Abstract
In an engine transient condition, effects of different exhaust mass flows, inlet signal amplitudes and periods on dynamic responses of the three-way catalytic converter were investigated experimentally. Experimental results show that exhaust mass flows, inlet signal amplitudes and periods have important influence on engine emissions and oxygen storage capacity of Ceria for the three-way catalytic converter with CeO2 catalyst in the washcoat. With the increase of the exhaust mass flow, the lambda outlet signal increases nonlinearly; emissions are better at the beginning and then turns deteriorated in the case of a high mass flow after the lean-rich transition. Outlet lambda increases almost linearly with the increase of exhaust mass flows and lambda outlet signal amplitudes after the richlean transition.
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