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초록· 키워드

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A prior fundamental study was executed using a constant volume chamber (CVC) to improve the burning characteristics of lean pre-mixture by the injection of active radicals generated in the sub-chamber of the CVC. The Radical ignition (RI) technique shows remarkable progress in the burning velocity and combustible lean limit compared with the results of the spark ignition (SI) technique. The optimum design value of the sub-chamber geometry is near 0.11 ㎝?1 for the ratio of the total area of the holes to the sub-chamber volume (A<SUB>h</SUB>/V<SUB>s</SUB>). In this study, based on the former experimental results, the additional works have been performed to examine the effects of the geometry change in the number (N<SUB>h</SUB>), the total section area (A<SUB>h</SUB>), and diameter (D<SUB>h</SUB>) of the passage holes on the combustion characteristics in the CVC. Also ambient conditions such as the initial temperature and the initial pressure of the mixture were selected as experimental parameters and the effects of residual gas at the chamber on the combustion characteristics were investigated. As a result, the correlation between the passage hole number and overall passage hole area was grasped. The effects of the initial temperature were significant, but on the other hand, those of the initial pressure were weak. A more detailed analysis on the residual gas is required in the future.

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ABSTRACT
1. INTRODUCTION
2. EXPERIMENTAL APPARATUS AND CONDITIONS
3. RESULTS AND DISCUSSION
4. CONCLUSIONS
ACKNOWLEDGEMENT
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2009-556-016684568