This article presents a mathematical model of the fuel flow turbulisation processes in fuel tubular injectors channels of compression ignition engines. As turbulisator, proposed the use of two or more intersecting channels on the surface of the needle made in the form of left and right threads. The main attention was paid to the use of acoustic resistance parameter in the mathematical description of physical phenomena, which allows verification of the proposed model in laboratory studies of fuel, and retardation research of compression ignition engines