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자료유형
학술저널
저자정보
저널정보
한국자동차공학회 한국자동차공학회논문집 자동차공학회논문집 제5권 제4호
발행연도
1997.7
수록면
130 - 141 (12page)

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Work on the reduction of particulate matter(PM) from a diesel vehicle has led to a new trap system and a control method to control the combustion rate of the PM filtrated in the trap, which was named as 'Active Exhaust Feeding Regeneration(AEFR) System' by its operation mechanism. Ceramic cordierite filter is a major component of the trap and susceptible to thermal shock. Therefore the system should be designed to reduce the peak temperature and temperature gradients in the trap; these have been considered to be the main factors causing thermal shock of the filter during the regeneration. It uses the engine's exhaust gas partially for the regeneration of the ceramic filter. It controlled bypass flow rate of the engine's exhaust gas precisely to control the temperature of the gas entrained into the filter. Gas temperatures were measured inside filter, and the oxygen concentration at the outlet of the filter was also monitored during the regeneration to analyze the combustion process of the PM. The temperature distributions and temperature gradients in the filter during the reg,eneration varied widely according to the regeneration control schemes. Finally, this system shows relatively low peak temperature and temperature gradients in the filter during its regeneration. It is considered that this system uses a new method to control the combustion rate of the PM, which is different from the methods used in the previous studies.

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ABSTRACT

1.서론

2.재생시 발생하는 온도특성에 대한 고찰

3.실험장치 및 방법

4.결과 및 토론

5.결론

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