Media line system for conveying at least one medium in an exhaust gas aftertreatment system, branching device for such and motor vehicle with at least one

摘要

In a media line system (100) of an exhaust gas aftertreatment system (1) for conveying at least one medium (7), such as an additive, in the exhaust gas aftertreatment system (1), comprising at least two metering devices (2, 3) for metering medium (7), at least one Pump device (5) for conveying the medium (7) to the at least two metering devices (2, 3) and / or for sucking back the medium (7) from the at least two metering devices (2, 3) and at least one branch device (4) between at least a medium tank (6) and / or the at least one pump device (5) and metering devices (2, 3), the at least one branch device (4) via media lines (10, 11, 12) of the media line system (100) with the at least two metering devices (2, 3) and the at least one medium tank (6) and / or the at least one pump device (5) is connectable or connected, at least one shut-off device (9, 90, 93, 94, 96) is provided for closing the V Connection between branch device (4) and at least one of the metering devices (2, 3) after the medium (7) has been sucked back.