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Effects of Mixture Preparation on HC Emissions of a S.I. Engine Operating Under Steady-State Cold Conditions
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English
Abstract
The effects on engine-out HC emissions of a premixed propane system, and three PFI systems employing different types of injectors and using Phase II gasoline were investigated on a four-cylinder DOHC spark-ignition engine. Cold conditions resulted in significant increases in engine-out HC emissions. Phase II gasoline caused much higher emissions of HC than propane fuel. The difference in the HC emissions from the two fuels increased dramatically with lowering the coolant temperature of the engine. At cold conditions, liquid fuel entering the combustion chamber appears to be the primary source of engine out HC emissions. At the coldest temperature tested the estimated percent contribution of in-cylinder liquid fuel to the observed increase of HC emissions was as much as 96%.
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Citation
Alkidas, A. and Drews, R., "Effects of Mixture Preparation on HC Emissions of a S.I. Engine Operating Under Steady-State Cold Conditions," SAE Technical Paper 961958, 1996, https://doi.org/10.4271/961958.Also In
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Number: SP-1268; Published: 1996-10-01
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Outcome of the European Programme on Emissions, Fuels and Engine Technologies (Epefe)
Number: SP-1204; Published: 1996-10-01
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References
- Alkidas, A. C. “The Effects of Fuel Preparation on HC Emissions of a S.I. Engine Operating Under Steady-State Conditions,” SAE Paper 941959 1994
- Wentworth, J. T. “Effect of Combustion Chamber Surface Temperature on Exhaust Hydrocarbon Concentration,” SAE Transactions 80 Paper 710587 2003 2019 1971
- Myers, J. P. Alkidas A. C. “Effects of Combustion-Chamber Surface Temperature on The Exhaust Emissions of a Single-Cylinder Spark-ignition Engine,” SAE Transactions 87 Paper- 780642 2483 2496 1978
- Pozniak, D. J. “The Exhaust Emission and Fuel Consumption Characteristics of an Engine During Warmup - A Vehicle Study,” SAE Paper 800396 1980
- Andrews G. E. Harris J. R. Ounzain A. “Experimental Methods for Investigating the Transient Heating and Emissions of an SI Engine During the Warm-Up Period,” Experimental Methods in Engine Research and Development IMechE 101 106 1988
- Rao, V. K. Bardon M. F. Gardiner D. P. “A Method of Assisting Cold-Starts, Improving Fuel Economy and Reducing Emissions of Engines at Cold Temperatures,” SAE Paper 890001 1989
- Quader, A. A. Sloane T. M. Sinkevitch R. M. Olson K. L. “Why Gasoline 90% Distillation Temperature Affects Emissions with PFI and Premixed Charge,” SAE Paper 912430 1991
- Yang, J. Kaiser E. W. Siegl W. O. Ahderson R. W. “Effects of Port-Injection Timing and Fuel Droplet Size on Total and Speciated Exhaust Hydrocarbon Emissions,” SAE Paper 930711 1993
- Guillemot, P. Gatellier B. Rouveirolles P. “The Influence of Coolant Temperature on Unburned Hydrocarbon Emissions from a Spark Ignition Engine,” SAE Paper 941962 1994
- Boam, D. J. Finlay I. C. Biddulph T. W. Ma T. Lee R. Richardson S. H. Bloomfield J. Green J. A. Wallace S. Woods W. A. Brown P. “The Sources of Unburnt Hydrocarbon Emissions from Spark Ignition Engines During Cold Starts and Warm-Up,” in Combustion in Engines - Technology, Applications and the Environment IMechE Paper C448/064 Mechanical Engineering Publications, Ltd. 57 72 1992
- Kaiser, E. W. LoRusso J. A. Lavoie G. A. Adamczyk A. A. “The Effect of Oil Layers On the Hydrocarbon Emissions from Spark-ignited Engines,” Combustion, Science and Technology 28 69 73 1982
