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To reduce the carbon particle emission from diesel exhaust, CPF is commonly used for light duty application. The accumulated soot mass could be estimated by analyzing the pressure drop through the CPE Therefore, the pressure drop of clean CPF is the principal information which needs to calculate the pressure drop by soot accumulation. In this study, the pressure drop model based on Darcy's law was simplified to calculate the clean CPF pressure drop as 2<SUP>nd</SUP> order equation by exhaust volume flow rate. The model coefficients for each order term were tuned by steady operating condition analysis as al=661 [10³/L], a2=133[10¹²/L]. The reliability of model was tested with vehicle driving conditions to analyze the behavior of model calculation. The mild and rapid acceleration mode, 0 to 120kph, were used to compare the result of pressure drop model with measured pressure drop through CPE The model showed the accurate result compared with measured pressure drop in steady and mild acceleration mode. The uncertainty of exhaust volume flow rate and temperature was reflected in the deterioration of accuracy at rapid acceleration mode.

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Abstract
1. 서론
2. 실험 방법
3. 실험 결과
4. 결론
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UCI(KEPA) : I410-ECN-0101-2009-556-015697998