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Dynamic behavior of three-way

Although time-averaged conversion measurements provide valuable information, a detailed analysis of the dynamic behavior of three-way catalysts requires direct observation of catalyst responses to rapid changes in exhaust composition. [Pg.62]

Figure 7. Schematic diagram of the apparatus used to study the dynamic behavior of three-way catalysts in engine exhaust (14, 15j. This apparatus was used to make the measurements shown in Figures 8 and 9. Figure 7. Schematic diagram of the apparatus used to study the dynamic behavior of three-way catalysts in engine exhaust (14, 15j. This apparatus was used to make the measurements shown in Figures 8 and 9.
The studies described in the preceding two sections have identified several processes that affect the dynamic behavior of three-way catalysts. Further studies are required to identify all of the chemical and physical processes that influence the behavior of these catalysts under cycled air-fuel ratio conditions. The approaches used in future studies should include (1) direct measurement of dynamic responses, (2) mathematical analysis of experimental data, and (3) formulation and validation of mathematical models of dynamic converter operation. [Pg.74]

One of the goals of an analysis of three-way dynamic behavior is to predict outlet concentrations given rapidly varying inlet concentrations, such as those shown in Figure 8. The analysis is made easier, however, when the dynamic conditions are simplified to step changes and single frequency, constant amplitude oscillations in air-fuel ratio. Figure 9A shows CO... [Pg.67]

DYNAMIC BEHAVIOR OF AUTOMOTIVE THREE-WAY EMISSION CONTROL SYSTEMS... [Pg.427]

Dynamic Behavior of Automotive Three-Way Emission Control Systems",... [Pg.506]

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Dynamic behavior

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