Vitesco Technologies Gmbh

Tobias Luebbert

Peter Bauer

Cornelius Köhler

Youness Idar

Jan Hodgson

Cornelius KÖHLER

A conveying device for an aqueous urea solution in a motor vehicle, with a tank, with a filter element and with a pump. The aqueous urea solution can be conveyed by the pump from the tank through the filter element into a suction line, wherein the filter element has a filter material and a frame for receiving the filter material, wherein the filter material is connected to the frame by a connection element, wherein the connection element is part of the fluid conveying path from the tank via the filter element to the pump.

Conveying device with filter element

A fluid-conveying device for conveying a fluid, such as in particular water, from a tank. The fluid can be conveyed along a dosing line to an injection point by a pump, wherein the dosing line is attached at a pressure side of the pump by a connection plug which is attached to an outlet line. The fluid-conveying device has at least one first valve, which is preloaded by a spring and which is configured to prevent a fluid flow from the dosing line to the outlet line and which is furthermore configured to permit the fluid flow from the outlet line to the dosing line if a predefined minimum pressure p1 is reached on that side of the first valve which faces toward the outlet opening.

Fluid-conveying device with valves for controlling the fluid flow

A method for operating a conveying device for an aqueous urea solution in a motor vehicle, having a pump for conveying the aqueous urea solution, wherein the aqueous urea solution is conveyed from a tank along a pressure line to an injector, wherein the injector is arranged on an exhaust gas line and is designed to inject the aqueous urea solution into the exhaust gas line. The conveying speed of the pump is controlled depending on the opening operations and closing operations of the injector and/or the pressure conditions resulting therefrom in the conveying section between the pump and the injector.

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Cologne, Germany

Tobias Luebbert