Internal combustion engine exhaust gas feedback arrangement has delivery device in form of a flow or displacement pump, dosing device in form of on-off valve switched by control device

摘要

The arrangement consists of an exhaust gas line, a delivery device (5) in the form of a flow or displacement pump (7) and a dosing device (6) in the form of an on-off valve (8), whereby the pump and valve are switched on and off depending on a control device (9). The pump is driven by the engine and can be switched off via a coupling.