The effect of hydrogen enrichment on exhaust emissions and thermal efficiency in a LPG fuelled engine |
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Authors: | Email author" target="_blank">Gyeung?Ho?ChoiEmail author Sung?Bin?Han Yon?Jong?Chung |
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Affiliation: | (1) School of Mechanical&Automotive Engineering, Keimyung University, 1000 Shindang-dong, Daegu 704-701 Dalseo-gu, Korea;(2) Department of Mechanical System, Induk Institute of Technology, San 76, Wolgye-dong, Seoul 139-749 Nowon-gu, Korea;(3) Department of Automobile, Daegu Mirae College, 270, Pyungsan-dong, Kyongbuk 712-716 Kyongsan, Korea |
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Abstract: | The concept of hydrogen enriched LPG fuelled engine can be essentially characterized as low emissions and reduction of backfire
for hydrogen engine. The purpose of study is obtaining low-emission and high-efficiency in LPG engine with hydrogen enrichment.
In order to determine the ideal compression ratio, a variable compression ratio single cylinder engine was developed. The
objective of this paper is to clarify the effects of hydrogen enriched LPG fuelled engine on exhaust emission, thermal efficiency
and performance. The compression ratio of 8 was selected to minimize abnormal combustion. To maintain equal heating value,
the amount of LPG was decreased, and hydrogen was gradually added. In a similar manner, the relative air-fuel ratio was increased
from 0.8 to 1.3 in increment of 0.1, and the ignition timing was controlled to be at MBT each case. |
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Keywords: | Liquefied Petroleum Gas Compression Ratio Minimum Spark Advance for Best Torque Relative Air-fuel Ratio Brake Specific Fuel Consumption Thermal Efficiency |
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