Container i.e. oil tank, for retaining oil of motor car, has wall surrounding volume of container to retain operating liquid and formed as dimensionally stable wall, and maintaining device for maintaining volume during container deformation

摘要

The container (10) has a wall (12) surrounding a volume (14) of the container for retaining operating liquid, where the wall is formed as a dimensionally stable wall and made of metal e.g. aluminium and steel. A maintaining device maintains the volume of the container during deformation of the container and has a curvature (16) directed inwards to the volume of the container, where the curvature bumps outward for maintaining the volume of the container during deformation of the container. The curvature automatically maintains the wall in the bumped out state.