Finite Element Modeling of Fuel Emission for Thermoplastic Multilayer Fuel Tanks with Optimization of Barrier Properties

2006-01-0625

04/03/2006

Event
SAE 2006 World Congress & Exhibition
Authors Abstract
Content
A numerical simulation model for the prediction of fuel hydrocarbon permeation is presented in this work. The barrier layer thickness optimization for thermoplastic multilayer fuel tanks is also considered. The diffusion model is based on the continuum approach with steady-state permeation regime across the multilayer polymeric wall. The hydrocarbon flux through the multilayer wall is determined by assuming continuity in vapor pressure at the polymer-polymer interface. Since the pinch-off zone is known to be the major source of emission per unit area, a method has been developed to automatically detect this zone at the end of extrusion blow molding process. After then, an improvement to the diffusion model has been proposed in order to evaluate adequately the hydrocarbon permeation through this specific area. Finally, a gradient-based algorithm is applied to optimize the barrier layer thickness to satisfy the total hydrocarbon fuel emission constraint for a plastic fuel tank (PFT).
Meta TagsDetails
DOI
https://doi.org/10.4271/2006-01-0625
Pages
9
Citation
Benrabah, Z., Thibault, F., and DiRaddo, R., "Finite Element Modeling of Fuel Emission for Thermoplastic Multilayer Fuel Tanks with Optimization of Barrier Properties," SAE Technical Paper 2006-01-0625, 2006, https://doi.org/10.4271/2006-01-0625.
Additional Details
Publisher
Published
Apr 3, 2006
Product Code
2006-01-0625
Content Type
Technical Paper
Language
English