Motor vehicle engine bonnet with injury-reducing facilities during collision with pedestrians has synthetic foam coating with front section of lower rigidity, rear section of higher rigidity, to simulate impact of child's and adult's head

摘要

The bonnet (6) is constructed to have a certain delay profile corresponding to a rigidity of the bonnet on a point of impact of a head, for which an HIC value can be calculated. The front section (10) of the bonnet has lower rigidity than the rear section (11). Front rigidity corresponds to a simulated impact of a child's head, rear rigidity corresponds to a simulated impact of an adult's head. The bonnet has a layer of synthetic foam defining the different degrees of rigidity, it has a non-flexible structure, and collapses above a set load, to retain its deformation.