The present paper describes some Finite Elements simulations carried out in order to investigate the contact problem in the sealing region of a direct fuel injector. In particular two different design solutions have been analyzed, both patent pending, one characterized by a conformal contact of two conic surfaces and the other one by a non-conformal contact between a cone and a sphere. Pressure distribution, contact width and von Mises equivalent stress have been calculated and employed as comparison parameters. Two different loading conditions have been considered: nominal loads and nominal loads plus undesired effects. Also deviations from the nominal geometry, obtained from profile detection of 40 samples, have been introduced for considering a real-like case. Numerical results stress the robustness of the non-conformal solution with respect to geometrical tolerances and real loading conditions.
|Autori:||F. DI PUCCIO; CIULLI E; R. SQUARCINI|
|Titolo:||Comparison of two sealing coupling geometries for a direct fuel injector|
|Anno del prodotto:||2006|
|Digital Object Identifier (DOI):||10.1016/j.triboint.2005.07.007|
|Appare nelle tipologie:||1.1 Articolo in rivista|