Tribological properties of biodiesel fuel and its mixtures with diesel fuel

Abstract

Implementation of biodiesel fuel in bus fleet or other responsible transport requires research of biodiesel properties, influencing lifetime of machines and performance quality. One of important side of fuel properties is tribological properties of fuels and mixtures of them with diesel fuel. Due to different origin and chemical structure, real fuel can contain non-stable states of liquid with undesired behavior in real fuel system. Such situation can cause undesired wearing of sliding surfaces in case of low lubricating film, seizing of jets in case of undesired sticking to metal and create big general resistance of fuel system. Aim of the paper is to reveal results and noticed properties of such mixtures using HVAC test and create some points in stable mixture behavior. Paper includes description of experiment, experiment equipment, methodology of experiment. Further results and graphs of most remarkable tests are presented and conclusions are made.