ERMITTLUNG EINER REAKTIONSZONE IN EINEM KATALYSATOR

摘要

The invention concerns a method of determining the location of the reaction zone (1) in the interior (3) of a catalytic converter (2) through which a fluid flows which contains components which can react by an exothermic catalysed reaction. The reaction zone (1) is defined as the part of the interior (3) in which the reaction mainly takes place. Its location is determined by measuring the temperature distribution over a measurement path (6) on a wall (5) of the catalytic converter, which extends approximately parallel to the direction of flow (4) of the fluid. The reaction zone (1) is given by the section of the measurement path (6) in which the temperature differs from the maximum value along the measurement path by less than a predetermined amount. The invention represents a particularly simple way of obtaining information on the ageing or poisoning of a catalyst which in normal use does not yet exhibit any perceptible deterioration in performance.