ROSEMONT, Ill.—Joseph Walker, global director, advanced materials development for Freudenberg-NOK Sealing Technologies GmbH & Co., will give a presentation at the SAE 2014 Commercial Vehicle Engineering Congress in Rosemont on Oct. 7.
The presentation will focus on Freudenberg-NOK's research on how biodiesel engine oil dilutions impact common sealing elastomers, which the firm said was launched in response to published accounts highlighting concerns associated with diluted oil in heavy machinery.
Walker's presentation will begin at 8 a.m. in the Donald E. Stephens Convention Center, Freudenberg-NOK said.
“As the large earth-moving equipment and other heavy machinery becomes cleaner by using biodiesel fuels, manufacturers are going to experience more motor oil contamination in their engines from this fuel,” Walker said in a statement.
The executive said biodiesel fuels have a much higher boiling point, and the fuel is miscible with the engine oil, which means more fuel remains in the oil during use and this diluted oil mixture impacts engine and component operation.
Freudenberg-NOK said this study seeks to understand how oil-fuel dilution affects sealing elements, which Walker said is particularly important in the construction industry where heavy machinery is being constantly leased and operated for long periods between maintenance cycles.
“We saw a need to study how our static and dynamic seals would behave in diluted engine oil,” Walker said. “What this study revealed is that there are specific grades of fluoroelastomers … that offer the most robust sealing solutions to issues with biodiesel blends.”