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A review study on diesel and natural gas and its impact on CI engine emissions


Alrazen, Hayder Abdullah Luaibi and Ahmad, Kamarul Arifin (2017) A review study on diesel and natural gas and its impact on CI engine emissions. Pertanika Journal of Science & Technology, 25 (3). pp. 983-994. ISSN 0128-7680; ESSN: 2231-8526


Diesel engines produce high emissions of nitrogen oxide, smoke and particulate matter. The challenge is to reduce exhaust emissions but without making changing their mechanical configuration. This paper is an overview of the effect of natural gas on the diesel engine emissions. Literature review suggests that engine load, air-fuel ratio, and engine speed play a key role in reducing the pollutants in the diesel engine emissions with natural gas enrichment. It is found that increasing the percentage of natural gas (CNG) will affect emissions. Nitrogen oxide (NOx) is decreased and increased at part loads and high loads respectively when adding CNG. The reduction in carbon dioxide (CO2), particulate matter (PM) and smoke are observed when adding CNG. However, carbon monoxide (CO) and unburned hydrocarbon (HC) are increased when CNG is added.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Publisher: Universiti Putra Malaysia Press
Keywords: CO; CO2; Diesel; Engine; Emissions; HC; Natural gas (CNG); NOx
Depositing User: Nabilah Mustapa
Date Deposited: 26 Oct 2017 09:01
Last Modified: 25 Jan 2018 08:44
URI: http://psasir.upm.edu.my/id/eprint/57861
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