Wear and Corrosion Evaluation of Electric Fuel Pumps with Ethanol/Gasoline Blends 2005-01-2196
The automotive electrical fuel pumps for gasoline and alcohol fueled vehicles engines are lubricated by the fuel itself. The new flexible fuel engine technology, specially in Brazil, the fuel pump is designed to be lubricated by gasohol (E22) or strait hydrated ethanol fuel but it is also exposed to the variable gasoline/alcohol blends in the flex-fuel engines. This paper presents the influence of different fuel blends, ethanol and gasohol, to the fuel pump wear and corrosion behaviors. The tested fuel pumps were designed for gasohol only engines. The fuel pumps were tested in a bench device, which simulates the vehicle fuel circuit, using gasohol (E22), hydrated ethanol (E100) or 60 % in volume ethanol-gasoline mixture (E60). The scanning electron microscopy examinations and roughness measurements were performed for tribological analysis of fuel pump gears. The observed wear and/or other deterioration mechanisms were mainly due to the abrasion and corrosion. The tests showed that abrasion mechanisms were more pronounced in the E22 fuel and the corrosion mechanisms were more damaging in the E60 and E100 fuels. The fuel pumps gears lubrication regime was calculated and the tested fuels lubricities were also measured.
Citation: Rovai, F., Tanaka, D., and Sinatora, A., "Wear and Corrosion Evaluation of Electric Fuel Pumps with Ethanol/Gasoline Blends," SAE Technical Paper 2005-01-2196, 2005, https://doi.org/10.4271/2005-01-2196. Download Citation
Author(s):
Fernando Fusco Rovai, Deniol Katsuki Tanaka, Amilton Sinatora
Affiliated:
LFS - Laboratório de Fenômenos de Superfície - EPUSP
Pages: 12
Event:
2005 SAE Brasil Fuels & Lubricants Meeting
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 2005 Transactions Journal of Fuels and Lubricants-V114-4
Related Topics:
Ethanol
Fuel pumps
Gasohol
Gasoline
Gear lubricants
Tribology
Corrosion
Wear
Microscopy
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »