| A STUDY ON EXPANDABILITY OF THE FLAME KERNEL AND THE COLDFLAME OF THE IGNITION SYSTEM BY THE APPLICATION OF AIS TECHNOLOGY IN LEAN-BURN CONDITION |
| Munseok Choe1,2, Kwonse Kim3, Kyungtae Lee3, Dooseuk Choi2 |
1Yeungnam University College
2Kongju National University
3Korea International University in Fergana |
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| ABSTRACT |
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The main objective of this thesis is to propose a method to overcome a limitation of combustion in lean-burn condition by applying the Amplified Ignition Source (AIS). In order to analyze the combustion efficiency, Constant volume combustion chamber (CVCC) was designed to conduct experiments such as flame visualization, combustion pressure and flame kernel. As the experimental and analysis conditions, Ignition device were applied to two models, C_type plug and J_type plug, and conducted the analysis and experiment with parameters of compressed pressure and air/fuel ratio. Experimental results showed that as the air/fuel ratio increased, the efficiency of C_type decreased, resulting in large combustion delay in the air/fuel ratio 1.4 area, and a misfire occurred without burning in the 1.6 area. However, in case of J_type, combustion occurred smoothly up to air/fuel ratio 1.6, and the combustion pressure was also higher than that of C_Type. In addition, In the case of coldflame expansion, J_Type was doubled at air/fuel ratio 1.0. air/fuel ratio, and the expansion of the coldflame increased as the air/fuel ratio increased. As the combustion process in the lean combustion area proceed the combustion efficiency of J-type improves. |
| Key Words:
Amplified ignition source (AIS), Coldflame, Flame kernel, Flame propagation, Reaction progress variable |
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Corresponding Author.
Dooseuk Choi , Email. 
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