Abstract: The present invention includes a device that comprises a suction jet pump, that is arranged in a reservoir pot and has a nozzle and a mixing duct provided downstream the nozzle and arranged perpendicular to a pot base of the reservoir pot. The outlet of the mixing duct has a deflection means, which the jet of the nozzle impinges when the mixing duct is unfilled and has an additional volume formed at the outlet of the mixer by an offset widening of the mixer duct. This additional volume prevents the column of liquid in the mixing duct from being forced out by the propulsion jet of the suction jet pump. Thus the lead time of the suction jet pump is approximately equal in all operating states.

Abstract: Devices for delivering fuel are already known, comprising a suction jet pump that is arranged in a storage crucible and has a nozzle and a mixer duct provided downstream of the nozzle and arranged perpendicular to the bottom of the storage crucible, wherein at the outlet of the mixer duct an impingement means is arranged, against which the jet of the nozzle impinges in the substantially unfilled mixer duct, and in doing so is at least partially returned into the mixer duct. It has been found that despite the impingement means the propulsive jet tends to eject the liquid column present in the mixer duct. As soon as the liquid level in the storage crucible has decreased below the outlet of the mixer duct, no more fuel can replenish from above into the mixer duct so that the mixer duct may be unfilled after switching off the suction jet pump.

Abstract: The fuel supply apparatus according to the invention is improved in a simple manner in that it is provided with short fuel lines. According to the invention, the drive line of the suction jet pumps is connected to a pressure line downstream of the fuel supply pump and has at least one check valve or a siphon.

Abstract: Known apparatuses for pumping fuel have at least two suction jet pumps, which each have one drive nozzle and one collection conduit and mixing conduit located downstream of the drive nozzle. A disadvantage is that the parallel suction jet pumps require a large amount of installation space, are embodied very massively, and therefore require a large amount of injection-molding compound for their manufacture. In the apparatus of the invention, the production costs and the required installation space for the suction jet pumps are reduced. According to the invention, the drive nozzles are surrounded by a single collection conduit, narrowing conically in the flow direction and located upstream of the mixing conduits.

Abstract: Known apparatuses for pumping fuel have at least two suction jet pumps, which each have one drive nozzle and one collection conduit and mixing conduit located downstream of the drive nozzle. A disadvantage is that the parallel suction jet pumps require a large amount of installation space, are embodied very massively, and therefore require a large amount of injection-molding compound for their manufacture. In the apparatus of the invention, the production costs and the required installation space for the suction jet pumps are reduced. According to the invention, the drive nozzles are surrounded by a single collection conduit, narrowing conically in the flow direction and located upstream of the mixing conduits.

Abstract: The fuel supply apparatus according to the invention is improved in a simple manner in that it is provided with short fuel lines. According to the invention, the drive line of the suction jet pumps is connected to a pressure line downstream of the fuel supply pump and has at least one check valve or a siphon.

Abstract: A suction jet nozzle and a diffuser having an inflow cone with an elliptical cross-section is implemented in a suction jet pump to be used in a motor vehicle's fuel tank. The jet nozzle is configured to produce a flat propulsion jet that seals the diffuser over its entire circumference.