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Non-thermal plasma technology has many applications in various areas. One of the applications is regenerating diesel particulate filter (DPF). DPF is a widely applied device to control the particulate emission of diesel engines. However, clogging of the DPF occurs after hours of operation resulting in reduced engine efficiency. In order to solve this problem carbon soot collected inside the DPF should be cleaned out periodically. Conventional high-temperature removal processes easily leads to the breakage of DPF. Herein, low-temperature plasma formed in a dielectric-barrier discharge(DBD) reactor was used to form active oxidants such as ozone and monatomic oxygen. Two types of plasma reactors: surface DBD and volume DBD were studied. Experimentally, the effects of discharge power and frequency on the performance of DBD reactors were studied. It has found that design of surface DBD used in this study is much more efficient than volume DBD. Regeneration of the DPF was carried out with oxygen flow rate 3.5 L/min; with applied discharge power 19 W using volume DBD. It could remove 2.1g of carbon soot after a continuous regeneration for 2.5 hrs.

목차

Abstract
1. INTRODUCTION
2. EXPERIMENTAL
3. RESULTS AND DISCUSSION
4. CONCLUSION
Acknowledgement
References

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UCI(KEPA) : I410-ECN-0101-2009-556-017551800