This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Effect of Turbulence on the Hydrocarbon Emissions from Combustion in a Constant Volume Reactor
Annotation ability available
Sector:
Language:
English
Abstract
A cylindrical combustion bomb with dynamic charging system and electro-hydraulic sampling valve is used to study the effects of turbulence on hydrocarbon (HC) emissions from a quench layer and from artificial crevices. The turbulence level is varied by changing the delay time between induction of combustible charge and ignition. Propane-air mixtures were studied over an initial pressure range of 150 to 500 kPa and equivalence ratios of 0.7 to 1.4.
Sampling valve experiments show that quench-layer fuel hydrocarbons are extensively oxidized within 5 ms of flame arrival under laminar conditions and that turbulence further reduces the already low level. Upper limit estimates of the residual wall layer HC concentration show that residual quench layer hydrocarbons are only a small fraction of the exhaust HC emission.
Artificial crevice experiments show that the exhaust HC emission is directly proportional to crevice volume and that the initial equivalence ratio strongly influences the species distribution in the exhaust. However, the experiments show little effect of turbulence on the HC emission from these crevices,
Recommended Content
Authors
Citation
Isack, A., Askey, J., Adamczyk, A., Lavoie, G. et al., "The Effect of Turbulence on the Hydrocarbon Emissions from Combustion in a Constant Volume Reactor," SAE Technical Paper 840366, 1984, https://doi.org/10.4271/840366.Also In
References
- Panduranga V. 1972 Correct turbulence -- A way to reduce the concentration of unburnt hydrocarbons from automotive engines Combustion and Flame 18 461
- Adamczyk A.A. Kaiser E.W. Lavoie G.A. Isack A.J. 1983 Single-pulse sampling valve measurements of wall-layer hydrocarbons in a combustion bomb Combustion and Flame 52 1
- Blint R.J. Bechtel J.H. 1982 Hydrocarbon combustion near a cooled wall SAE paper no. 820063 The Society of Automotive Engineers
- LoRusso J.A. Kaiser E.W. Lavoie G.A. 1981 Quench-layer contribution to exhaust hydrocarbons from a spark-ignition engine Combustion Science and Technology 25 121
- Weiss P. Keck J.C. 1981 Fast sampling valve measurements of hydrocarbons in the cylinder of a CFR engine SAE paper no. 810149 The Society of Automotive Engineers
- Kurkov A.P. Mirsky W. 1968 An analysis of the mechanism of flame extinction by a cold wall Twelfth Symposium (International) on Combustion The Combustion Institute Pittsburg, Pennsylvania
- Adamczyk A.A. Lavoie G.A. 1978 Laminar head-on flame quenching: A theoretical study SAE transactions 87 The Society of Automotive Engineers
- Westbrook C.K. Adamczyk A.A. Lavoie G.A. 1981 A numerical study of laminar wall quenching Combustion and Flame 40 81
- Adamczyk A.A. Kaiser E.W. Cavolowski J.A. Lavoie G.A. 1981 An experimental study of hydrocarbon emissions from closed vessel explosions Eighteenth Symposium (International) on Combustion The Combustion Institute 1695
- Adamczyk A.A. Kaiser E.W. Lavoie G.A. 1983 A combustion bomb study of the hydrocarbon emissions from engine crevices Combustion Science and Technology 33 261
- Sellnau M.C. Springer G.S. Keck J.C. 1981 Measurements of hydrocarbon concentrations in the exhaust products from a spherical combustion bomb SAE paper no. 810148 The Society of Automotive Engineers
- Wentworth J.T. 1971 The piston crevice volume effect on exhaust hydrocarbon emissions Combustion, Science and Technology 4 97
- Bergner P. Eberius H. Pokorny H. 1979 Flame quenching and exhaust hydrocarbons in a combustion bomb as a function of pressure, temperature and equivalence ratio for methanol and other alcohols Third Alcohol Symposium Asilomar, Ca.
- Lavoie G.A. Adamczyk A.A. 1983 The effects of turbulence on hydrocarbon emissions D.O.E. Final report for contract DE-AC-04-79ET-15303
- LoRusso J.A. Lavoie G.A. Forgacs R. Jeryan R.A. Erranti J. 1983 Electro-hydraulic sampling valve Scientific Instruments
- Landau L.D. Lifshitz E.M. 1959 Fluid Mechanics Pergamon Press 81 86
- LoRusso J.A. Kaiser E.W. Lavoie G.A. 1983 In-cylinder measurements of wall layer hydrocarbons in a spark ignited engine Combustion Science and Technology 33 75
- Tabaczynski R.J. Trinker F.H. Shannon B.A.S. 1980 Further refinement and validation of a turbulent flame propagation model for spark ignition engines Combustion and Flame 39 111
- Kaiser E.W. Rothschild W.G. Lavoie G.A. 1983 The effect of fuel and operating variables on hydrocarbon species distribution in the exhaust from a multcylinder engine Combustion Science and Technology 32 245
- Kaiser E.W. Rothschild W.G. Lavoie G.A. 1983 The effect of fuel-air equivalence ratio and temperature on the structure of laminar propane-air flames Combustion Science and Technology 33 1130
- Hautman D.J. Dryer F.L. Schug K.P. Glassman I. 1981 A multiple-step overall kinetics mechanism for the oxidation of hydrocarbons Combustion Science and Technology 25 219
- Lavoie G.A. 1978 Correlations of combustion data for S.I. engine calculations -- Laminar flame speed, quench distance and global reaction rates SAE paper no 780229 Society of Automotive Engineers
- Shyy W. 1982 Analysis of hydrocarbon emissions from conventional spark-ignited engines Ph.D. thesis University of Michigan Ann Arbor, Michigan
- Friedman R. Johnson W.C. 1950 The wall-quenching of laminar flames as a function of pressure, temperature and air-fuel ratio Journal of Applied Physics 21 791
- Wolfhard H.G. Bruszak A.E. 1960 The passage of explosions through narrow cylindrical channels Combustion and Flame 4 149
- Rozlovskii A.I. Zakaznov V.F. 1971 Effect of gas expansion during combustion on the possibility of using flame arrestors Combustion and Flame 17 215
- Wilson R.P. Atallah S. April, 1975 A minimum effective length criterion for flame arrestors Western States Section Meeting of the Combustion Institute The Combustion Institute Pittsburg, Pennsylvania