- Ma, T. H. Woods W. A. Panesar A. Brown P. Dent J. C. Lambert N. “Tracing the Sources of Hydrocarbon Emissions in Engines - A Review of Several Research Programmes Made Over the Past Five Years,” Vehicles Emissions and Their Impact on European Air Quality IMechE Paper C326/87 229 235 1987
- Dyer, T. M. “Sources of Unburned-Hydrocarbon Emissions from Homogeneous-Charge Automotive Engines,” Sandia Report SAND83-8241 September 1983
- Kaplan, J. A. Heywood J. B. “Modeling the Spark Ignition Engine Warm-Up Process to Predict Component Temperatures and Hydrocarbon Emissions,” SAE Paper 910302 1991 Kaplan, J. A. Modeling the Spark Ignition Engine Warm-Up Process to Predict Component Temperatures MS Thesis MIT May 1990
- Min, K. Cheng W. A. Heywood J. B. “The Effects of Crevices on the Engine-Out Hydrocarbon Emissions in SI Engines,” SAE Paper 940306 1994
- Cheng, W. K. Hamrin D. Heywood J. B. Hochgreb S. Min K. Norris M. “An Overview of Hydrocarbon Emissions Mechanisms in Spark ignition Engines,” SAE Paper 932708 1993
- Reilly, R. J. Andersen R. P. Casparian R. J. Dugdale P. J. “Saturn DOHC and SOHC Four Cylinder Engines,” SAE Paper 910676 1991
- Kaiser, E. Siegl W. O. Trinker F. H. Cotton D. F. Cheng W. K. Drobot K. “Effect of Engine Operating Parameters on Hydrocarbon Oxidation in the Exhaust Port and Runner of a Spark Ignition Engine,” SAE Paper 950159 1995
- Gatellier, B. Trapy J. Herrier D. Quelin J. M. Galliot F. “Hydrocarbon Emissions of SI Engines as Influenced by Fuel Absorption- Desorption in Oil Films,” SAE Paper 920095 1995
- Schramm, J. Sorenson S. C. “Effects of Lubricating Oil on Hydrocarbon Emissions in an SI Engine,” SAE Paper 890622 1989
- Kanury, A. M. Introduction to Combustion Phenomena Gordon and Breach New York 142 269 1975
- Williams, F. A. Combustion Theory Second The Benjamin/Cummings Publishing Company, Inc. Menlo Park California 52 62 1985
- Pao, H. C. “The Measurement of Fuel Evaporation in the Induction System During Warm- Up,” SAE Paper 820409 1982
- Iwano, H. Jaitoh M. Sawamoto K. Nagaishi H. “An Analysis of Induction Port Fuel Behavior,” SAE Paper 912348 1991
- Brown, C. N. Ladommatos N. “A Numerical Study of Fuel Evaporation and Transportation in The Intake Manifold of a Port-injected Spark-Ignition Engine,” Proc Instn Mech Engrs-Part D: Journal of Automobile Engineering 205 161 175 1991
- Trinker, F. H. Anderson R. W. Henig Y. I. Siegl W. O. Kaiser E. W. “The Effect of Fuel-Oil Solubility on Exhaust HC Emissions,” SAE Paper 912349 1991
- Russ, S. G. Kaiser E. W. Siegl W. O. Podsiadlik D. H. Barrett K. M. “Compression Ratio and Coolant Temperature Effects on HC Emissions from a Spark -Ignition Engine SAE Paper 950163 1995
- Kaiser, E. W. Siegl W. O. Russ S. G. “Fuel Composition Effects on Hydrocarbon Emissions from a Spark-Ignited Engine - Is Fuel Absorption in Oil Significant?,” SAE Paper 952542 1995
- Ishizawa, S. Takagi Y. “A Study of HC Emission from a Spark Ignition Engine (The Influence of Fuel Absorbed into Cylinder Lubricating Oil Film),” JSME International Journal 30 260 310 317 1987
- Kaiser, E. W. Siegl W. O. Henig Y. I. Anderson R. W. Trinker F. H. “Effect of Fuel Structure on Emissions from Spark-ignited Engine,” Environ. Sci. Technol. 25 12 2005 2012 1991
- Kaiser, E. W. Siegl W. O. Anderson R. W. “Fuel Structure and the Nature of Engine-Out Emissons,” SAE Paper 941960 1994
- Cheng, W. K. Hochgreb S. Norris M. Wu K. C. “Auto-Oil Program Phase II Heavy Hydrocarbon Study: Fuel Species Oxidation Chemistry and Its Relationship to the Auto-Oil Data,” SAE Paper 941970 1994
- Nogi, T. Ohyama Y. Yamauchi T. Kuroiwa H. “Mixture Formation of Fuel Injection Systems in Gasoline Engines,” SAE Paper 880558 1988
- Bandel, W. Fraidl G. K. Mikulic L. A. Carstensen H. Quissek F. “Investigation of Mixture Preparation and Charge Motion Effects on The Combustion of Fast-Burn Gasoline Engines,” SAE Paper 890160 1989
- Nogi, T. Ohyama Y. Yamauchi T. SAE Paper 891961 1989