Abstract
This paper verified the relationship between the cell density of three types of substrates with different cell densities (400cpsi, 600cpsi, 900cpsi) and light-off factor (LOF). The results tested on engine bench demonstrated that, higher cell density of substrate could improve the light-off performance characteristics of catalysts. The effect of increasing cell density of substrate on air-fuel ratio characteristic of catalyst. It was effective measurement that higher cell density enlarged the operating window of catalyst.
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