an arm fastened to a cap of the surge chamber. The fuel pump is preloaded against the sealing ring by the arm. The ejector is supplied with fuel by the fuel pump and induces the fuel from the fuel tank through an opening. The ejector is integrated in a housing of the fuel pump.
The known fuel pump and ejector combination represents a component of very complex design. In addition, the ejector makes maintenance work on the fuel pump more difficult.
An object of the present invention is to provide a delivery unit for insertion in a surge chamber of a motor vehicle fuel tank that has a simplified assembly and fitting.
The object is met according to the present invention by configuring the ejector as a structural unit with theof metal.
The fitting of the delivery unit according to the present invention may comprise a snap-in connection to connect the fuel pump to the pump holder which is fastened onto the floor of the surge chamber. The snap-in connection obviates the need to preload the fuel pump by an arm supported on the cap of the surge chamber.
The fuel pump is reliably held in its specified position if the pump holder exhibits a peripheral rim surrounding a lower region of the fuel pump and the snap-in connection exhibits a protrusion which extends radially inward proximate the free end of the rim.
The fitting and removal of the delivery unit according to the present invention is further simplified if a connection of the pump holder to the floor of the