Acceleration tests using gasolines formulated with di-TAE, TAEE and MTBE ethers |
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Authors: | Renato Cataluña Díocles Dalávia Eliana Menezes Rafael Wagner |
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Affiliation: | a Department of Physical Chemistry, Institute of Chemistry, Federal University of Rio Grande do Sul, Av. Bento Gonçalves, 9500, 91501-970 Porto Alegre, RS, Brazil b Petrobras Engine Laboratory, Av. Getúlio Vargas, 11001, 92420-221 São José, Canoas, RS, Brazil |
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Abstract: | This study evaluates the acceleration and performance of car engines fueled by gasoline formulated with di-tert-amyl ether (di-TAE), tert-amyl ethyl ether (TAEE), and methyl tert-butyl ether (MTBE), whose compositions contain an oxygen concentration of 2.7 wt.%. The performance tests were carried out in a roll dynamometer using a Fiat-Strada commercial vehicle equipped with open-loop electronic fuel injection. The use of ethers from partially renewable sources, such as di-TAE and TAEE in gasoline formulations, is an attractive alternative to reduce fossil fuel consumption. These ethers, both pure and in formulations, require a lower air/fuel ratio, since part of the oxygen needed to oxidize the fuel is already present in the molecule. The results obtained in acceleration tests using gasoline formulated with the di-TAE, TAEE and MTBE ethers indicated that the best acceleration response was obtained with the gasoline/TAEE mixture and the lowest specific consumption was with the gasoline/di-TAE mixture. TAEE is an adequate alternative to replace MTBE in Otto cycle internal combustion engines, since this compound is partially biorenewable and provides a comparable thermal efficiency and lower specific fuel consumption. |
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Keywords: | Ethers Gasoline formulation Performance tests |
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