Method for measuring catalytic reactivity in diagnosing a gas-permeable object, and apparatus therefor

Method and apparatus for measuring catalytic reactivity in diagnosing a gas-permeable object, such as a catalyst or a filter, that has been removed from an exhaust gas tract connected downstream of an internal combustion engine of, motor vehicle. The method includes applying, through an opening in a...

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Bibliographische Detailangaben
1. Verfasser:	Mayer, Hanspeter
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MEASURING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS SEPARATION STEAM ENGINES TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	Method and apparatus for measuring catalytic reactivity in diagnosing a gas-permeable object, such as a catalyst or a filter, that has been removed from an exhaust gas tract connected downstream of an internal combustion engine of, motor vehicle. The method includes applying, through an opening in a device, a test medium with a defined composition, to a front face of the removed object; and measuring, at a position located, with respect to a flow direction of the test medium, downstream of the front face, at least of: a concentration of at least one reduced or oxidized constituent of the test medium after passage of the test medium through the gas-permeable object; and a temperature of the object after the test medium is applied to the gas-permeable object.