DEVICE FOR METERING A UREA SOLUTION DEVOID OF ENZYMES, COMPRISING A SENSOR UNIT FOR CONTROLLING PHYSICAL CONDITION VARIABLES OF SAID UREA SOLUTION

摘要

The invention relates to a device for metering urea solutions, which allows in particular the level of nitrogen oxide in the exhaust gas stream of an internal combustion engine to be reduced in a reliable manner. According to the invention, in order to meter the urea solution, the device comprises a sensor unit (1) for controlling one or several physical condition variables of a urea solution that is devoid of enzymes.