Gumenchuk M. Definition of rational parameters of submission of air in a diesel engine with turboharger

Dissertation work is devoted to research of influence of pressure of pressurisation on the external high-speed characteristic of a diesel engine for improvement of power, fuel-economic parameters and reduction smoke fulfilled gases. The analysis of ways of improvement of parameters of the external high-speed characteristic is carried out. One of ways is the improvement of parameters turbocharger by application of the regulated pressurization. The most suitable way of regulation this internal regulation by change of the area of section of the directing device without blades of the turbine. The dynamic mathematical model of a diesel with turbocharger is specified. Using a method of comparison of the experimental and settlement characteristics TKR parameter of efficiency of the pulse turbine is determined. The settlement researches on computer of influence of change of the area of section of the directing device of the turbine on the external high-speed characteristic of a diesel engine are carried out. Is established what to reduce the area of section of the directing device follows on 10%… 30 % and in a range of frequencies 1000 … 1600 min-1. The developed research devices for an experimental research of influence of pressure of pressurization on the external high-speed characteristic. The experimental researches were carried out on a diesel SMD-23.07 with turbocharger established on the brake stand and equipped measuring and recording equipment. The results of motor researches specify, that the change of the area of section of the directing device of the turbine is effectual measures for a raising of pressure the compressor TKR and the improvement occurs in a zone of frequencies 1000 … 1600 min-1. Key words: a diesel engine, gas turbine pressurization, supercharger, regulation, mathematical model, fuel submission, air supplying.