This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Evolution of a Small Two-Stroke Engine with Direct Liquid Injection and Stratified Charge
Technical Paper
2006-32-0066
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Two-stroke S.I. engine survival is submitted to direct fuel injection and charge stratification. An exhaustive activity concerning a 50 cm3 two-stroke S.I. engine with liquid direct injection and charge stratification has given really satisfactory results as regards engine aptitude to operate unthrottled at every speed and load. However, unthrottled operation does not necessarily lead to the best overall result. By CFD investigation and experimental tests, this paper proves that some throttling reduces HC and NOx emissions as well as pumping loss and increases exhaust gas temperature at light loads, with evident advantage for catalytic converter efficiency.
Recommended Content
Authors
Topic
Citation
Musu, E., Frigo, S., De Angelis, F., Gentili, R. et al., "Evolution of a Small Two-Stroke Engine with Direct Liquid Injection and Stratified Charge," SAE Technical Paper 2006-32-0066, 2006, https://doi.org/10.4271/2006-32-0066.Also In
References
- Zanforlin S. Gentili R. Dell'Orto P. 2002 “Flow Dynamics of Charge Stratification in Small GDI Two-Stroke Engine” ASME Paper ICEF 2002-499, ASME Fall International Conference New Orleans, USA
- Gentili R. Zanforlin S. Frigo S. Cozzolino F. Dell'Orto P. Doveri C. 2002 “Optimisation of a Stratified Charge Strategy for a Direct Injected Two-Stroke Engine” Paper 20024278 (JSAE), 2002-32-1785 (SAE), Small Engine Tecnology Conference and Exhibition Kyoto, Japan
- Gentili R. Zanforlin S. Frigo S. Dell'Orto P. Doveri C. 2004 “Behaviour of a Small Two-Stroke Engine with Direct Liquid Injection and Stratified Charge” SAE Paper 2004-32-0061 , Small Engine Technology Conference and Exhibition Graz, Austria
- Gentili R. Zanforlin S. Dell'Orto P. 2004 “Low Emission Small Two-Stroke Engine” Pro. Sino-Italian Symposium on Recycling and Environment” Beijing (China)
- Zanforlin S. Gentili R. 2004 “Stable Fuel Confinement in Stratified Charge GDI Engines” ASME Paper ICEF 2004-919, ASME Fall International Conference Long Beach, CA, USA
- Gentili R. Musu E. Zanforlin S. 2005 “Stratified Charge Strategies in Direct Injection S.I. Engines” SAE Paper 2005-24-071 , ICE Int. Conf. Capri, Italy
- Dukowicz, J.K. Particle-Fluid Numerical Model for Liquid Spray of Computational Physics 35 229 253 1980
- O'Rourke P. J. Amsden A. A. The Tab Method for Numerical Calculation of Spray Droplet Breakup SAE Paper 872089 1987
- Mundo, C. Sommerfeld, M. Tropea, M.C. Experimental Studies of the Deposition and Splashing of Small Liquid Droplets Impinging on a Flat Surface Rouen, France 1994
- Dukovitcz, J.K. Quasi-Steady Droplet Change in the Presence of Convection Los Alamos Scientific Laboratory