Kondaurov E. A heightening of effectiveness of cooling systems of locomotive by usage of an improved hydraulic drive of a ventilator

The thesis is dedicated to a heightening of effectiveness of process of regulating of cooling systems of heat transfer mediums locomotives. The adequate mathematical models of a hydraulic drive of a ventilator, its devices and systems, are designed. Usage of a volumetric method of regulating for a drive of a ventilator of cooling systems of locomotives is justified. The mathematical model of hydraulic lines is adapted to operation conditions of cooling systems of locomotives. The relations of performances of beatings of pressure in hydraulic lines from design parameters of a drive are established, the falling Efficiency is defined. On the basis of a numerical modeling the stability region of a regulating system of temperature of heat transfer mediums is defined, the response functions for a transient period and magnitude of overshoot are obtained, which one have allowed to place optimum settings of regulators. Keywords: locomotive, cooling system, hydraulic drive of a ventilator, mathematical simulation, regulating system, step response.