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Compatibility of Elastomers and Metals in Biodiesel Fuel Blends
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 01, 1997 by SAE International in United States
Annotation ability available
Alternative fuels are being evaluated in automotive applications in both commercial and government fleets in an effort to reduce emissions and United States dependence on diesel fuel. Vehicles and equipment have been operated using 100 percent biodiesel and various blends of biodiesel and diesel fuel in a variety of applications, including farming equipment and transit buses.
This government study investigates the compatibility of four base fuels and six blends with elastomer and metallic components commonly found in fuel systems. The physical properties of the elastomers were measured according to American Society of Testing and Materials (ASTM) D 471, “Standard Test Method for Rubber Property-Effect of Liquids,” and ASTM D 412, “Standard Test Methods for Rubber Properties in Tension.” These evaluations were performed at 51.7°C for 0, 22, 70, and 694 hours. Tensile strength, hardness, swell, and elongation were determined for all specimens.
Six metal specimens were stored for 6 months at 51.7°C. Visual inspection of the specimens was performed, and total acid number (TAN) was determined using ASTM D 664, “Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration.”
The results showed reduced swelling characteristics in many materials when introduced to biodiesel and biodiesel fuel blends. Biodiesel and biodiesel fuel blends exhibited severe corrosion with copper-containing metals and high TAN'S with all metals evaluated.
|Technical Paper||Changes in Elastomer Swell with Diesel Fuel Composition|
|Technical Paper||Impact of Biodiesel Blends on Fuel System Component Durability|
|Technical Paper||Elastomer Compatibility of Blends of Biodiesel and Fischer-Tropsch Diesel|
CitationBessee, G. and Fey, J., "Compatibility of Elastomers and Metals in Biodiesel Fuel Blends," SAE Technical Paper 971690, 1997, https://doi.org/10.4271/971690.
SAE 1997 Transactions - Journal of Fuels and Lubricants
Number: V106-4 ; Published: 1998-09-15
Number: V106-4 ; Published: 1998-09-15
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