Flanged rubber combustion seal

F - Mech Eng,Light,Heat,Weapons – 02 – F

Patent

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Details

F02F 11/00 (2006.01) F16J 15/12 (2006.01)

Patent

CA 2216390

An annular elastomeric combustion seal for a cylinder head gasket of an internal combustion engine includes a radially inner sealing section and a radially outer section. A first integral cantilevered section is disposed between the inner sealing section and the outer sealing section while a second integral cantilevered section extends radially outwardly from the outer section and is bonded to an inner peripheral edge of the base plate. The seal includes a plurality of grooves with roots, the roots formed by means of the cantilevered sections. Once the gasket is installed, the grooves are substantially diminished, but the seal maintains its natural recovery characteristics. A generally U-shaped flange encloses substantially all of the inner sealing section.

Cette invention concerne un joint d'étanchéité annulaire de culasse de moteur à combustion interne, qui comporte une partie annulaire isolante intérieure et une partie annulaire extérieure. La partie annulaire isolante intérieure est reliée à la partie annulaire isolante extérieure par une section en dépression tandis que la partie isolante extérieure est reliée à la paroi intérieur du cylindre par une autre section en dépression collée à ladite paroi. Lesdites sections en dépression délimitent une série de gorges dans le joint annulaire. Une fois le joint en place, les gorges sont sensiblement comprimées, mais le joint conserve ses propriétés naturelles de retour élastique. Un profilé ayant la forme générale d'un U recouvre pratiquement toute la partie isolante intérieure du joint.

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