METHOD FOR MONITORING CATALYTIC PERFORMANCE OF RECOMBINER

摘要

PROBLEM TO BE SOLVED: To know performance deterioration of a recombining catalyst before a hydrogen concentration rises at the outflow port of an exhaust gas recombiner to predict the timing required for the replacement of the recombining catalyst.

SOLUTION: A method includes: disposing a temperature sensor inside a recombining catalyst contained in an exhaust gas recombiner; comparing temperature measured by the sensor with a temperature predicted from the flow-rate and hydrogen concentration of an exhaust gas flowing in the recombiner or with an exhaust gas temperature measured at an outflow port; monitoring an indication of deterioration of a catalytic performance before the performance of the entire recombining catalyst is deteriorated and the hydrogen flows downstream; and predicting timing required for the replacement of the recombining catalyst and using a time elapsed until detecting an indication of the deterioration of the catalytic performance.

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