Browse Publications Technical Papers 2007-01-4072
2007-10-29

E-85 Fuel Corrosivity: Effects on Port Fuel Injector Durability Performance 2007-01-4072

A study was conducted to investigate the effects of commercial E-85 fuel properties on Port Fuel Injector (PFI) durability performance. E-85 corrosivity, not lubricity, was identified as the primary property affecting injector performance.
Relatively high levels of water, chloride and organic acid contamination, detected in commercial E-85 fuels sampled in the U.S. in 2006, were the focus of the study. Analysis results and analytical techniques for determining contaminant levels in and corrosivity of commercial E-85 fuels are discussed.
Studies were conducted with E-85 fuels formulated to represent worst-case field fuels. In addition to contamination with water, chloride and organic acids, fuels with various levels of a typical ethanol corrosion inhibitor were tested in the laboratory to measure the effects on E-85 corrosivity. The effects of these E-85 contaminants on injector durability performance were also evaluated.
Corrosion test ratings from NACE TM0172-2001 (“Determining Corrosive Properties of Cargoes in Petroleum Product Pipelines”) [1] were determined for the test fuels. This corrosion test was found to be sensitive to the presence of low levels of typical corrosive E-85 contaminants. A recommendation for adding a corrosivity requirement to ASTM D 5798 (“Standard Specification for Fuel Ethanol (Ed75 - Ed85) for Automotive Spark-Ignition Engines”) [2] will be presented.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

The Development of Improved Fuel Specifications for Methanol (M85) and Ethanol (Ed85)

940764

View Details

TECHNICAL PAPER

Controlling Induction System Deposits in Flexible Fuel Vehicles Operating on E85

2007-01-4071

View Details

TECHNICAL PAPER

A Model for Estimating Vapor Pressures of Commingled Ethanol Fuels

2007-01-4006

View Details

X