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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
Evaluation of the possible benefits of developing engines that use only ethanol as fuel
Submission Author:
Daniel da Silva Tonon , SP
Co-Authors:
Daniel da Silva Tonon, Cleverson Bringhenti, Ezio Garcia, Jesuino Takachi Tomita
Presenter: Daniel da Silva Tonon
doi://10.26678/ABCM.ENCIT2020.CIT20-0156
Abstract
Over the years, the automotive industry has faced increasing restrictions related to pollutant emissions generated by the combustion of fossil fuels. In order to try to reduce the environmental impact, some strategies have been proposed, including the use of biofuels and the use of electric and hybrid motors instead of internal combustion engines. Regarding electric and hybrid motors, however, there are still great doubts about the environmental impacts that the production of these new propulsion systems would generate, and what would be the amount of electric energy needed to maintain the current vehicle fleet within Brazil. In the case of renewable fuels, mainly ethanol, these have been used and studied for a long time in Brazil, and this alternative seems to have a smoother transition for both industry and the market. However, with the advent of flex engines, the development of internal combustion engines that operated exclusively with ethanol has been halted in Brazil, and the maximum potential of this fuel is not being used. This work presents a study considering what are the possible benefits to be achieved with the development of an internal combustion engine that uses only ethanol as fuel. The results obtained show that this type of approach would be able to provide an average increase in the torque of the current engines by up to 5.36%, or a reduction in the net fuel consumption of up to 5.6%, if the torque and power were maintained at the current levels and the total engine displacement was reduced.
Keywords
ethanol, Knocking, compression ratio, piston engine, Engine
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