INFLUENCE OF VEGETABLE-DERIVED OILS ADDITIVES ON THE DIESEL FUEL LUBRICITY

Abstract

Possibility of practical use of vegetable-derived oils additives (on the example of rape oil) in diesel fuel for increase of its lubricity was considered. Hydrodynamic, thermal loading and, as a result, durability of basic elements of fuel system of the engine including a nozzle, depend on fuel wear-preventive properties, abrasive particle contamination, physical and chemical, elastic properties, burning characteristics. Domestic types of fuel have low wear-preventive, ecological and sanitary properties. All of them conform less to modern ecological requirements. A goal of research is increase of durability of nozzles by improvement of wear-preventive properties of diesel fuels. Estimated Influence on the indicators characterizing wear-preventive properties of fuel (density, kinematic viscosity, a superficial tension, friction coefficient), additives of improvers on the basis of rape oil at a variation of the mass contents. It was showed that at an additive no more than 5% the variation of the fuel parameters characterizing wear-preventive properties is in the limits meeting the requirements of the standard. Use of improvers on the basis of vegetable oils is viable for increase of durability of precision interfaces of a nozzle sprayer as a result of improvement of wear-preventive properties of diesel fuel.