In the Brazilian automotive market, the Flex Fuel vehicles are known for their ability to run with gasoline, ethanol, or any proportional mixture of them. To allow this flexibility, the vehicle’s fuel system has been adapted to support differences in fuel types available in the Brazilian market, including contaminated fuel that in this paper will be treated as aggressive ethanol. The fuel pump, which has the function of supply fuel to the engine, had to be specially developed for the flex fuel application to support the specific characteristics in Brazilian ethanol. The focus of this paper is to evaluate the influence of different fuels - gasoline, ethanol, and aggressive ethanol in the sparking level of the DC fuel pump commutation system. Using a digital oscilloscope, the voltage signals of the fuel pump were recorded, and it was applied a mathematical formulation to determine the sparking level of the DC motor for the different fuels. The results show that the higher the voltage, the larger the spark level intensity in all fuels considered herein. In addition, the increase in the fuel conductivity also showed an increase on the value for the evaluated parameter. Consequently, the fuel electrical conductivity that is one of the parameters monitored by the Brazilian specification, has a critical influence on the fuel pump operation, which can affect the fuel pump lifetime, due to electro erosion wear caused on the carbon brush and carbon commutator owing to the sparking level.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    SPARKING LEVEL EVALUATION in DC ELECTRIC FUEL PUMP MOTOR for BRAZILIAN FLEX FUEL VEHICLE APPLICATION


    Additional title:

    Sae Technical Papers



    Conference:

    SAE BRASIL 2021 Web Forum ; 2021



    Publication date :

    2022-02-04




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    SPARKING LEVEL EVALUATION in DC ELECTRIC FUEL PUMP MOTOR for BRAZILIAN FLEX FUEL VEHICLE APPLICATION

    de Oliveira Melo, Lázaro Benedito / de Azevedo Fernandes, Luiz Eduardo / da Silva, Danilo Fanton Ribeiro | British Library Conference Proceedings | 2021


    Development of 1D Simulation Model of Electric Fuel Pump for Flex-Fuel Application

    Galhardo, André / Ferreira, André Morais / Busani, Rafael Borges et al. | SAE Technical Papers | 2016


    Rating the performance of brazilian flex fuel vehicles

    Vicentini,P.C. / Kronberger,S. / Petroleo Brasileiro,PETROBRAS,BR et al. | Automotive engineering | 2005


    RATING THE PERFORMANCE OF BRAZILIAN FLEX FUEL VEHICLES

    Vicentini, Pedro Caffaro / Kronberger, Stefan | SAE Technical Papers | 2005


    Development of 1D simulation model of electric fuel pump for flex-fluel application

    Ferreira, Andre Morais / Busani, Rafael Borges / Galhardo, Andre et al. | British Library Conference Proceedings | 2016