Abstract
The paper substantiates the use of a simple and convenient Cole equation form of state making it possible to quickly and with sufficient accuracy determine density, compressibility coefficient and speed of sound of the fuel mixtures at high and ultrahigh injection pressures. A method is described for calculating these elastic properties of the fuel mixtures using the constants of the state equation selected in the form of expressions that determine dependence of the constants on the temperature. Expediency of introducing the universal correction factors is shown, which allows refining calculated values of the fuel mixture elastic properties. Processed experimental data from the literature sources and conducted studies formed the basis to obtain empirical coefficients to determine the correction factors that are refining values of the arbitrary composition mixture properties. The described method and the found coefficients make it possible to hydrodynamically calculate the fuel supply process using modern mathematical models and to design new fuel systems with the higher injection parameters.
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