This content is not included in your SAE MOBILUS subscription, or you are not logged in.
The Effects of Compression Ratio on Nitric Oxide and Hydrocarbon Emissions from a Spark-Ignition Natural Gas Fuelled Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 24, 1997 by SAE International in United States
Annotation ability available
Steady state experiments on a single cylinder spark ignition engine were performed to investigate the effects of compression ratio on nitric oxide and hydrocarbon emissions using natural gas as the fuel. Compression ratios between 8 and 15 were investigated. Constant throttle tests were performed at different equivalence ratios, throttle openings and spark timing settings covering a wide range of these parameters.
In general, nitric oxide and hydrocarbon emissions were found to increase with compression ratio at fixed spark timing. With optimised (MBT) spark timing, however, reductions of emissions could be achieved at high compression ratio. This indicates that a fully optimised natural gas fuelled engine may be able to achieve high efficiency and low emissions.
|Technical Paper||Experimental Investigation of Performance and Emissions of a Sequential Port Injection Compressed Natural Gas Converted Engine|
CitationTakagaki, S. and Raine, R., "The Effects of Compression Ratio on Nitric Oxide and Hydrocarbon Emissions from a Spark-Ignition Natural Gas Fuelled Engine," SAE Technical Paper 970506, 1997, https://doi.org/10.4271/970506.
- Evans, R.L. Goharian, F. Hill, P.G. “The Performance of a Spark-ignition Engine Fuelled with natural Gas and Gasoline” SAE 840234 1984
- Fleming R D O'Neal G B “Potential for Improving the Efficiency of a Spark Ignition Engine for Natural Gas Fuel” SAE Paper 852073 1985
- Adam T G “The Development of Ford's Natural Gas Powered Ranger” SAE Paper 852277 1985
- Takagaki, S.S. “Compression Ratio and Exhaust Emissions in a Spark Ignition Engine Powered by Natural Gas” Dept. of Mech.Eng, The University of Auckland 1994
- Heyman G A Turner G S “Some Considerations in Determining Oxides of Nitrogen in Stack Gases by Chemiluminescence Analyser: ISA Transactions 15 3 1976 209 213
- Heywood J B “Internal Combustion Engine Fundamentals” McGraw-Hill Book Company 1989
- Lee, R.C. “Effect of Compression Ratio, Mixture Strength, Spark Timing and Coolant Temperature upon Exhaust Emissions and Power” SAE 710832 1971
- Brinkman N D “Effect of Compression Ratio on Exhaust Emission and Performance of a Methanol-Fueled Single-Cylinder Engine” SAE Paper 770791 1977
- Felt A E Krause S R “Effects of Compression Ratio Changes on Exhaust Emissions” SAE Paper 710831
- Brinkman N D “Ethanol Fuel - A Single Cylinder Engine Study of Efficiency and Exhaust Emissions” SAE Paper 810345 1981
- Raine, R.R. Stone, C.R. Gould, J. “Modelling of Nitric Oxide Formation in Spark Ignition Engines with a Multi-zone Burned Gas” Comb. and Flame 102 241 255 1995
- Raine, R.R. Zhang, G. Pflug, A. “Comparison of Emissions from Natural Gas and Gasoline Fuelled Engines - Total Hydrocarbon and Methane Emissions and Exhaust Gas Recirculation Effects” SAE paper 1997
- Daniel, W.A. “Engine Variable Effects on Exhaust Hydrocarbon Composition: A Single Cylinder Engine Study with Propane as Fuel” SAE 670124 1967