Patent ID: 8459300

Claim:
An arrangement for feeding a liquid additive from a receptacle into one of a fuel line and an exhaust pipe of an internal-combustion engine of a motor vehicle via a blockable feed line leading into said one of the fuel line and the exhaust pipe, the receptacle being fillable via a blockable connection line with additive from a larger storage tank accommodated in the motor vehicle, wherein the blockable feed line and blockable connection line are blockable via shut-off valves, the arrangement comprising: a pump operatively configured to at least temporarily generate a feed pressure in the feed line; wherein the feed line branches-off the connection line between the receptacle and the storage tank; wherein the pump is installed in one of the receptacle and at a location between the receptacle and the branching-off of the feed line from the connection line; wherein the connection line is blockable in one of the storage tank and at a location between the storage tank and the branching-off of the feed line; and a blockable return line which branches-off from the connection line at a location between the pump and the shut-off valves.