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NSDI-3: A Small Bore GDI Engine
Technical Paper
1999-01-0172
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Gasoline Direct Injection (GDI) is today more regarded as a suitable technology for relatively high displacement engines. The literature shows that the R&D effort on GDI engines is generally made for bores larger than 80 mm. But because GDI appears to be the most relevant way to improve fuel efficiency of S.I. engines, it should also be considered for small bore engines (bore below 75 mm). Nevertheless, locating an injector in already congested cylinder heads, with ultra lean stratified combustion capability while maintaining high engine specific power and proper cylinder head cooling is a real challenge. For such an engine, IFP “narrow spacing” proposal is a 3-valve per cylinder layout or NSDI-3 concept, with a spark-plug-close-to-the-injector design and a suitable piston to confine the fuel spray within the vicinity of the ignition location. This paper describes stage by stage the prototype engine realization using this novel concept. In the early stage, computer aided design and three-dimensional computational fluid dynamics tools were used in a step-by-step iteration cycle to characterize and validate the concept at low cost. One-dimensional calculations were carried out to design the entire intake system and valve timing as well as three-dimensional calculations were conducted to optimize the cylinder head water cooling. In-cylinder flow, injection timing and combustion characteristics were examined with the help of three-dimensional calculations for the stratified charge operation in order to evaluate the criteria required to optimize this crucial process. Special emphasis was given to the mixture formation, to spray and in-cylinder flow interaction as well as to combustion and pollutant formation process. Finally, corresponding engine tests confirmed the potential of the concept for stratified combustion.
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Authors
- S. Henriot - Institut Français du Pétrole
- A. Chaouche - Institut Français du Pétrole
- E. Chevé - Institut Français du Pétrole
- J. M. Duclos - Institut Français du Pétrole
- P. Leduc - Institut Français du Pétrole
- P. Ménégazzi - Institut Français du Pétrole
- G. Monnier - Institut Français du Pétrole
- A. Ranini - Institut Français du Pétrole
Topic
Citation
Henriot, S., Chaouche, A., Chevé, E., Duclos, J. et al., "NSDI-3: A Small Bore GDI Engine," SAE Technical Paper 1999-01-0172, 1999, https://doi.org/10.4271/1999-01-0172.Also In
References
- Ingénieurs de l'Automobile October 1997
- Croissant, K. Kendlbacher, C. “Requirements for the engine management system of gasoline direct injection engines “Direkteinspritzung im Ottomotor” Congress Essen, Germany 1997
- Harada, J. Tomita, T. Mizumo, H. Mashiki, Z. Ito, Y. “Development of direct injection gasoline engine” SAE 970540 1997
- Kume, T. Iwamoto, Y. Murakami, M. Akishino, K. Ando, H. “Combustion control technologies for direct injection SI engine” SAE 960600 1996
- Karl, G. Kemmler, R. Bargende, M. Abstoff, J. “Analysis of a direct injected gasoline engine” SAE 970624 1997
- Tomoda, T. Sasaki, S. Sawada, D. Saito, A. Sami, H. “Development of direct injection gasoline engine - study of stratified mixture formation” SAE paper no 970539 1997
- Automotive engineering December 1997
- Ando, H. Noma, K. Lida, K. Nakayama, O. Yamauchi, T. “Mitsubishi GDI engine strategies to meet the European requirements” Engine and Environment Conference 97 Graz, Austria 1997
- Amsden, A. O'Rourke, P.J. Butler T.D. “KIVA-2 a computer program for chemically reactive flows withh sprays” Report LA-11560-MS Los Alamos National Laboratory 1989
- Habchi, C. Torres, A. “A 3D multi-block structured version of the KIVA-2 code” First European CFD Conference proceedings 1992
- Porot, P. Ménégazzi, P. Ap, N.S. “Understanding and improving evaporative engine at high load, high speed by engine tests and 3D calculations” 3rd Int. Conf. on Vehicle Thermal Management System (VTMS), SAE paper no 971792 Indianapolis, USA 1997
- Habchi, C. Verhoeven, D. Huynh Huu C. Lambert, L. “modeling atomization and break-up in high-pressure diesel sprays” SAE paper no 970881 1997
- Duclos, J.M. Zolver, M. “3D modeling of intake, injection and combustion in DI-SI engine under homogeneous ans sratified operating conditions” 4th Int. Symposium on Diagnostics and modeling of Combustion in Internal Combustion Engines, COMODIA 98 Kyoto, Japan 1998
- Han, Z. Parrish, S. Farrel, P.V. Reitz, R.D. “Modeling atomization processes of pressure swirl hollow cone fuel sprays” Atomization and sprays 7 663 684 1997
- Naber, J.D. Reitz, R.D. “modeling engine spray/wall impingement” SAE paper no 880107 1988
- Eckhause, J.E. Reitz, R.D. “modeling heat transfer to impingement fuel sprays in dirct-injection engines” Atomization and Sprays 5 213 242 1995