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ATAC and GDI in a Small Two-Stroke Engine
Technical Paper
1999-01-3273
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In two-stroke S.I. engines, direct fuel injection prevents fuel short-circuiting from the exhaust port, however it does not solve per se combustion problems at light loads due to excessive ratio of residual-to-fresh gas.
These problems can be solved by ATAC (Active Thermo Atmosphere Combustion), since residual-gas thermal energy is used to prime the combustion of fresh gas.
Experimental results of a small two-stroke S.I. engine with medium-pressure air-assisted fuel injection, operating on ATAC at light loads are shown and prove the possibility to combine the two solutions.
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Citation
Gentili, R. and Frigo, S., "ATAC and GDI in a Small Two-Stroke Engine," SAE Technical Paper 1999-01-3273, 1999, https://doi.org/10.4271/1999-01-3273.Also In
References
- Bosh GmbH “ Zweitakt-Benzineinspritzung bei Gutbrod und Goliath ” MTZ 1952 10
- Nuti M. Pardini R. Caponi D. “ FAST Injection System: PIAGGIO Solution for ULEV 2T SI Engines ” SAE Paper 970362 1997
- Onishi S. Jo S. Hong Shoda K. Jo P. Do Kato S. “ Active Thermo-Atmosphere Combustion (A.T.A.C.) - A New Combustion Process for Internal Combustion Engines ” SAE Paper 790501 1979
- Noguchi M. Tanaka Y. Tanaka T. Takeuchi Y. “ A Study on Gasoline Engine Combustion by Observation of Intermediate Reactive Products during Combustion ” SAE Paper 790840 1979
- Lida N. “ Combustion Analysis of Methanol-Fueled Active Thermo-Atmosphere Combustion (A.T.A.C.) Engine Using a Spectroscopic Observation ” SAE Paper 940684 1994
- Ishibashi Y. Tsushima Y. “ A Trial for Stabilizing Combustion in Two-Stroke Engines at Part Throttle Operation ” Pro. Int. Seminar “A New Generation of Two-Stroke Engines for the Future?” Rueil-Malmaison (France) 1993
- Gentili R. Frigo S. Tognotti L. Habert P. Lavy J. “ Experimental Study on ATAC (Active Thermo-Atmosphere Combustion) in a Two-Stroke Gasoline Engine ” SAE Transaction 970363 SP 1254 1997
- Corcione F. E. Rotondi R. Gentili R. Migliaccio M. “ Modeling the Mixture Formation in a Small Directed-Injected Two-Stroke Spark-Ignition Engine ” SAE Paper 970364
- Gentili R. Frigo S. Tognotti L. “ Development of a Pumpless Air Assisted Injection System for Two-Cycle, S.I. Engines ” SAE Transaction 940397 1994
- Monnier G. Duret P. Pardini R. Nuti M. “ IAPAC Two-Stroke Engine for High Efficiency Low Emissions Scooters ” Pro. Int. Conf. SETC 93 Pisa 1993
- Gentili R. Batoni G. Di Gangi I. “ Motore Sperimentale a Due Tempi ad Accensione Comandata ed Iniezione Pneumatica ” ATA 37 1 January 1984
- Leighton S. Ahern S. “ The Orbital Small Engine Fuel Injection System (SEFIS) for Direct Injected Two Stroke Cycle Engines ” 5 th Graz Two Wheeler Symposium Graz 1993
- Duret P. Venturi S. “ Automotive Calibration of the IAPAC Fluid Dynamically Controlled Two-Stroke Combustion Process ” SAE Paper 960363 1996
- Ishibashi Y. Asai M. “ A Low Pressure Pneumatic Direct Injection Two-Stroke Engine by Activated Radical Combustion Concept ” SAE Paper 980757 1998