Abstract
A comparative analysis of properties of petroleum diesel fuel and rapeseed oil is carried out. Numerical studies of the influence of fuel properties on the injection process of fuel are carried out by using ANSYS Fluent. The steady flow of these fuels in the flow channel of an injector nozzle for a 4-stroke turbocharged diesel engine D-245.12S (with cylinder bore-to-stroke ratio 11/12.5) was simulated at the maximum injector needle lift of 0.32 mm. The flow characteristics of petroleum diesel fuel and rapeseed oil - mass fuel consumption, injection velocity, turbulent kinetic energy at the nozzle hole outlet, and the total volume concentration of fuel vapors in the nozzle hole were obtained. The relationship between the turbulent kinetic energy at the nozzle hole outlet and the parameters of the fuel spray fineness is studied. Numerical studies of the relationship between the spray cone angle and the turbulent kinetic energy at the nozzle hole outlet were carried out. A correlation between fuel spraying parameters and the turbulent kinetic energy at the nozzle hole outlet was proposed.
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