Emission of phosphorus-containing and phosphorus-free fully formulated crankcase oil using an engine dynamometer
by Hakan Kaleli, Behrooz Khorramian
International Journal of Vehicle Design (IJVD), Vol. 24, No. 2/3, 2000

Abstract: Emissions systems' durability is influenced by many engine oil formulation variables. Previous studies have suggested that emissions system durability is optimised by a high metal/phosphorus ratio. In this work, a systematic study was conducted to determine the effect of phosphorus and phosphorus-free additives in the lubricant on exhaust emissions using an engine dynamometer for 22 minutes. Within experimental accuracy, both phosphorus-free lubricants have shown satisfactory engine performance characteristics and similar HC emissions under identical engine test conditions. However, there might be a marginal improvement of carbon monoxide emission by phosphorus-free oils over the phosphorus-containing oils.

Online publication date: Thu, 09-Sep-2004

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