Engine Materials Compatability with Alternative Fuels

Pawel, Steve¹  Moore, D.² 

[1] Oak Ridge National Laboratory;USCAR

关键词: engine materials;    alternative fuels;    ethanol;   

DOI  :  10.2172/1077199
RP-ID  :  NFE-09-02242
RP-ID  :  ORNL/TM-2013/143
PID  :  OSTI ID: 1077199

美国|英语

来源: SciTech Connect

【 摘 要 】

The compatibility of aluminum and aluminum alloys with synthetic fuel blends comprised of ethanol and reference fuel C (a 50/50 mix of toluene and iso-octane) was examined as a function of water content and temperature. Commercially pure wrought aluminum and several cast aluminum alloys were observed to be similarly susceptible to substantial corrosion in dry (< 50 ppm water) ethanol. Corrosion rates of all the aluminum materials examined were accelerated by increased temperature and ethanol content in the fuel mixture, but inhibited by increased water content. Pretreatments designed to stabilize passive films on aluminum increased the incubation time for onset of corrosion, suggesting film stability is a significant factor in the mechanism of corrosion.