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Fuel-Air Ratio and Distribution from Exhaust Gas Composition
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English
Abstract
Charts have been developed that, from the composition of gasoline-engine exhaust, indicate quickly and easily:
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1.
Fuel-air ratio of the mixture inducted into the engine.
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2.
Uniformity of mixture distribution and completeness of combustion.
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3.
Internal consistency of the set of exhaust-composition measurements.
Calculation of fuel-air ratio from exhaust composition is common, but the charts have advantages in some applications and less sensitivity to error in CO2 determinations.
Determination of mixture uniformity from total exhaust composition appears to be new. The charts provide a worthwhile check on instrument accuracy, which is not an integral part of other F/A techniques.
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Authors
Citation
Eltinge, L., "Fuel-Air Ratio and Distribution from Exhaust Gas Composition," SAE Technical Paper 680114, 1968, https://doi.org/10.4271/680114.Also In
References
- D'Alleva B. A. Lovell W. G. “Relation of Exhaust Gas Composition to Air-Fuel Ratio,” SAE Trans. 38 1936 90
- Leonard L. S. “Fuel Distribution by Exhaust Gas Analysis.” Paper 379A SAE Summer Meeting St. Louis, Mo. June 5-9, 1961
- Spindt R. S. “Air-Fuel Ratios from Exhaust Gas Analysis.” Paper 650507 SAE Mid-Year Meeting Chicago, Ill. May 17-21, 1965
- Fagley Walter S. Jr. Nunez Richard R. “Exhaust Gas Analysis as a Tool for Measuring Fuel-Air Ratios.” Paper 670483 SAE Mid-Year Meeting Chicago, Ill. May 15-19, 1967
- Gerrish Harold C. Meem J. Lawrence Jr. “The Measurement of Fuel-Air Ratio by Analysis of the Oxidized Exhaust Gas.” NACA Report 757 1943
- Broering Louis C. Jr. “An Evaluation of Techniques for Measuring Air-Fuel Ratio.” Paper 660118 SAE Automotive Engineering Congress Detroit, Mich. Jan. 10-14, 1966
- Cooper D. E. Courtney R. L. Hall C. A. “Radioactive Tracers Cast New Light on Fuel Distribution,” SAE Trans. 67 1959 619
- Daniel W. A Wentworth J. T. “Exhaust Gas Hydrocarbons -- Genesis and Exodus,” Vehicle Emissions, Part I SAE Technical Progress Series 6 192
- Hoel P. G. “Introduction to Mathematical Statistics,” 2d 87 “Normal approximation to binomial” New York John Wiley & Sons 1954
- Thomson G. W. Ethyl Corp. computer program (symbol: DALEX; name: Exhaust Gas Composition from Air-Fuel Ratio) Nov. 4 1965
- Healy W. C. Jr. Thomson G. W. Ethyl Corp. computer program (symbol: DELS; name: Detroit Ethyl Least Squares) June 4 1965
- Huffman A. E. “Computation of Air-Fuel Ratio from CO 2 , CO, and O 2 Content of Dry Exhaust Gas -- Any Hydrocarbon Fuel” and “Method for Computing Air-Fuel Ratio from CO 2 , CO and O 2 in Exhaust Without Assuming a Water-Gas Reaction Constant,” Ethyl Corp. internal communication
- Vickland C. W. Strange F. M. Bell R. A. Starkman E. S. “A Consideration of the High Temperature Thermodynamics of Internal Combustion Engines,” SAE Trans. 70 1962 785
- Steffensen R. J. Agnew J. T. Olsen R. A. “Tables for Adiabatic Gas Temperature and Equilibrium Composition of Six Hydrocarbons,” Purdue Univ. Eng. Bull. 122 Engineering Extension Series May 1966
- Scott Research Laboratories, Inc. “Gas Blend Cross Reference Service, 1967,” Report No. 1 April 13 1967