| 摘要 |
The invention relates to a metering system for introducing a reducing agent, in particular an aqueous urea solution, into an exhaust conduit (4) of an internal combustion engine (1), the metering system having a reducing agent tank (19) that is connected to a spray pipe (5) via at least one metering means pump (15), an air pump (7) also being provided for generating compressed air, and the reducing agent being introduced with the support of compressed air. A device is provided for introducing a reducing agent into an exhaust conduit (4), that is characterised by a simple design. This is achieved by the fact that the metering means pump (15) is actuated by compressed air, and that the air pump (7) is a central compressed air source for providing compressed air for introducing the reducing agent with the support of compressed air and for actuating the metering means pump (15) with compressed air. |
