Cold start and full cycle emissions from a flexible fuel vehicle operating with natural gas, ethanol and gasoline

Alves Martins, Amanda and Dias Rocha, Rodrigo Anderson and Sodre, Jose Ricardo (2014) Cold start and full cycle emissions from a flexible fuel vehicle operating with natural gas, ethanol and gasoline. Journal of Natural Gas Science and Engineering, 17. pp. 94-98. ISSN 1875-5100

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Abstract

This paper describes a comparative study between the pollutant emissions produced by a spark ignition engine operating with three different fuels: commercial gasoline with 22% of ethanol (E22), compressed natural gas (CNG) and hydrous ethanol. The emission levels of oxides of nitrogen (NOx), carbon monoxide (CO), carbon dioxide (CO2), total hydrocarbons (HC), and methane (CH4) produced by a flexible fuel engine operating according to the US 1975 Federal Test Procedure (FTP 75) were analyzed. Tests were performed with a mid-size sedan powered by 1.4-L spark ignition engine on a chassis dynamometer. The results for the cold start tests demonstrate that E22 produced the lowest CO and HC emissions, while CNG produced the lowest NOx emissions. Considering the full test cycle, CNG emitted the lowest CO, NOx and CO2 concentrations, and the lowest fuel consumption. Gasoline presented the lowest emission levels of HC and CH4. Ethanol showed the highest fuel consumption and higher pollutant emission levels than
the other fuels, except for CO2, which was higher than CNG and lower than gasoline.

Item Type: Article
Uncontrolled Keywords: Pollutant emissions Internal combustion engines Natural gas Ethanol Gasoline
Subjects: H800 Chemical, Process and Energy Engineering
Divisions: Faculty of Computing, Engineering and the Built Environment
Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment
Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment > Advanced Systems Engineering
UoA Collections > UoA15: General Engineering
Depositing User: $ Ian McDonald
Date Deposited: 21 Dec 2016 15:14
Last Modified: 21 Dec 2016 15:14
URI: http://www.open-access.bcu.ac.uk/id/eprint/3740

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