| AIS TECHNOLOGY FOR INCREASING THE USABILITY OF LFG FUEL FOR SI ENGINE |
Munseok Choe1
, Kwonse Kim2, Dooseuk Choi3 |
1Yeungnam University College
2Ajou Motor College
3Kongju National University |
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| ABSTRACT |
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This study was conducted focusing on AIS (Amplified Ignition Source) technology to increase the usability of LFG (Land Fill Gas) for SI (Spark Ignition) currently being used. To simulate the LFG combustion environment, experiment was conducted by changing the LFG chemical composition ratio in CVCC (Constant Volume Combustion Chamber) to check flame kernel, coldflame, and combustion state. From the result of the analysis of the flame kernel, it was found that flame
kernels were formed only at an air/fuel ratio of 1.0 when C-type was used, and flame kernels of using AIS device were formed in all areas regardless of the air/fuel ratio. With regards to the coldflame formation, when it is analyzed at 40 ms after ignition, it was found that the coldflame propagation rate between AIS and C-type differed by more than 16 % in LFG70, which is the fuel mainly used. As for the combustion pressure, when AIS was used, it was identified that there was a difference of 3 bar or more under the same experimental conditions in all LFGs compared to when the C-type was used. Through this study, it was judged that the utilization of LFG can be extended to LFG50 when using AIS. |
| Key Words:
AIS (Amplified Ignition Source), CVCC (Constant Volume Combustion Chamber), LFG (Land Fill Gas),
Combustion pressure, Coldflame |
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Corresponding Author.
Dooseuk Choi , Email. 
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