Обґрунтування впливу температури компонентів сумішевого палива на роботу двигуна

Abstract

Rapeseed oil is widely used as a biological component of diesel mixed fuels. However, the technology of cultivation of rape is expensive, its crops largely depend on the growth zone and weather conditions. The physical and chemical parameters of fuels play a significant role in the process of mixing in the engine cylinders and fuel supply. One of these criteria is the temperature values of both mixed fuels and the environment. Therefore, the purpose of calculations is to study the properties of promising components of diesel mixed fuel. As the studied plant components of the diesel fuel mixture, the oils obtained by cold pressing out from the seeds of the following oilseeds were taken: rijia, mustard, buckthorn, oil radish, oil flax, safflower and soya.The indicators of technological, chemical, physical and calorific properties are determined, mathematical analysis is performed and the lower heat of combustion of these vegetable oils and diesel fuel mixture is calculated. The quality of the mixing of the biological and mineral components of the diesel fuel mixture was indirectly evaluated by the magnitude of the optical density.Currently, the most studied source of plant material is rape. However, the use of oils and other crops deserves attention. The most simple and accessible way of using rapeseed oil is dilution with diesel fuel. When using mixed fuels, the peculiarities ofthe physical properties of vegetable oils and fuels on their basis have a noticeable influence on the parameters of the process of fuel supply, resulting in the transformation of the characteristics of injection and fuel spraying and subsequent processes of mixing and combustion. An important component is the temperature of fuels and their mixtures, especially at the time of mixing. It has been established that in order to improve the technical and economic performance of engines when using diesel fuel, it is necessary to adjust the temperature of the components of the mixed fuel depending on the ambient temperature and the fuel itself.