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Field Service Compatibility of Ashless and Fully Compounded Engine Oil with Two Bead-Type Oxidation Catalysts
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English
Abstract
Eight catalytically equipped vehicles were used to compare the effects of an ashless, nonphosphorus lubricant and a conventional SE lubricant on the deterioration of two different types of bead catalyst operating in field service. Composite CO emissions (measured by the 1975 Federal Test Procedure) approximately doubled during the 25,000-mile test with both oils relative to the fresh catalyst. No significant increase in composite HC emissions was shown. There were no significant differences between the two oils with respect to either HC or CO emissions at the end of the test. Analysis of the aged catalyst showed average phosphorus contamination of 0.07 wt % with the conventional oil compared to 0.01 wt % with the ashless oil. The higher level of phosphorus contamination with the conventional oil was not accompanied by an increase in catalyst deterioration relative to the ashless oil.
Authors
Citation
Meyers, A., "Field Service Compatibility of Ashless and Fully Compounded Engine Oil with Two Bead-Type Oxidation Catalysts," SAE Technical Paper 750448, 1975, https://doi.org/10.4271/750448.Also In
References
- Giacomazzi Roy A. Homfeld Max F. “The Effect of Lead, Sulfur, and Phosphorus on the Deterioration of Two Oxidizing Bead-Type Catalysts,” Paper 730595 SAE National Automobile Engineering Meeting Detroit May 1973
- Gagliardi J. C. Smith C. S. Weaver E. E. “Effect of Fuel and Oil Additives on Catalytic Converters,” API Paper 63-72 May 1972
- Makin V. W. “Technical Appendix to Testimony,” Environmental Protection Agency March 14 1973
- Herod et al. “An Engine Dynamometer System for Measurement of Catalytic Converter Performance,” Paper 730557 SAE National Automobile Engineering Meeting Detroit May 1973
- Wiers W. W. Scheffler C. E. “Carbon Dioxide (CO 2 ) Tracer Technique for Modal Mass Exhaust Emission Measurement,” SAE Transactions 81 1972 Paper 720126