E. Sikinger H. Cowland C.N. “The Turbocharged GDI Engine: Boosted Synergies for High Fuel Economy Plus Ultra-low Emission,” 2006-01-1266 SAE International Warrendale, PA 2006
- Woldring D. Landenfeld T. Christie M.J. “DI Boost: Application of a High Performance Gasoline Direct Injection Concept,” 2007-01-1410 SAE International Warrendale, PA 2007
- Korte V. Blaxill H. Hancock D. Fraser N. “Advanced Downsizing of SI Engines: Promising Technology for Better Fuel Economy and Lower CO 2 Emissions,” SIA “The Spark Ignition Engine of the Future: Technologies to Meet the CO 2 Challenge” Conference Strasbourg, France November 28-29, 2007
- Kapus P.E. Fuerhapter A. Fuchs H. Fraidl G.K. “Ethanol Direct Injection on Turbocharged SI Engines – Potential and Challenges,” 2007-01-1408 SAE International Warrendale, PA 2007
- Fraidl G.K. Kapus P.E. Prevedel K. Fürhapter A. “GDI Turbo: The Next Steps,” 28th International Vienna Motor Symposium Vienna, Austria April 26-27, 2007
- Cathcart G. Houston R. Ahern S. “The Potential of Gasoline Direct Injection for Small Displacement 4-Stroke Motorcycle Applications,” 2004-32-0098 SAE International Warrendale, PA 2004
- Hiraku K. Tokuo K. Yamada H. “Development of High Pressure Fuel Pump by Using Hydraulic Simulator,” 2005-01-0099 SAE International Warrendale, PA 2005
- communication with potential customer April 2008
- Ansoft Maxwell Field Simulator v12 User's Guide REV1.0 Ansoft Corporation Pittsburgh, PA 2008
- Oberg E. et al. Machinery's Handbook 27th Industrial Press, Inc. 2004