Conveyor system for conveying aqueous urea solution from storage tank to injector in motor vehicle, has storage subjected with pressure of pump and having volume allowing for emptying conveyor line

摘要

The system has a conveyor line (3) with one end connected with a storage (11) and another end connected with a vent valve (9) closed during operation of a pump (2) e.g. piston pump such as inline piston pump, and opened when the pump is disconnected. The storage is subjected with pressure of the pump and has a volume that allows for emptying the conveyor line. The storage is arranged at an injector (5) and filled with compressed air by the operation of the pump. The vent valve is arranged within a storage tank (1), and the conveyor line has a section (8) downwardly bent to the vent valve.