A method for reducing fuel permeation through gasketed joints in an internal combustion engine (10) includes surface treating the gaskets in a halogenated medium before placing them into service. A low-cost elastomer such as acrylic, EPDM or HNBR, can be used for the gasket body. The halogenated medium may comprise either a liquid bath or a gaseous bath, into which the gasket is immersed. The halogenated medium bath is excited by heating to accelerate the halogenation process. A gasket treated according to this invention possesses a chemically altered exterior surface which substantially enhances its fuel permeability resistance at relatively low cost.
申请公布号
WO2008137829(A3)
申请公布日期
2009.03.05
申请号
WO2008US62622
申请日期
2008.05.05
申请人
FEDERAL-MOGUL CORPORATION;DEWALD, RICHARD, E.;RUEGER, UTE;SMITH, KERRY, C.;WALZ, TIMO;TRIPATHY, BHAWANI, S.
发明人
DEWALD, RICHARD, E.;RUEGER, UTE;SMITH, KERRY, C.;WALZ, TIMO;TRIPATHY, BHAWANI, S.