Wear and Corrosion Evaluation of Electric Fuel Pumps with Ethanol/Gasoline Blends

2005-01-2196

05/11/2005

Event
2005 SAE Brasil Fuels & Lubricants Meeting
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/2005-01-2196
Pages
12
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.
Additional Details
Publisher
Published
May 11, 2005
Product Code
2005-01-2196
Content Type
Technical Paper
Language
English