Fuel filler device for tank of motor car, has misfuelling protection device that is adjusted reversibly or bistably by manual operation or automatically in two different protection modes, based on diameter of filling unit

摘要

The fuel filler device (1) has a tank connection piece (2) associated with misfuelling protection device (3). The misfuelling protection device prevents insertion of a filling unit into the tank connection piece, when the diameter of the filling unit is less than a certain minimum diameter. The misfuelling protection device is adjusted reversibly or bistably by manual operation or automatically in two different protection modes, based on the diameter of the filling unit.