Deactivation of three-way catalytic converters and selected methods for investigating their efficiency

The paper presents operating conditions and basic processes involved in the deactivation of three-way catalytic converters of exhaust gases. The methods of diagnosing three-way catalytic converters are characterised taking into account their differentiation into three groups. The research stand for catalytic converter tests is described. The results of investigations into the conversion of harmful components of exhaust gases are given in a graphic form. The catalytic converters experimented on are platinum-rhodium and palladium-rhodium, both new and aged ones.

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