Fuel-Lubricant Interactions: Critical Review of Recent Work

A critical review of recent work on fuel lubricant interactions is undertaken. The focusses liquid fuels used in diesel and gasoline vehicles. amount that contaminates the depends driving conditions, engine design, type, type. When a lubricant, viscosity will change (it usually decrease), sump oil level may increase, there be tendency for more sludge formation, an impact friction wear, low speed pre-ignition could occur. increased use biofuels (particularly biodiesel) require reduction drain intervals, borne additives contaminate lubricant. move towards active regeneration particulate filters by delayed post-injection hybrid electric vehicles equipped with stop-start systems lead to dilution. This concern engines, since significant dilution persist at temperatures range 100–150 °C (whereas engines volatile have substantially evaporated these temperatures). It anticipated research into interactions, particularly needed near future.