Performance and Emissions of a Methane Fueled V-Twin Four Stroke Spark Ignited Engine
International Journal of Energy and Power Engineering
Volume 3, Issue 1, February 2014, Pages: 21-27
Received: Jan. 31, 2014; Published: Mar. 10, 2014
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Authors
Daniel John Piekarski, Rochester Institute of Technology, Rochester, USA
James H. Lee, Rochester Institute of Technology, Rochester, USA
Robert D. Garrick, Rochester Institute of Technology, Rochester, USA
Andrew Smith, Rochester Institute of Technology, Rochester, USA
Kenneth E. Krapf, Rochester Institute of Technology, Rochester, USA
John Bulzacchelli, Rochester Institute of Technology, Rochester, USA
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Abstract
This paper discusses the on-going study of a modified two-cylinder V-twin engine used to research and analyze natural gas combustion. The purpose of the experimentation is to determine the feasibility of Natural Gas as an alternative fuel for automotive and stationary power generation applications. During testing the engine was operated under various loads and RPMs. The compression ratio (CR) of the engine was increased from 9.0:1 to 13.8:1 with the expectation of improved fuel combustion and improved emissions. The Exhaust Gas Recirculation (EGR) and air-fuel ratio (AFR) were also varied to determine optimal levels that would improve emissions without compromising excessive power (hp). Lean limit analysis was conducted to understand the effect of increased AFR on combustion and emissions. Results from testing confirmed an emissions benefit of going from low compression to high compression. The Total Hydrocarbons (THC) decreased 25%, Carbon Monoxide levels decrease by 48% and the Oxides of Nitrogen (NOx) decreased by 20%. A low percentage of EGR, between 3-6 %, helped reduce Oxides of Nitrogen (NOx) emissions from over 830 ppm to less than 450 ppm, an improvement of almost 50%, with less than a 2% increase in THC and CO. Power (hp) actually improved by about 1.5% with 3% EGR. Increasing the AFR proved to decrease emissions but at a cost of power and the lean limit of the engine was found to be between 22 and 23 AFR. At 22 AFR the THC emissions decreased by 40%, CO emission by 90% and NOx emissions by almost 50%, but the power decreased by over 35%.
Keywords
Compressed Natural Gas, Combustion, Emissions, Exhaust Gas Recirculation, Air Fuel Ratio, Compression Ratio
To cite this article
Daniel John Piekarski, James H. Lee, Robert D. Garrick, Andrew Smith, Kenneth E. Krapf, John Bulzacchelli, Performance and Emissions of a Methane Fueled V-Twin Four Stroke Spark Ignited Engine, International Journal of Energy and Power Engineering. Vol. 3, No. 1, 2014, pp. 21-27. doi: 10.11648/j.ijepe.20140301.14
References
[1]
Ramadhas AS. Alternative Fuels for Transportation. Boca Raton, FL: CRC Press; 2011.
[2]
Shook B. Gas-producing states promoting natural gas vehicles. Natural Gas Week [serial online]. 2011;27:8.
[3]
Why Natural Gas-Powered Vehicles? Fleet Maintenance [serial online]. 2012;16:18.
[4]
Canakci M, Erdil A, Arcaklioğlu E. Performance and exhaust emissions of a biodiesel engine. Applied Energy. 2006;83:594-605.
[5]
Abdullah S., Kurniawan W. H., Khamas M., Ali Y. Emission analysis of a compressed natural gas direct-injection engine with a homogenous mixture. International Journal of Automotive Technology, Vol. 12, No. 1, pp. 29−38 (2011)
[6]
Ha, D., Park, J., Yeom, J., Ha, J. et al., "Study on Combustion and Emission Characteristics of CNG Fueled RI-Engine," SAE Technical Paper 2007-01-3621, 2007, doi:10.4271/2007-01-3621. http://papers.sae.org/2007-01-3621
[7]
Akansu SO, Dulger Z, Kahraman N, Veziroǧlu TN. Internal combustion engines fueled by natural gas—hydrogen mixtures. International Journal of Hydrogen Energy. 2004;29:1527-1539.
[8]
Zeng K, Huang Z, Liu B, et al. Combustion characteristics of a direct-injection natural gas engine under various fuel injection timings. Applied Thermal Engineering. 2006;26:806-813.
[9]
S. Rousseau, B. Lemoult, M. Tazerout. Combustion characteristics of natural gas in a lean burn spark-ignition engine. Proceedings of the Institution of Mechanical Engineers, Part D, Journal of Automobile Engineering, 213 (5) (1999), pp. 481–490
[10]
Blank, D., "CNG/Methane-Combustion in a Homogeneous-Combustion Radical-Ignition D.I. Diesel Engine," SAE Technical Paper 2007-01-0047, 2007.
[11]
U.S. Energy Information Administration, Natural Gas Explained: What are Proved Reserves?, Aug, 2012.
[12]
Kweon C, Pratapas J, Foster D. Homogeneous charge compression ignition (HCCI) engine fueled with natural gas for stationary power generation applications; Proceedings of PWR2006: 2006 ASME Power Conference May 2-4, 2006, Atlanta, Georgia USA
[13]
Sen AK, Litak G, Yao B-, Li G-. Analysis of pressure fluctuations in a natural gas engine under lean burn conditions. Applied Thermal Engineering. 2010;30:776-779.
[14]
Manivannan, A., porai, P., Chandrasekaran, S., and Ramprabhu, R., "Lean Burn Natural Gas Spark Ignition Engine - An Overview," SAE Technical Paper 2003-01-0638, 2003
[15]
Zhao, F., Asmus, T. W., Assanis, D. N., Dec, J. E., Eng, J. A., and Najt, P. M., 2003, "Homogeneous Charge Compression Ignition (HCCI) Engines," SAE Inc., Warrendale, PA, pp.325-342, Chap.4.
[16]
Wyszynnski, L., Aboagye, R., Stone, R., and Kalghatgi, G., "Combustion Imaging and Analysis in a Gasoline Direct Injection Engine," SAE Technical Paper 2004-01-0045, 2004.
[17]
Flowers, D., 2005, "HCCI-ARICE Natural Gas Engine Development for Stationary Power Applications in California," 2nd Annual Advanced Stationary Reciprocating Engine RD&D: Moving Forward in Low-Emissions and High-Efficiency Technologies, Diamond Bar, CA.
[18]
Müller, M., "General Air Fuel Ratio and EGR Definitions and their Calculation from Emissions," SAE Technical Paper 2010-01-1285, 2010.
[19]
Bysveen M. Engine characteristics of emissions and performance using mixtures of natural gas and hydrogen. Energy. 2007;32: 482-489.
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