Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
TOWARDS A UNIFIED UNDERSTANDING OF ETHANOL IMPACT ON GUM FORMATION IN GASOLINE-ETHANOL BLENDS: COMPARISON OF EXPERIMENTAL RESULTS WITH LITERATURE
Submission Author:
Florian Alain Yannick Pradelle , RJ
Co-Authors:
José Eduardo Carvalho, Florian Alain Yannick Pradelle, Sergio Braga, ANA ROSA MARTINS, franck turkovics, Renata Nohra Chaar Pradelle
Presenter: José Eduardo Carvalho
doi://10.26678/ABCM.COBEM2019.COB2019-0207
Abstract
During storage, gum is formed in gasoline by a slow oxidation of some unstable compounds, such as olefins. The excess of gum formation affects fuel combustion and durability, injection pattern and increases emission of pollutants. Therefore, it is extremely important to have a better understanding of the fuel behavior, in particular the impact of biofuels. Previous studies provided opposite interpretation of the impact of bioethanol in blends with gasoline. This work consists in an attempt to unify the data about gum formation in Brazilian gasoline-ethanol blends, investigating the influence of aging period, temperature and ethanol content on washed and unwashed gum formation. It seems that without aging or after storage at low temperature, ethanol has a dilution effect, while with aging at higher temperature, ethanol presented a catalytic impact, with a maximum activity around 20 vol%. Data from several works found in previous literature and experimental results of tests under progress were analyzed to validate this theory.
Keywords
Gum formation, gasoline-ethanol blend, Storage, Temperature
