Diesel Injector Fuel Injector 0445120170 Bosch for Weichai Wd10 Engine

Abstract.

The article proposes an assessment option for analysing the quality of fuel injection by the injector constituting the development of calculation blocks in a common injector model within LMS Imagine.Lab AMESim. The parameters of the injector model in the article correspond to the serial injector Common Rail-type with solenoid. The possibilities of this approach are demonstrated with providing the results using the example of modelling the modified injector. Following the research results, the advantages of the proposed approach to analysing assessing the fuel injection quality were detected.
1.Introduction
The injection performance and fuel atomization depend on the injector design: geometric characteristics of atomized fuel jets, fuel spray structure, fuel atomization fineness, and a number of other parameters of the fuel delivery process [1, 2]. To ensure high-efficiency combustion of fuel and, consequently, obtain high technical and economic indicators of the diesel engine, it is necessary to organize a rational injection.

The quality of fuel atomization is characterized by its fineness and uniformity. The process of jet disintegration shall be organized so as to obtain high quality of spraying at all stages of injection, including the initial and the final stage, when there is a low fuel pressure upstream the injector. Presently, three-dimensional modelling of fuel delivery units and systems of diesel engines is being actively employed [3]. However, three-dimensional calculaiton is a complex and labor-consuming task. Therefore, its application in the calculation of injectors is limited to and concentrated on the analysis of fuel atomization and spray geometry.

In some researches, a rapid evaluation of fuel delivery characteristics is required, as well as a study of the dynamics and qualitative characteristics of fuel atomization, for example, to verify or compare different types of injectors. In solving some tasks of estimating the compared options by their quality of fuel atomization, flow diagrams are not always possible to be used.