This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Laboratory Assessment of the Oxidation and Wear Performance Capabilities of Low Phosphorus Engine Oils
Technical Paper
2001-01-3541
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
Spring Fuels & Lubricants Meeting & Exhibition
SAE International Fall Fuels & Lubricants Meeting & Exhibition
Language:
English
Abstract
Meeting upcoming stringent emission standards will require that exhaust gas catalyst systems become active very quickly, function at very high efficiencies and maintain those capabilities at high mileages. This means that contamination of the catalysts by engine oil derived poisons must be minimized. Phosphorus compounds, derived from the zinc dialkyldithio-phosphate (ZDTP) additives that provide antiwear and antioxidant activity, are a principal contaminant that can increase catalyst light off times and reduce catalyst efficiency. Therefore, reducing the concentration of, or eliminating, phosphorus in engine oils is desirable. Doing so, however, requires that oils be reformulated to ensure that wear protection will not be compromised and that oxidation stability will be maintained. To address these concerns, laboratory tests for evaluating oil oxidation and wear performance have been developed and used to evaluate developmental low phosphorus oils. Results indicate that good wear performance and oxidation control can be obtained with ZDTP concentrations that are half of current levels (0.05% vs. 0.10%, maximum, for GF-3 oils).
Recommended Content
Authors
Citation
Johnson, M., Korcek, S., Jensen, R., Gangopadhyay, A. et al., "Laboratory Assessment of the Oxidation and Wear Performance Capabilities of Low Phosphorus Engine Oils," SAE Technical Paper 2001-01-3541, 2001, https://doi.org/10.4271/2001-01-3541.Also In
Lubricant Systems, Passenger Car, and Heavy Duty Engine Lubricants
Number: SP-1710; Published: 2002-05-01
Number: SP-1710; Published: 2002-05-01
References
- Darr S. T. Choski R. A. Hubbard C. P. Johnson M. D. McCabe R. W. “Effects of Oil-Derived Contaminants on Emissions from TWC-Equipped Vehicles” SAE Technical Paper 2000-01-1881 2000
- Culley S. A. McDonnell T. F. Ball D. J. Kirby C. W. Hawes S. W. “The Impact of Passenger Car Motor Oil Phosphorus Levels on Automotive Emissions Control Systems” SAE Technical Paper 961898 1998
- Beck D. D. Sommers J. W. DiMaggio C. L. Monroe D. R. Frank D. A. “Impact of Oil-Derived Catalyst Poisons on FTP Performance of LEV Catalyst Systems” SAE Technical Paper 972842 1997
- Roby S. H. Supp J. A. “Effects of Ashless Antiwear Agents on Valve Train Wear and Sludge Formation in Gasoline Engine Testing” Lubrication Engineering 17 December 1997
- Culley S. A. McDonnell T. F. “The Impact of Passenger Car Motor Oil Phosphorus Levels on Engine Durability, Oil Degradation, and Exhaust Emissions in a Field Trial” SAE Technical Paper 952344 1995
- Smolenski D. J. Kabel R. H. “Evaluation of Camshaft and Lifter Wear, Deposits, and Oil Thickening with Low-Phosphorus Engine Oils in Taxicab Service” SAE Technical Paper 861516 1986
- Shiomi M. Mitsui J. Akiyama K. Tasaka K. Nakada M Ohira H. “Formulation Technology for Low Phosphorus Gasoline Engine Oils” SAE Technical Paper 922301 1992
- Colclough T. Marsh J. F. Robson R. “Laboratory and Field Performance of Zero Phosphorus Oils” SAE Technical Paper 910868 1991
- Chamberlain W. B. Zalar F. V. “Balancing Crankcase Lubricant Performance with Catalyst Life” SAE Technical Paper 841407 1984
- Jensen R. K. Korcek S. Johnson M. D. “Assessment of Useful Life of Current Long Drain and Future Low Phosphorus Engine Oils” “Additives 2001” Oxford, UK March 2001 2nd World Tribology Congress Vienna September 2001