Field Service Compatibility of Ashless and Fully Compounded Engine Oil with Two Bead-Type Oxidation Catalysts 750448
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.
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. Download Citation
Author(s):
A. T. Meyers
Pages: 10
Event:
1975 Automotive Engineering Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1975 Transactions-V84-A
Related Topics:
Carbon monoxide
Catalysts
Test procedures
Emissions
Wear
Corrosion
Composite materials
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