This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Misfiring Effects on Scavenging Flow at Scavenging Port and Exhaust Pipe in a Small Two-Stroke-Engine
Annotation ability available
Sector:
Language:
English
Abstract
Misfiring cycles were detected by a conditional sampling method to demonstrate the differences between firing and misfiring of the scavenging flow characteristics at the scavenging port and exhaust pipe using LDV method. The results show that the flow at the scavenging port was not influenced significantly by misfiring, but the blowdown flow in the exhaust pipe greatly depended on the combustion status. The blow-down flow of fired cycles at a light-load condition was very similar to the flow at a full-load condition. It was also found that measured flow characteristics at partial load should not be considered by averaging firing and misfiring cycles. The occurrence pattern of misfiring should be quantified and considered in the analysis.
Recommended Content
Authors
Citation
Ikeda, Y., Ohira, T., Takahashi, T., and Nakajima, T., "Misfiring Effects on Scavenging Flow at Scavenging Port and Exhaust Pipe in a Small Two-Stroke-Engine," SAE Technical Paper 930498, 1993, https://doi.org/10.4271/930498.Also In
References
- Blair G. P. “The Basic Design of Two-Stroke Engines,” SAE 1990
- “Two-Stroke Engine Diagnostics and design,” SAE, SP-901 1992
- “Two-Stroke Small Engine and Emission Reduction,” SAE, SP-883 1992
- Sawa N. “On the Intermittent Combustion in a Small Two-Cycle Gasoline Engine,” (in Japanese) Bulletin of JSME 26 12 1960
- Ohigashi S. “Irregularity Combustion in Engine Cylinder,” (in Japanese) Trans. of JSAE 27 4 1973
- Kamimoto T. et al. (in Japanese) Bulletin of JSME 39 323 1973
- Patterson D. J. “Pressure Variations, A Fundamental Combustion Problem,” SAE Paper No. 660129 1966
- Tsuchiya K. Nagai Y. Gotoh T. “A Study of Irregular Combustion on 2-Stroke Cycle Gasoline Engines,” SAE Paper No. 830091 1983
- Aoyama T. Nakajima M. Onishi M. Nagahiko S. “Abnormal Combustion in Two-Stroke Motor Cycle Engines,” SAE Paper No. 770189 , SAE Trans 1977, 1977
- Abraham M. Prakash S. “A Theory of Cyclic Variations in Small Two-Stroke Cycle Spark-Ignited Engines-An Analytical Variation of Experimentally Observed Behavior,” SAE Paper 920426 1992
- Abraham M. Prakash S. “Cyclic Variations in a Small Two-Stroke Cycle Spark-Ignited Engine - An Experimental Study,” SAE Paper No. 920427 1992
- Daily J. W. “Cycle-to-Cycle Variations : A Chaotic Process ?,” Combust. Sci. and Tech. 57 149 162 1988
- Young M. B. “Cyclic Dispersion-Some Quantitative Cause and Effect Relationship,” SAE Paper No. 800459 1980
- Barton R. K. Kenamuth D. K. Lestz S. S. Meyer W. E. “Cycle-by-Cycle Variations of a Spark-Ignition Engine-A Statistical Analysis,” SAE Paper No. 700488 1970
- Winsor R. E. Patterson D. J. “Mixture Turbulence-A key to Cyclic Variation,” SAE Paper No. 730086 , SAE Trans. 1973, 1973
- Pundir B. P. “Studies on the influence of Charge Non-Homogeneity on Cycle-by-Cycle variation in Combustion and Nitrogen Oxide Emissions in S. I. Engines,” Ph D. Thesis University of Roorkee 1982
- Peters B. D. Borman G. S. “Cyclic Variations and Average Burning Rates in a S. I. Engine,” SAE Paper No. 700064 1970
