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The Performance of a Spark-Ignition Engine Fuelled with Natural Gas and Gasoline
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Abstract
An experimental evaluation has been made of the power output, specific fuel consumption and thermal efficiency of a modern 4 cylinder spark ignition engine operating on gasoline and natural gas. Tests have been conducted at various speeds, spark advance angles and air-fuel ratios, all at wide open throttle. Performance on gasoline and natural gas has been compared and optimum spark advance determined for natural gas operation. With natural gas operation, brake power was found to decrease by between 11.3% and 16.6% compared to gasoline operation. Brake specific fuel consumption was found to decrease with natural gas operation, although this is due to the higher calorific value of natural gas. In terms of brake thermal efficiency, operation with natural gas was found to be less efficient than with gasoline. This is due to the lower flame speed of natural gas and the proportionally higher friction losses at the reduced power levels.
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Citation
Evans, R., Goharian, F., and Hill, P., "The Performance of a Spark-Ignition Engine Fuelled with Natural Gas and Gasoline," SAE Technical Paper 840234, 1984, https://doi.org/10.4271/840234.Also In
References
- Pearce, M. “Liquid Methane as a Motor Fuel,” Proc. Automobile Division, I. Mech. E. 155 1949
- Moore, N. P. W. Roy, M. B. N. “Comparative Studies of Methane and Propane as Engine Fuels,” Proc. I. Mech. E. 170 1956 1137
- Karim, G. A. Ali, I. A. “The Effects of Low Ambient Temperatures on the Combustion of Natural Gas in a Single Cylinder Spark Ignition Engine,” SAE 730084
- Baets, J. E. “Combustion of Natural Gas and Gasoline in A Spark-Ignited Engine,” UBC Report AFL-82-02 1982
- Perry, C. Evans, R. L. Hill, P. G. “A Review of Performance of Natural Gas Fuelled Otto Cycle Engines,” UBC Report, AFL-82-05 1982
- Genslak, S. L. “Evaluation of Gaseous Fuels for Automobiles,” SAE 720125
- Affleck, W. S. Harrow, G. A. Mills, W. D. “Converting A Small Car to LNG: What Are the Problems and What Can It Do For Economy and Emissions?” SAE 760376
- Fleming, R. D. Allsup, J. R. “Emission Characteristics of Natural Gas as An Automobile Fuel,” SAE 710833
- Wong, J. K. S. “Studies of Mixtures of Methane and Carbon Dioxide as Fuels in a Single Cylinder Engine,” N. R. C. Div, Mech. Eng. Report MP 70 September 1976
- Blackmore, D. R. Thomas, A. “Fuel Economy of the Gasoline Engine,” Macmillan 1977 15 16
- Ryan, T. W. Lestz, S. “The Laminar Burning Velocity of Isooctane, N-Heptane, Methanol, Methane, and Propane at Elevated Temperature and Pressures in the Presence of a Diluent,” SAE 800103 1980