Abstract: A water delivery system for delivering demineralized water to a consuming unit of a motor vehicle, in particular to a combustion engine, encompassing: a water tank having a filling opening; a first aspiration line; a first water pump; a discharge line; a discharge apparatus; a demineralization apparatus for demineralizing water; the first water pump being fluidically connected via the first aspiration line to an internal volume of the water tank; the discharge apparatus being fluidically connected via the discharge line to the first water pump.

Abstract: A liquid tank having a tank interior space delimited by a tank wall and fillable with liquid, a withdrawal opening; a retention component that delimits a component interior region in the tank interior space; the component volume of the interior region being less than the tank volume; a partition of the retention component permitting a flow of liquid, out of a component exterior region located outside the interior region but inside the tank volume, through the partition into the interior region and presenting a flow resistance to a flow out of the interior region through the partition into the exterior region, in such a way that the partition exhibits a liquid retention capability with respect to surging movements of liquid in the interior region; the withdrawal opening being arranged in such a way that at least as soon as a level falls below a threshold, the partition is arranged between the withdrawal opening and a liquid quantity received in an exterior region of the tank interior space; the retention compo

Abstract: A liquid tank, in particular for a motor vehicle, encompassing: a tank shell surrounding an internal tank volume; and at least one tank opening for filling the tank as intended with a liquid that is to be stored and/or for removing stored liquid as intended from the tank, the tank further including a float valve that, depending on its operating position, opens or closes for a flow of fluid a valve opening that passes through the tank shell and is different from the at least one tank opening, the tank further including a valve housing, which guides a float valve in its motion between its closed position in which it closes off the valve opening and its open position in which it enables a flow of fluid through the valve opening, is embodied in one piece with the tank shell.