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Lubricant degradation, transport and the effect of extended oil drain intervals on piston assembly tribology

By M.S. Stark, J.J. Wilkinson, P.M. Lee, M. Priest, J.R. Lindsay-Smith, R.I. Taylor and S. Chung


There are ever increasing demands on lubricant manufacturers to meet governmental legislation and customer needs by improving fuel economy, engine durability and exhaust system compatibility as shown by the introduction of GF4 and move towards GF5 specification oils. This has created an ever increasing need to understand how oil degrades in an engine and how this degraded oil affects piston assembly tribology. This review conference paper will give an overview of a collaborative project that has been undertaken to further enhance the understanding of how lubricant degrades in an operating engine, its transport through the engine and effect upon piston assembly tribology

Year: 2006
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