- Sher E. “A Theoretical Study of the Influence of Inlet and Exhaust Conditions on the Scavenging Efficiency of a Two-Stroke Engine,” Israel Journal of Technology 18 169 1980
- Smyth J. G. Kenny R. G. Blair G. P. “Motored and Steady Flow Boundary Conditions Applied to the Prediction of Scavenging Flow in a Loop Scavenged Two-Stroke Cycle Engine,” SAE Paper No. 900800 1990
- Sweeney M. E. G. Swann G. B. G. Kenny R. G. Blair G. P. “Computational Fluid Dynamics Applied to Two-Stroke Engine Scavenging,” SAE Paper No. 851519 1985
- Uzkan T. “Analytically Predicted Improvements in the Scavenging and Trapping Efficiency of Two-Cycle Engine,” SAE Paper No. 880108 1988
- Sher E. “Scavenging the Two-Stroke Engine,” Prog. Energy Combust. Sci. 16 95 1990
- Smyth J. G. Kenny R. G. Blair G. P. “Steady Flow Analysis of the Scavenging Process in a Loop Scavenged Two-Stroke Cycle Engine - A Theoretical and Experimental Study,” SAE Paper No. 881267 1988
- Hacohen J. Belmont M. R. Thurley R. W. F. Thomas J. C. Morris E. L. Buckingham D. J. “Experimental and Theoretical Analysis of Flame Development and Misfire Phenomena in a Spark-Ignition Engine,” SAE Paper No. 920415 1992
- Hilbert H. S. Falco R. E. “Measurements of Flows During Scavenging in a Two-Stroke Engine,” SAE Paper No. 910671 1991
- Andrews M. J. Bracco F. V. “The Use of Intake and Exhaust Measurements with Computer Simulations to Investigate the Evolution of the Internal Flow Field in a Ported Engine,” SAE Paper No. 910262 1991
- Epstein P. H. Reitz R. D. Foster D. E. “Computations of a Two-Stroke Engine Cylinder and Port Scavenging Flows,” SAE Paper No. 910672 1991
- Sher E. Hossain I. Zhang Q. Winterbone D. E. “Calculations and Measurements in the Cylinder of a Two-Stroke Uniflow-Scavenged Engine Under Steady Flow Conditions,” Experimental Thermal and Fluid Science 1991 4 418 431 1991
- Sher E. “A Simple and Realistic Model for the Scavenging Process in a Crankcase-Scavenged Two-Stroke Cycle Engine,” IMechE 205 129 137 1991
- Belardini P. Bertoli C. Corcione F. E. Valentino G. “In-Cylinder Flow Measurements by LDA and Numerical Simulation by KIVA-2 Code,” SAE Paper No. 920155 1992
- Amsden A. A. O'Rourke P. J. Butler T. D. Meintjes Keith Fansler Todd D. “Comparisons of Computed and Measured Three-Dimensional Velocity Fields in a Motored Two-Stroke Engine,” SAE Paper No. 920418 1992
- Kou Tang-Wei R. D. Reitz “Three-Dimensional Computations of Combustion in Premixed-Charge and Direct-Injected Two-Stroke Engines,” SAE Paper No. 920425 1992
- Ikeda Y. Hikosaka M. Nakajima T. “Scavenging Flow Measurements in a Motored Two-Stroke Engine by Fiber LDV,” SAE Paper No. 910669 1991
- Ikeda Y. Hikosaka M. Ohira T. Nakajima T. “Scavenging Flow Measurements in a Fired Two-Stroke Engine by Fiber LDV,” SAE Paper No. 910670 1991
- Ikeda Y. Ohira T. Takahashi T. Nakajima T. “Flow Vector Measurements at the Scavenging Ports in a Fired Two-Stroke Engine,” SAE Paper No. 920420 1992
- Sher E. Hacohen Y. Refael S. Harari R. “Minimizing Short-Circuiting Losses in 2-S Engines by Throttling the Exhaust Pipe,” SAE Paper No. 901665 1991
- Anderson R. W. Lim M. T. “Investigation of Misfire in a Fast Burn Spark Ignition Engine,” Combust. Sci. and Tech. 43 183 196 1985
- Ohira T. Ikeda Y. Takahashi T. Ito T. Nakajima T. “Exhaust Gas Flow Behavior in a Two-Stroke Engine,” SAE Paper No.93???? 1993