Blucher Engineering Proceedings

Setembro 2023, vol.10, num.1 - XXX Simpósio Internacional de Engenharia Automotiva
Trabalho completo - Open Access Idioma principal | Segundo principal

Otimização de design para reduzir a corrosão na bomba elétrica de combustível flex fuel

Design optimization to reduce corrosion in electric flex fuel pump

PERES, Vinícius Araújo; MELO, Lazaro Benedito de Oliveira; FERNANDES, Luiz Eduardo de Azevedo

Trabalho completo:

By the 2nd law of thermodynamics for metal oxidation, it is known that corrosion cannot be avoided, but mitigating it is essential for the safety and protection of people and of the environment. In the automotive industry, one of the components most susceptible to corrosion is the fuel pump due to its electrical operation and direct exposure to fuels. This situation can lead to electrochemical corrosion and, consequently, it can contaminate the vehicle fuel supply system. With the growing incentive to use ethanol and hence the flex fuel pumps, this scenario should be focus of attention due to the properties of ethanol. This work focuses on investigating the root cause of a characteristic corrosion appearing on the fuel pump housing in durability tests. Based on the theory of electrochemical corrosion, the influence of an exposed and unused grounding terminal of the fuel pump electrical connector is proved and its removal is proposed to mitigate the corrosion. After conducting a durability test with aggressive ethanol and at high temperature on samples with and without the grounding terminal, it is found that the proposed design significantly improves the housing protection against corrosion and corroborates with the electrolysis theory.

By the 2nd law of thermodynamics for metal oxidation, it is known that corrosion cannot be avoided, but mitigating it is essential for the safety and protection of people and of the environment. In the automotive industry, one of the components most susceptible to corrosion is the fuel pump due to its electrical operation and direct exposure to fuels. This situation can lead to electrochemical corrosion and, consequently, it can contaminate the vehicle fuel supply system. With the growing incentive to use ethanol and hence the flex fuel pumps, this scenario should be focus of attention due to the properties of ethanol. This work focuses on investigating the root cause of a characteristic corrosion appearing on the fuel pump housing in durability tests. Based on the theory of electrochemical corrosion, the influence of an exposed and unused grounding terminal of the fuel pump electrical connector is proved and its removal is proposed to mitigate the corrosion. After conducting a durability test with aggressive ethanol and at high temperature on samples with and without the grounding terminal, it is found that the proposed design significantly improves the housing protection against corrosion and corroborates with the electrolysis theory.

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DOI: 10.5151/simea2023-PAP55

Referências bibliográficas
  • [1] "[1] ROBERGE, Pierre R. Corrosion Engineering:
  • [2] Principles and Practice. New York: McGraw-Hill, 2008.
  • [3] 754 p. ISBN 978-0071482431.
  • [4] [2] KOCH, G.H.; BRONGERS, M.P.H.;
  • [5] THOMPSON, N.G.; VIRMANI, Y.; PAYER, J.H.
  • [6] Corrosion Cost and Preventive Strategies in the United
  • [7] States. Materials Performance, Report No. FHWA-RD-01-
  • [8] 156, Federal Highway Administration, McLean.
  • [9] [3] MINISTRY OF MINES AND ENERGY (Brazil).
  • [10] ANP. Etanol. Brazil, 13 jul. 2020. Available in:
  • [11] https://www.gov.br/anp/pt-br/assuntos/producao-efornecimento-de-biocombustiveis/etanol. Accessed in: 15
  • [12] may 2023.
  • [13] [4] REIS, Alessandro. Etanol x gasolina: abastecer
  • [14] com álcool só vale a pena em dois estados. SP: UOL
  • [15] Carros, 1 mar. 2023. Available in:
  • [16] https://www.uol.com.br/carros/noticias/redacao/2023/03/01
  • [17] /etanol-x-gasolina-abastecer-com-alcool-so-vale-a-penaem-dois-estados.htm. Accessed in: 15 may 2023.
  • [18] [5] MINISTRY OF MINES AND ENERGY (Brazil).
  • [19] ANP. Resolution nº 764, Brasília: DOU, 21 dec. 2018.
  • [20] Available in: https://www.in.gov.br/materia/-
  • [21] /asset_publisher/Kujrw0TZC2Mb/content/id/56416199/do1
  • [22] -2018-12-21-resolucao-n-764-de-20-de-dezembro-de-2018-
  • [23] 56416135. Accessed in: 16 may 2023.
  • [24] [6] MELO, Lázaro Benedito de Oliveira;
  • [25] FERNANDES, Luiz Eduardo Azevedo; SILVA, Danilo
  • [26] Fanton Ribeiro da. Sparking Level Evaluation in DC
  • [27] Electric Fuel Pump Motor for Brazilian Flex Fuel
  • [28] Vehicle Application. SAE, SP, 2021. DOI 10.4271/2021-
  • [29] 36-0047.
  • [30] [7] LEAMAS TECHNOLOGIES. Causes of
  • [31] electrolysis in cooling system. Available in:
  • [32] https://www.leamastech.com/blog/causes-electrolysiscooling-system. Accessed in: 24 may 2023.
  • [33] [8] SAE INTERNATIONAL. SAE J1645: Fuel
  • [34] Systems and Components - Electrostatic Charge
  • [35] Mitigation. 13 sep. 2019. DOI: 10.4271/j1645_201909.
  • [36] [9] PYTHON SOFTWARE FOUNDATION. Python
  • [37] Language Reference, version 3.9.16. Available in:
  • [38] https://docs.python.org/3/reference/. Accessed in: 24 may
  • [39] 2023.
  • [40] [10] BRADSKI, Gary. The OpenCV Library. Dr.
  • [41] Dobb’s Journal of Software Tools, 2000.
  • [42] [11] ABENZA, Javier Abellán. HSV color model, 26
  • [43] dec. 2018. Available in:
  • [44] https://medium.com/neurosapiens/segmentation-andclassification-with-hsv-8f2406c62b39. Accessed in: 24 may
  • [45] 2023.
  • [46] [12] SUZUKI, Satoshi. Topological structural
  • [47] analysis of digitized binary images by border following.
  • [48] Computer vision, graphics, and image processing, v. 30(1),
  • [49] p. 32-46, 1985. DOI: 10.1016/0734-189X(85)90016-7"
Como citar:

PERES, Vinícius Araújo; MELO, Lazaro Benedito de Oliveira; FERNANDES, Luiz Eduardo de Azevedo; "Otimização de design para reduzir a corrosão na bomba elétrica de combustível flex fuel", p-335-341. In: Anais do XXX Simpósio Internacional de Engenharia Automotiva . São Paulo: Blucher, 2023.
ISSN 23577592, DOI 10.5151/simea2023-PAP55

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