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Increased Burning Rates Offer Improved Fuel Economy-NOx Emissions Trade-Offs in Spark-Ignition Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1979 by SAE International in United States
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Mass burning rate was varied by using two single-cylinder engines, each fitted with different combustion-chamber geometries. The slower-burning chamber incorporated a side-mounted spark plug, the faster-burning chamber combined a more compact combustion space and a centrally located spark plug.
The faster-burning engine exhibited an improved efficiency-NOx emissions trade-off, primarily due to the engine's higher maximum thermal efficiency and greater tolerance to charge dilution by recirculated exhaust gas.
Faster burning also reduced cyclic variability in combustion, increased the knock-limited thermal efficiency, but offered no advantage in regard to hydrocarbon emissions.
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CitationTuttle, J. and Toepel, R., "Increased Burning Rates Offer Improved Fuel Economy-NOx Emissions Trade-Offs in Spark-Ignition Engines," SAE Technical Paper 790388, 1979, https://doi.org/10.4271/790388.
- Mayo J. “The Effect of Engine Design Parameters on Combustion Rate in Spark-Ignited Engines,” SAE Paper 750355 1975
- Anderson V. L. McLean R. A. “Design of Experiments - A Realistic Approach,” Marcel Dekker, Inc. New York 1974 353
- Krieger R. B. Borman G. L. “The Computation of Apparent Heat Release for Internal Combustion Engines,” ASME Paper 66-WA/DGP-4 1966
- Bolz R. E. Breitwieser R. “The Effect of Compression Ratio, Cooled Exhaust Gas, and Inlet Air Temperature on Knock-Limited Performance,” NACA ARR E-124 1943
- Miller A. E. Suliss S. “Recycling Exhaust Gas for Suppression of Knock in Internal-Combustion Engines,” American Petroleum Institute 33 1953
- Caris D. F. Mitchell B. J. McDuffie A. D. Wyczalek F. A. “Mechanical Octanes for Higher Efficiency,” Trans. SAE 64 1956
- Amano M. Nakada M. Kobayahi N. “An Approach to Evaluate Vehicle Driveability Through Engine Dynamometer Testing,” paper presented at the Third International Symposium on Automation of Engine and Emission Testing September 1974
- Nagayama I. Araki Y. lioka Y. “Effects of Swirl and Squish on S. I. Engine Combustion and Emission,” SAE Paper 770217 1977
- Burington R. S. Handbook of Mathematical Tables and Formulas McGraw-Hill Book Company 1965
- Arrigoni V. Calvi F. Corvetti G. Pozzi V. “Turbulent Flame Structure as Determined by Pressure Development and Ionization Intensity,” SAE Paper 730088 1973
- Kuroda H. Nakajima Y. Sugihara K. Takage Y. Muranaka S. “The Fast Burn with Heavy EGR, New Approach for Low NOx and Improved Fuel Economy,” SAE Paper 780006 1978