Diesel Injector Fuel Injector 0445120187 Bosch for Dodge RAM Truck Cummins 6.7L

Developing the Model of Fuel Injection Process Efficiency Analysis for Injector for Diesel Engines （part 3）

As one of the tools for assessing the fuel atomization quality based on modeling the dynamics of atomizers, the distribution of the cycle dose over the pressure spectrum upstream the atomization orifices is used. Due to such a tool we are capable of qualitatively assessing the process of fuel injection into the CC. By knowing the pressure at which the fuel dose is injected, we can assess the atomization quality. Also, another advantage of this tool is the possibility of performing a detailed analysis of the fuel delivery process and its features, deriving the effect caused on it by particular parameters of the fuel delivery system elements. The tool model in the LMS Imagine.Lab AMESim [4, 5] software package is represented in fig. 1.

If it is necessary to assess the process of injection according to the criteria for the emergence of the fuel ignition conditions in the combustion chamber, it is possible to use the incremental time-volume diagrams for the cycle doses atomized at the pressures of the assigned spectral ranges. When using the same modelling block, this tool is able to demonstrate the pressure, time, and portion of fuel, which is injected to the CC. The obtained dependence is also able to show the nature of ignition, since the pressure at which a portion of fuel enters the cylinder at the time of the injection beginning, is very important.

2.1 Changes in the mean pressure values upstream the orifices in the injector atomizer To study the various fuel atomization processes, it is necessary to obtain the numbers or integral components serving as the basis for an assessment, as well as an analysis of the regularities of various parameters. Therefore a tool was developed within the LMS Imagine.Lab AMESim package allowing to study change of the mean pressure value upstream the orifices in the injector atomizer.