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Comparison of the Effects of Hydrogen and Hydroxygen Additions and Oxygen Enrichment on the Emission Characteristics of Ef7 Engine
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نویسنده
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Rahimi Reza ,Shirneshan Alireza
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منبع
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Journal Of Renewable Energy And Environment - 2019 - دوره : 6 - شماره : 1 - صفحه:29 -35
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چکیده
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In this study, the effects of hydrogen and hydroxygen additions and oxygen enrichment on the emission characteristics of a gasoline engine (ef7) were investigated and compared with each other. the simulation was launched by gtpower at different engine speeds with 5 % to 15 % volume fractions for both of oxygen and hydrogen enrichment and 4.5 % to 9 % volume fractions of hydroxygen addition in the intake gas, respectively. in addition, the model was validated by experimental data. the results showed that co emission decreased from 11 % to 28 % in the hydrogenenrichment condition. moreover, carbon monoxide production was reduced from 28 % to 42 % for hydroxygen addition, and this pollutant emission experienced a reduction of 51 % to 67 % for oxygen enrichment. according to the results, hc emission decreased up to 13% in the hydrogenenriched air condition, and it was reduced from 30 % to 43 % during hydroxygen addition. in addition, hc emission experienced maximum reduction of 47 % to 68 % during oxygen addition. on the other hand, there was an opposite trend for nox emission. it was observed that nox emission increased by around 40 % and 75 % for hydrogen and hydroxygen enrichment, respectively. moreover, nitrogen oxides enhanced 2 to 5 times during oxygen enrichment, compared to that in the normal condition of the engine. results showed that 15 % oxygen enrichment and 9 % hydroxygen enrichment had significant effect on the reduction of hc and co emissions, and oxygen enrichment had greater effect on the rise of nox emissions than hydrogen and hydroxygen additions.
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کلیدواژه
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Hydrogen ,Hydroxygen ,Modeling ,Emission ,Enrichment
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آدرس
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Islamic Azad University, Najafabad Branch, Department Of Mechanical Engineering, Iran, Islamic Azad University, Najafabad Branch, Aerospace And Energy Conversion Research Center, Department Of Mechanical Engineering, Iran
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پست الکترونیکی
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arshirneshan@yahoo.com
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Authors
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