METHOD FOR OPERATING A METERING APPARATUS

摘要

The invention relates to a method for operating a metering apparatus (1) for reducing agent having at least one movable pump element (2) which can be moved between an upper reversal point (4) and a lower reversal point (5) in order to convey reducing agent into an exhaust-gas treatment component (3), and at least one position encoder (6), by way of which a cycle of the movable pump element (2) can be determined. In the method, first of all a position of the at least one movable pump element (2) is determined by way of the at least one position encoder (6). Subsequently, the at least one movable pump element (2) is moved and reducing agent is metered into the exhaust-gas treatment component (3). Thereupon, a second determination of a position of the movable pump element (2) takes place by way of the at least one position encoder (6), and subsequently a first quantity (7) of reducing agent which is metered between step a) and step d) is determined.