Modeling Needle Motion Influence on Nozzle Flow in High Pressure Injection System

2007-01-0250

04/16/2007

Event
SAE World Congress & Exhibition
Authors Abstract
Content
This paper deals with the numerical investigation of a Diesel engine high pressure DI system in which the influence of needle motion characteristics on the internal injector flows is evaluated; a radial perturbation of the axial needle motion has been imposed to analyze its role over the nozzle flow features. The developed model is based on the coupling of two computational tools. With the former one, AMESim code, the injector has been modeled; the results obtained from the injector simulation, in terms of injection needle lift time evolution, have been used to initialize the latter computation tool, FIRE code, in which 3D flow numerical investigation of the internal injector flows has been performed. Details of the adopted modeling strategy are presented and the results of each simulation step are shown.
Meta TagsDetails
DOI
https://doi.org/10.4271/2007-01-0250
Pages
13
Citation
Chiavola, O., and Palmieri, F., "Modeling Needle Motion Influence on Nozzle Flow in High Pressure Injection System," SAE Technical Paper 2007-01-0250, 2007, https://doi.org/10.4271/2007-01-0250.
Additional Details
Publisher
Published
Apr 16, 2007
Product Code
2007-01-0250
Content Type
Technical Paper
Language
English