Optimization of the critical parameters affecting the fuel lid performance
To be published on November 21, 2019 by SAE International in United States
Event: NuGen Summit
Fuel lid is one of the parts which are mostly operated mechanically by the end user while filling the fuel. Therefore part design should be done in such a manner that it can be operated smoothly without any hassles. The conventional steel fuel filler doors are of two types: Three-piece type fuel filler doors also known as the dog-leg type and two-piece type fuel filler doors also known as the butterfly type. Both types of fuel filler doors have a pin that acts as a rotational hinge axis about which the fuel filler door opens and closes. Depending on the styling and shape of the side body outer, fuel lid type is decided. In the current study, dog-leg type fuel lid is considered. The factors that primarily affect the opening-closing performance are the weight of fuel lid, hinge axis, and the friction at the hinge area. The orientation of the hinge axis is derived from the profile of the side body outer panel. The fuel lid weight and hinge axis are decided in the initial design stage. Therefore the variable parameter is friction at the hinge area. The aim of this paper is to focus on the optimization of the hinge friction and determination of minimum spring force that a spring must exert to open the fuel lid. By optimizing the friction value, fuel lid can be operated smoothly and the optimal value of the spring force governs the durability of the fuel lid.