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초록· 키워드

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An experimental study was carried out to obtain the fundamental data about the effect of sub-chamber on pre-mixture combustion. A CVC (constant volume combustor) divided into a sub-chamber and a main chamber was used in this experiment. The volume of the sub-chamber was varid from 0.45% to 1.4% about the whole combustion chamber. The sub-chamber has twelve narrow radial passage holes and a spark plug to ignite the pre-mixture. As the ignition occurs in the sub-chamber by a spark discharge, burned and unburned gas including a great number of radicals is injected into the main chamber, then the multi-point ignition occurs in the main chamber. The combustion pressure is measured to calculate the burning velocity mainly as a function of the sub-chamber volume, the diameter of the passage holes, and the equivalence ratio. In the case of RI (radical ignition) methods, the overall burning time became very short and the maximum burning pressure was slightly increased as compared with that of SI (spark ignition) method. The optimum design value of the sub-chamber is near 0.11 ㎝-¹ in the ratio of total area of holes to the sub-chamber volume.

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ABSTRACT

1. INTRODUCTION

2. EXPERIMENTAL APPARATUS AND METHOD

3. EXPERIMENTAL RESULTS

4. CONCLUSIONS

ACKNOWLEDGEMENT

REFERENCES

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UCI(KEPA) : I410-ECN-0101-2009-556-015244744