Patent attributes
The present invention discloses an operating fluid container (10) made of thermoplastic material for a motor vehicle and a method for equipping an operating fluid container with a stiffening element (20). The operating fluid container (10) here has the following features:the operating fluid container (10) has a container opening (12) which is arranged in a container upper shell (11) and is edged by a surround (13);the operating fluid container (10) comprises a tubular stiffening element (20) arranged in the operating fluid container (10);on the end, the stiffening element (20) has a circumferential connecting edge (21) in contact with the container upper shell (11);in a plan view onto the container upper shell (11), the container opening (12) is surrounded by the connecting edge (21);the stiffening element (20) is integrally connected to a container lower shell (14) and by means of the connecting edge (21) to the container upper shell (11); andthe stiffening element (20) counteracts deformation caused by the internal pressure of the operating fluid container (10).