Fuel management systems having a fluororubber component in contact with biodiesel fuel

Abstract

Disclosed herein is a fuel management system having at least one fluororubber component in contact with biodiesel fuel wherein said 5 fluororubber component comprises i) a peroxide cured fluoroelastomer comprising copolymerized units of vinylidene fluoride and at least one other fluoromonomer, said fluoroelastomer having cure sites selected from the group consisting of iodine and bromine atoms, and ii) 0 to 5000 parts by weight of an inorganic acid acceptor per million parts fluoroelastomer.

1 . In a fuel management system having at least one fluororubber component in contact with biodiesel fuel, the improvement wherein said fluororubber component comprises i) a peroxide cured fluoroelastomer comprising copolymerized units of vinylidene fluoride and at least one other fluoromonomer, said fluoroelastomer having cure sites selected from the group consisting of iodine and bromine atoms, and ii) 0 to 5000 parts by weight of an inorganic acid acceptor per million parts fluoroelastomer. 
     
     
         2 . A fuel management system of  claim 1  wherein said biodiesel fuel comprises a fatty acid alkyl ester of biological origin. 
     
     
         3 . A fuel management system of  claim 2  wherein said fatty acid alkyl ester of biological origin is selected from the group consisting of rape seed oil methyl ester, soybean oil methyl ester, and palm kernel oil methyl ester. 
     
     
         4 . A fuel management system of  claim 1  wherein said biodiesel fuel comprises a blend of a fatty acid alkyl ester of biological origin and petroleum diesel fuel. 
     
     
         5 . A fuel management system of  claim 1  wherein said fuel management system is in a motor vehicle. 
     
     
         6 . A fuel management system of  claim 1  wherein said fuel management system is in a stationary diesel powered device. 
     
     
         7 . A fuel management system of  claim 1  wherein said fuel management system is in a biodiesel supply system. 
     
     
         8 . A fuel management system of  claim 1  wherein said fuel management system is in a biodiesel manufacturing plant. 
     
     
         9 . A fuel management system of  claim 1  wherein said peroxide cured fluoroelastomer comprises copolymerized units of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene. 
     
     
         10 . A fuel management system of  claim 1  wherein said peroxide cured fluoroelastomer comprises copolymerized units of vinylidene fluoride, perfluoro(methyl vinyl ether) and tetrafluoroethylene. 
     
     
         11 . A fuel management system of  claim 1  comprising 0 to 1000 parts by weight of an inorganic acid acceptor per million parts fluoroelastomer. 
     
     
         12 . A fuel management system of  claim 11  comprising 0 to 500 parts by weight of an inorganic acid acceptor per million parts fluoroelastomer.