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Tracer Fuel Injection Studies on Exhaust Port Hydrocarbon Oxidation: Part II
Technical Paper
2000-01-1945
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Recently, studies were conducted on a single cylinder, four stroke engine to investigate the effect of temperature and local mixedness on exhaust port hydrocarbon oxidation. To examine the effect of temperature, hydrocarbon tracers (propane, propene, 1-butene, n-butane, and n-pentane) were individually injected into the exhaust port just behind the exhaust valve for operating conditions that provided different exhaust port temperatures. For the local mixedness experiments, tracer mixtures (propane + n-butane, 1-butene + n-butane, propene + n-butane) were injected into the exhaust port just behind either a normal exhaust valve or a shrouded exhaust valve. The concentration of tracers and their reaction products were measured using gas chromatography of samples withdrawn from the exhaust stream. The tracer consumption behavior with changing port temperature confirmed that there is a minimum port temperature for hydrocarbon oxidation. This “cutoff temperature” range is from 1300 - 1500 K depending on the hydrocarbon species, as suggested by previous experimental and modeling studies. The comparison between the tracer concentrations using normal and shrouded exhaust valves shows that increased local mixing significantly increased tracer consumption even for the times and temperatures available in the exhaust port.
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Citation
Yang, W., Zheng, J., Miller, D., and Cernansky, N., "Tracer Fuel Injection Studies on Exhaust Port Hydrocarbon Oxidation: Part II," SAE Technical Paper 2000-01-1945, 2000, https://doi.org/10.4271/2000-01-1945.Also In
References
- Drobot, K. Cheng, W.K. Trinker, F.H. Kaiser, E.W. Siegl, W.O. Cotton, D.F. Underwood, J. 1994 “Hydrocarbon Oxidation in the Exhaust Port and Runner of a Spark Ignition Engine” Combustion and Flame 99 2 422 430
- Cheng, W.K. Hamrin, D. Heywood, J.B. Hochgreb, S. Min, K. Norris, M. 1993 “An Overview of Hydrocarbon Emissions Mechanisms in Spark-Ignition Engines” SAE Paper No. 932708
- Caton, J.A. Heywood, J.B. 1980 “Models for Heat Transfer, Mixing and Hydrocarbon Oxidation in a Exhaust Port of a Spark-Ignited Engine” SAE Paper No. 800290
- Mendillo, J.V. Heywood, J.B. 1981 “Hydrocarbon Oxidation in the Exhaust Port of a Spark Ignition Engine” SAE Paper No. 810019
- Kaiser, E.W. Siegl, W.O. Trinker, F.H. Cotton, D.F. Cheng, W.K. Drobot, K. 1995 “Effect of Engine Operating Parameters on Hydrocarbon Oxidation in the Exhaust Port and Runner of a Spark-Ignitied Engine” SAE Paper No. 950159
- Prabhu, S.K. Bian, X. Miller, D.L. Cernansky, N.P. 1998 “Post Combustion Hydrocarbon Oxidation and Exhaust Emissions - Neat Fuel and Fuel Blend Studies” SAE Paper No. 981456 SAE Trans. 98
- Prabhu, S.K. Bian, X. Miller, D.L. Cernansky, N.P. 1998 “Time Resolved Exhaust Port Sampling Studies Related to Hydrocarbon Emissions from SI Engines” SAE Paper No. 982558 SAE Trans. 98
- Prabhu, S.K. 1997 “Pre and Post Combustion Hydrocarbon Oxidation Studies Related to Engine Knock and Emissions” Drexel University Philadelphia, PA
- Bian, X. Prabhu, S.K. Yang, W. Miller, D.L. Cernansky, N.P. 1998 “Tracer Fuel Injection Studies on Exhaust Port Hydrocarbon Oxidation” SAE Paper No. 982559 SAE Trans. 98
- Bian, X. 1998 “Post Combustion Hydrocarbon Oxidation and Exhaust Emissions - Exhaust Port Tracer Studies” Drexel University Philadelphia, PA
- Eng, J.A. Leppard, W.R. Najt, P.M. Dryer, F.L. 1997 “Experimental Hydrocarbon Consumption Rate Correlations from a Spark Ignition Engine” SAE Paper No. 972888
- Wu, K. Hochgreb, S. 1997 “Numerical Simulation of Post-Flame Oxidation of Hydrocarbons in Spark Ignition Engines” SAE Paper No. 970886
- Henig, Y. Addagarla, S. Miller, D.L. Wilk, R.D. Cernansky, N.P. 1989 “Autoignition of n-Butane/Isobutane Blends in a Knock Research Engine” SAE Paper No. 890157 SAE Trans. 98
- Ferguson, C.G. Green, R. M. Lucht, R.P. 1987 “Unburned Gas Temperature in an Internal Combustion Engine. II: Heat Release Computations” Comb. Sci. and Technol. 55 63 81
- Koert, D. N. Miller, D.L. Cernansky, N.P. 1992 “Results of Reactivity Mapping Studies through the Negative temperature Coefficient Region for Propane from 5 to 15 atm” Energy and Fuels 5 485