Method for detecting a functional state of an ionizer in an air filtering system

Abstract

A method for detecting a functional state of an ionizer in an air filtering system is provided, in particular for a motor vehicle, in which a measurement apparatus determines the amperage at a discharge electrode in the ionizer at an initial point in time t0, and sends this to a computer, the measurement apparatus measures at least one other parameter at the time t0 and sends this to the computer, the measurement apparatus measures the amperage at the discharge electrode and the at least one other parameter at a subsequent time t1 and sends the results to the computer, the computer obtains at least one comparison value from the measurement values detected by the measurement apparatus at the initial time t0 and the subsequent time t1 and compares this with a reference value, the computer generates a signal and/or takes appropriate measures if the comparison value differs from the reference value by a predefined value. A lasting filtering effect is obtained therewith, even with worn filters.

Dependencies are inferred from the claim text.