Metering device of internal combustion engine mounted in diesel vehicle, comprises pressure transmitter that includes two volumes spatially separated from each other by membrane

摘要

The device (1) comprises an injection unit that is adapted to inject a urea solution under pressure into an exhaust stream of an internal combustion engine. A pressure transmitter (10) is adapted to transmit the necessary injection pressure of a working medium to the urea solution. The pressure transmitter includes two volumes (12,14) that are spatially separated from each other by a membrane (16). A control valve (20) is adapted to control an inflow and an outflow of the medium in the volumes.