ОЦЕНКА МЕТОДОВ ПОДАЧИ СПИРТА В ЦИЛИНДРЫ ДИЗЕЛЬНОГО ДВИГАТЕЛЯ ЭКСПЕРИМЕНТАЛЬНОЙ УСТАНОВКОЙ

Abstract

The main problem of modern internal combustion engines at present is the growing shortage of fuel and the increase in environmental safety requirements. To solve this problem, the authors suggest adding alcohol to diesel fuel. This additive – ethanol or methanol – will help reduce harmful emissions of combustion products into the atmosphere and increase the efficiency of the internal combustion engine in the main operating modes. The method of feeding the mixture into the combustion chamber will have a great effect on the combustion process of the fuel-air mixture with alcohol. There is a large number of ways to supply alcohol to the engine, but their comparative characteristics have not been fully studied yet. To evaluate various methods of introducing alcohol into a diesel engine, an experimental installation including an electric brake balanced machine and a diesel engine has been developed. The installation allows the diesel engine to be loaded to the required torque value and makes it possible to record the main mechanical parameters of the engine. In this study, the authors considered the supply of alcohol in the diesel engine cylinders with two methods: in the form of an emulsion with fuel and with air on the intake stroke (in the intake manifold). The unit will quantify at different engine operating modes and the proportion of alcohol delivered both as an emulsion and with air. The research will help assess the feasibility of using alcohol additives and adjust the theoretical justification of the processes occurring during the combustion of the fuel-alcohol mixture in the cylinder.