This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Diaphragm Fuel Injection System (DFI) for Stratified-Charging of Small Two-Stroke Gasoline Engine
Annotation ability available
Sector:
Language:
English
Abstract
Proper fuel supply system is the crux to realize the stratified scavenging for small type of two-stroke gasoline engine. A simple and effective diaphragm fuel injection system (DFI) is developed in the paper, which mainly consists of diaphragm pump and injector, the DFI utilizes the crankcase pressure which reflects the inlet flow rate to meter and inject fuel.
As low short-circuit at low load operation, stratified scavenging seems not necessary, so the conventional carburetor is preserved to function at low load. This makes the whole fuel system simple and effective.
The paper describes the operation principle of the DFI, and results of test on a 30cm3 modified engine are also presented, including the performance of fuel supply and contrast of complex engine performance with the original carbureted engine.
Recommended Content
Authors
Citation
Yang, X., Zeng, K., Li, G., Jiang, D. et al., "Diaphragm Fuel Injection System (DFI) for Stratified-Charging of Small Two-Stroke Gasoline Engine," SAE Technical Paper 960365, 1996, https://doi.org/10.4271/960365.Also In
References
- sato T. Nakayama M. “Gasoline Direct Injection for a Loop-Scavenged Two-stroke Cycle Engine” SAE Paper 871690 1987
- Schechter M. Jary E. Levin M. “High Speed Fuel Injection System for Two-Stroke D.I. Gasoline Engine” SAE Paper 910666 1991
- Schechter M. Levin M. “Air-Forced Fuel injection System for 2-Stroke D.I. Gasoline Engine” SAE Paper 910664 1991
- Stihl A 1989
- Orbital Engine Co. 1987
- Douglas R. Blair G. P. “Fuel Injection of a Two-Stroke Cycle Spark ignition Engine” SAE Paper 820952 1982
- Francisek B. Radislav P. “The Nozzle Location and the shape of its Surroundings in the Cylinder of Small Two-Stroke Engine” SAE Paper 860169 1986
- Duret P. Ecomard A. Audinet M. “A New Two-Stroke Engine with Compressed Air-Assisted Fuel Injection for High Efficiency Low Emissions Applications” SAE Paper 880176 1988
- Laimbock F. “The Potential of Small Loop-Scavenged Spark-Ignition Single Cylinder Two-Stroke Engines” SAE Paper 910695 1991
- Blundell D. Sandford M. “Two-Stroke Engines - The Lotus Approach” SAE Paper 920779 1992
- Blair G. Hill B. Miller A Nichell S. “Reduction of Fuel Consumption of a Spark-Ignition Two-Stroke Cycle Engine” SAE Paper 830093 1983
- Motorcycles I. C. Engine Res. Inst. 1993
- Magee S. Douglas R. Blair G. Cessard J. “Reduction of Fuel Consumption and Emissions for a Small Capacity Two-Stroke Cycle Engine” SAE Paper 932393 1993
- Rochelle P. “Delayed charging: A Means to Improve Two-Stroke Engine Characteristics” SAE Paper 941678 1994
- Xiaofeng Yang 1993
- Onishi S. Jo S.H. Shoda K. Jo P.D. Kato S. “Active Thermo-Atmosphere Combustion (ATAC)--A New Combustion Process for Internal Combustion Engine” SAE Paper 790501 1979
- Duret P. Moreau J. F. “Reduction of Pollutant Emissions of the IAPAC Two-Stroke Engine with Compressed Air Assisted Fuel Injection” SAE Paper 900801 1990
- Nuti M. Martorano L. “Short-Circuit Ratio Evaluation in the Scavenging of Two-Stroke S. I. Engines” SAE Paper 850177 1985
- Xiaofeng Yang 1995
- Onishi S. Jo S. H. So P.D. Sato S. “Multi-Layer Stratified Scavenging (MULS) -- A New Scavenging Method for Two-Stroke Engine” SAE Paper 840420 1984
- Xiaofeng Yang 1995
- Xiaofeng Yang 1995