Title: Emission of phosphorus-containing and phosphorus-free fully formulated crankcase oil using an engine dynamometer

Authors: Hakan Kaleli, Behrooz Khorramian

Addresses: Yildiz Teknik Universitesi, Makine Fakiiltesi, Makine Miihendisligi Boliimii, Otomotiv Anabilim Dali, 80750 Besiktas-Istanbul, Turkey. ' Stevens Institute of Technology, Castle Point on Hudson, Hoboken NJ 07030, USA

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.

Keywords: catalytic converters; CO emissions; HC emissions; engine performance; phosphorus-free crankcase oil; automotive emissions; engine oil formulations; exhaust emissions.

DOI: 10.1504/IJVD.2000.005169

International Journal of Vehicle Design, 2000 Vol.24 No.2/3, pp.137 - 156

Published online: 09 Sep 2004 *

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