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The Effects of TEL on Oxidation in an Exhaust Manifold Reactor - A Single-Cylinder Engine Study
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Abstract
In rich-exhaust manifold reactors, complete oxidation of carbon monoxide (CO) and hydrocarbons (HC), generally characterized by luminous conditions and high temperatures, is desirable. Some of the conditions necessary for luminous oxidation in an insulated exhaust reactor have been explored with a single-cylinder engine using both leaded and unleaded isooctane. Threshold-reactor air-injection rates required for luminous oxidation in the reactor were determined for engine air-fuel ratios (A/F) between 11.2 and 14.1.
Leaded isooctane produced higher unburned HC concentrations in the exhaust than unleaded isooctane when injection air was introduced as well as when no air was added. In addition, oxidation of CO in the reactor was hindered in the tests with leaded isooctane. During one set of experiments, conditions were such that luminous oxidation in the reactor was achieved with the unleaded fuel, but was not achieved with the leaded fuel.
In warmup studies, a longer time was required to reach luminous conditions in the reactor when leaded isooctane was used in the engine than when unleaded isooctane was used.
Authors
Citation
Schwing, R., "The Effects of TEL on Oxidation in an Exhaust Manifold Reactor - A Single-Cylinder Engine Study," SAE Technical Paper 710844, 1971, https://doi.org/10.4271/710844.Also In
References
- Alperstein M. Bradow R. L. “Investigations Into the Composition of End Gases from Otto Cycle Engines.” SAE Transactions 75 1967 paper 660410
- Townsend D. T. A. Mandlekar M. R. “The Influence of Pressure on the Spontaneous Ignition of Inflammable Gas-Air Mixtures. II-Pentane-Air Mixtures.” Proc. Roy. Soc., A 143 1933 168 176
- Schwing R. C. “An Analytical Framework for the Study of Exhaust Manifold Reactor Oxidation.” SAE Transactions 79 1970 paper 700109
- Stebar R. F. Brownson D. A. “Factors Influencing the Effectiveness of Air Injection in Reducing Exhaust Emissions.” SAE Progress and Technology 12 “Vehicle Emissions-Part II,” New York Society of Automotive Engineers, Inc. 1967
- Federal Register 33 108 June 4 1968
- D'Alleva B. A. Lovell W. G. “Relation of Exhaust Gas Composition to Air-Fuel Ratio.” SAE Transactions 38 1936 90 98 116
- Blenk M. H. Franks R. G. E. “Math Modeling of an Exhaust Reactor.” Paper 710607 SAE Mid-Year Meeting Montreal June 1971
- Lang R. J. “A Well-Mixed Thermal Reactor System for Automotive Emission Control.” Paper 710608 SAE Mid-Year Meeting Montreal June 1971
- Cantwell E. N. Rosenlund I. T. Barth W. J. Ross S. W. “Recent Developments in Exhaust Manifold Reactor Systems.” Automobile Division, The Institution of Mechanical Engineers London May 11 1970
- Cantwell E. N. Rosenlund I. T. Barth W. J. Kinnear F. L. Ross S. W. “A Progress Report on the Development of Exhaust Manifold Reactors.” Paper 690139 SAE Automotive Engineering Congress Detroit January 1969
- Jaimee A. et al. “Thermal Reactor - Design, Development and Performance.” SAE Transactions 80 1971 paper 710293
- Gagliardi J. C. “The Effect of Fuel Antiknock Components and Deposits on Exhaust Emissions.” Paper 670128 SAE Automotive Engineering Congress Detroit January 1967
- Gagliardi J. C. Ghannam F. E. “Effects of Tetraethyl Lead Concentration on Exhaust Emissions in Customer Type Vehicle Operation.” Paper 690015 SAE Automotive Engineering Congress Detroit January 1968
- Doelling R. P. Gerber A. F. Walsh M. P. “Effects of Gasoline Characteristics on Automotive Exhaust Emissions.” ASTM Special Publication 487 April 1971 20
- Mick S. SAE Meeting, Emissions, Session I Detroit January 1969