Verfahren zur Bestimmung der NOx-Konzentration

摘要

The invention relates to a method for determining NOx concentration in a gas, whereby a thick-layer measuring sensor with two measuring cells is used. The raw measuring value of the measuring sensor (1) is corrected by a multiplicative correction value and an additive correction value which are both taken from a set of characteristics that are determined at least as a function of the oxygen ion pump flow (Ip1) in the second measuring cell (8) and which are dependent on measuring gas temperature and sensor temperature.