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Gomes, Paulo César de Ferreira ; Lopes, Gustavo Santos ; Mendes, Carlos Fernando ; Franieck, Erwin Karl ; Alves, Marcos ; Teixeira, Alysson Fernandes ; Baeta, José Guilherme Coelho ;


In order to mitigate the greenhouse gases emission from automobiles and to reduce the dependency on fossil fuels, various alternatives for replacing the internal combustion engine are available. However, the best solution for this dilemma must take into account the geographic and social-economic characteristics of the country, its energy matrix, its emission legislation, and the fuel carbon footprint during its entire lifecycle. Brazil has a strong reputation for its fleet of Flex-Fuel vehicles, long date experience in the use of ethanol fuel and its distribution network. This differentiates it from other global markets and justifies a unique approach for the CO2 emission reduction.
This article describes a project with the main objective of optimizing the efficiency of Flex-Fuel engines running on ethanol, without deteriorating their performance with gasoline. The influence of the geometric compression ratio, the airflow structure and the inlet valve opening/closing strategy was investigated for fuel consumption and engine performance. The analysis of the experimental data confirmed the benefits of the compression ratio optimization on the combustion efficiency. Therefore, the development of efficient Flex-Fuel engines will lead to a sustainable route for mobility in Brazil.


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DOI: 10.5151/simea2018-PAP22

Referências bibliográficas
  • [1] ANP – Agência Nacional do Petróleo, Gás Natural e Biocombustíveis, “Resolução ANP no. 40”, de 25/10/2013, republicada DOU em 30/10/2013. [2] Kutlar, O. A., Arslan, H., Calik, A.T., “Methods to Improve efficiency of four stroke, spark ignition engines at part load”, Energy Conversion and Management 46 (2005), pp 3202 – 3220, ed. Elsevier. [3] Ebrahimi, R., Hoseinpour, M., “Performance Analysis of Irreversible Miller Cycle under Variable Compression Ratio”, Journal of Thermophysics and Heat Transfer, vol. 27, no.3, July-September 2013. [4] Benajes, J. et al. “Potential of Atkinson cycle combined with EGR for pollutant control in a HD diesel engine.” Energy Conversion and Management 50.1 (2009): 174-183, ed. Elsevier. [5] Heywood, John B. "Internal combustion engine fundamentals." (1988): 169-170. [6] PETROBRAS - Petróleo Brasileiro S.A., “A gasolina Podium possui a mais alta octanagem do mercado”, Available on, accessed April 2018. [7] Gomes, P. C. F., Mendes, C. F., Lopes, G. S., Franieck, E. K., et al., “High Efficiency Flex-Fuel Engines and the End of the 70% Paradigm”, SAE paper 2017-36-0162, SAE International Congress, 2017, São Paulo, Brazil. [8] Gomes, P. C. F., Mendes, C. F., Franieck, E. K., Lopes, G.S., et al., “Ethanol to Improve the Fuel Conversion Efficiency of S.I. Engines in the Brazilian Market”, XXV Simpósio de Engenharia Automotiva – SIMEA 2017, São Paulo, Brazil. [9] AEA, “Eficiência Energética Sustentável”, Associação Brasileira de Engenharia Automotiva, São Paulo, 2017.
Como citar:

Gomes, Paulo César de Ferreira; Lopes, Gustavo Santos; Mendes, Carlos Fernando; Franieck, Erwin Karl; Alves, Marcos; Teixeira, Alysson Fernandes; Baeta, José Guilherme Coelho; "HIGH EFFICIENCY FLEX-FUEL ENGINES, THE ROUTE FOR BRAZILIAN MOBILITY", p. 147-160 . In: . São Paulo: Blucher, 2018.
ISSN 2357-7592, DOI 10.5151/simea2018-PAP22

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