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Influence of Supply Voltage and Fuel Conductivity in the Lifetime of Commutation System by Brushes in Electric Flex Fuel Pumps
Technical Paper
2015-36-0449
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
One of the usual measures to increase the energy efficiency in automotive vehicles has been the adoption of generators with variable voltage systems, commanded by the vehicle control unit.
Thus, the vehicle system voltage no longer remains constant during operation of the engine, but becomes variable as needed to charge the vehicle electrical system and better use of available engine torque.
A study using the Design for Six Sigma (DFSS) methodology was performed in order to understand the influence of the supply voltage and of the fuel conductivity in the lifetime of fuel pump commutation system by brushes. Durability tests were conducted in bench test, where parameters of temperature, current draw, voltage and fuel conductivity were monitored, correlating them with the results of wear in the pump commutation system.
The conclusion of the study shows how the fuel pump life varies according to the supply voltage and the conductivity of the fuel used, given that the conductivity can be affected not only by the fuel composition, but also for its quality.
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Authors
- Leonardo Yoshioka - General Motors do Brasil Limitada
- Alberto K. Watanabe - General Motors do Brasil Limitada
- Ricardo O. Horowitz - General Motors do Brasil Limitada
- Rogério Urakawa - General Motors do Brasil Limitada
- Celso Eduardo Fávero - Robert Bosch Limitada
- Lázaro Benedito de Oliveira Melo - Robert Bosch Limitada
- Renato Rigo Pinheiro - Robert Bosch Limitada
Topic
Citation
Yoshioka, L., Watanabe, A., Horowitz, R., Urakawa, R. et al., "Influence of Supply Voltage and Fuel Conductivity in the Lifetime of Commutation System by Brushes in Electric Flex Fuel Pumps," SAE Technical Paper 2015-36-0449, 2015, https://doi.org/10.4271/2015-36-0449.Also In
References
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- Brazilian Government Standards Technical Regulation ANP Nr. 3/2011 Technical characteristics of Anhydrous and Hydrous Ethanol Fuel