The calculation of the hydraulic impact in the diesel high pressure pipes

The paper concerns the hydraulic impact within the diesel high-pressure pip es. Impulse generated by the pump plunger propagates through the pipe at th e velocity of sound in form of a pressure wave. When computing the phenomen on of wave propagation within high-pressure delivery pipes, the fact that t he flow is both unsteady and turbulent, must be taken into account. As the pipe length is much greater than the pipe diameter, the flow may be conside red single-dimensional. For the computation we apply the theory of hydrauli c impacts within the high-pressure pipes.