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Analysis of Transient Thermal and Conversion Characteristics of Catalytic Converters During Warm-Up
Technical Paper
958076
Sector:
Event:
JSAE Spring Conference
Language:
Japanese
Abstract
Numerical simulation was used to analyze transient thermal and conversion characteristics of catalytic converters during warm-up. As a result, the following fact was shown and verified by experiment. There is great maldistribution of species inside catalytic converters because catalytic wall temperature is higher in the central axis region during warm-up. CO and THC concentrations are low in the exhaust gas passing through inner region cells. On the other hand, they are high in the exhaust gas passing through outer region cells because CO and THC are not converted due to low wall temperature.