This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Hydrocarbon Emissions from a Gas Fueled SI Engine under Lean Burn Conditions
Technical Paper
1999-01-3512
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The concentrations of individual exhaust hydrocarbon species were measured as a function of air-fuel ratio and EGR in a 2-liter four-cylinder engine using a gas chromatography, for natural gas and LPG. NMHC in addition to the species of HC, other emissions such as CO2, CO and NOx were at 1800rpm for two compression ratios (8.6 and 10.6) and various EGR ratios up to 7%. Fuel conversion efficiencies were also investigated together with emissions to study the effect of engine parameters on the combustion performances in gas engines especially under the lean burn conditions.
It was found that CO2 emission decreased leaner mixture strength, the higher compression ratio and certainly with smaller C value of fuel. HC emissions from LPG engine consisted primarily of propane (larger 60%), ethylene and propylene, while main emissions from natural gas were methane (larger than 60%), ethane, ethylene and propane on the average. Natural gas was proved to give the less ozone formation than LPG fuel. This was accomplished by reducing the emissions of propylene, which has relatively high MIR factor, and propane that originally has large portion of LPG. In addition, natural gas shows a benefit in other emissions (i.e. NMHC, NOx, CO2 and CO), SR and BSR values except fuel conversion efficiency.
Authors
Topic
Citation
Kim, C. and Bae, C., "Hydrocarbon Emissions from a Gas Fueled SI Engine under Lean Burn Conditions," SAE Technical Paper 1999-01-3512, 1999, https://doi.org/10.4271/1999-01-3512.Also In
References
- Kaiser E.W. Siegl W.O. Anderson R.W. “Fuel Structure and Nature of Engine-Out Emissions” SAE 941960 1994
- Kaiser E.W. 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 SI Engine” SAE 950159 1995
- Jensen T.E. Siegl W.O. Richert J.F.O. Lipari F. Loo J.F. Prostak A. Sigsby J.E. “Advanced Emission Speciation Methodologies for the Auto/Oil Air Quality Improvement Research Program-I. Hydrocarbons and others” SAE 920320 1992
- Siegl W.O. Richert J.F.O. Jensen T.E. Schuetzle D. Swarin S.J. Loo J.F. Prostak A. Nagy D. Schlenker A.M. “Improved Emissions Speciation Methodology for Phase II of the Auto/Oil Air Quality Improvement Research Program-Hydrocarbons and Oxygenates” SAE 930142 1993
- Russell A.G. Stoierre D. Milford J.B. “Ozone Control and Methanol Fuel Use” Science January 1990
- Weaver C.S. Austine T.C. Rubenstein G.S. “Ozone Benefits of Alternative Fuels; a Reevaluation Based on Actual Emissions Data and Updated Reactivity Factors” Sierra Research April 13 1990
- Hirita T. Kojima K. Yakushiji K. Inoue T. “Effects of Exhaust Emission Control Devices and Fuel Composition on Speciated Emissions of SI Engine” SAE 922180 1992
- Kaiser E.W. Rothschild W.G. Lavoie G.A. “The Effect of Fuel and Operating Variables on Hydrocarbon Species Distributions in the Exhaust from a Multi-cylinder Engine” Combustion Science and Technology 32 245 265 1983
- Poulsen J.H. Wallace J.S. “Operating Parameter Effects on the Speciated Hydrocarbon Emissions from a Natural Gas Fueled Engine” SAE 942007 1994
- Whitney K.A. Bailey B.K. “Determination of Combustion Products from Alternative Fuels-Part I: LPG and CNG Combustion Products” SAE 941903 1994
- 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 SI Engine” SAE 950163 1995
- Drobot K. Cheng W.K. Trinker F.H. Kaiser E.W. Siegl W.O. Cotton D.F. Underwood J. “Hydrocarbon Oxidation in the Exhaust Port and Runner of a SI Engine” Combustion and Flame 99 422 430 1994
- Kubo S. Yamamoto M. Kizaki Y. Yamazaki S. Tamaka T. Nakanishi K. “Speciated Hydrocarbon emissions of SI engine during cold start and warm-up” SAE 932706 1993
- Heywood J.B. “Internal Combustion Engine Fundamentals” McGRAW-HILL INTERNATIONAL EDITIONS 1989
- Fleming R.D. O'neal G.B. “Potential for Improving the efficiency of a SI engine for natural gas fuel” SAE 852073 1983