Abstract
The article presents the results of experimental studies to determine the compressibility of mixtures of diesel fuel with palm oil. To determine the compressibility of fuel mixtures in this work, we used a method based on measuring the speed of sound in the fuel in the injection pipeline. A description of a laboratory setup for measuring the speed of sound propagation in a mixed fuel is given, and the experimental procedure is outlined. The results obtained show that with an increase in the initial compression pressures and the density of fuel mixtures, which depends on the volumetric content of palm oil in them, the speed of sound increases, and the compressibility decreases. Formulas are presented that approximate the experimentally found dependences of compressibility on pressure and the proportion of palm oil in the mixed fuel. The results of the research can be used in modeling the fuel supply process of diesel engines operating on mixtures of diesel fuel and palm oil.
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