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Impact of Non-Phosphorus and Non-Ash Engine Oil on After-Treatment Devices
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 13, 2014 by SAE International in United States
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Automobile exhaust gas contains various harmful substances other than carbon dioxide, so exhaust gas post-processing devices have been developed to reduce their environmental load. Engine oil has contributed to the improvement of automobiles' environmental performance due to its excellent fuel-saving and long-drain properties. Recently, the lifetime of an exhaust gas post-processing device has been reported to decrease due to ash and phosphorus in engine oil. We have developed non-phosphorus and non-ash engine oil (NPNA), in which metal-based detergents and zinc dialkyldithiophosphate (ZnDTP) were not contained. We have performed a verification test for NPNA using an actual engine. In a performance test for a diesel particulate filter (DPF), the amount of soot and ash deposited onto a DPF was smaller when NPNA was used than when commercially available engine oil was used. In a performance test for catalysts, the exhaust gas purifying ratio was higher when NPNA was used than when commercially available engine oil was used.
CitationIwasaki, J., Shimizu, Y., Fujita, H., and Kasai, M., "Impact of Non-Phosphorus and Non-Ash Engine Oil on After-Treatment Devices," SAE Technical Paper 2014-01-2782, 2014, https://doi.org/10.4271/2014-01-2782.
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