CYLINDER-HEAD GASKET COMPRISING AN EDGE-TO-EDGE STOP RING

The invention concerns a head-cylinder gasket with at least an opening (14) corresponding to a combustion chamber, comprising a so-called outer plate (12) including a circular rib (16), surrounding the opening (14), arranged at a distance d from the edge of said opening (14), and a support plate (18) arranged against the surface of the outer plate (12) bearing the rib (16) in projection, including an opening with a diameter larger than the opening (14) of the outer plate so as to define a space wherein is arranged a stop ring (20) in the form of an annular wedge with an internal diameter corresponding to that of the opening (14) and an external diameter substantially adjusted to the opening of the support plate so as to be arranged edge-to-edge. The invention is characterised in that it comprises an element (24) interposed between the stop ring (20) and the support plate maintaining said stop ring. El objetivo de la invencion es una junta de culata con al menos una abertura (14) que corresponde a una camara de combustion, que comprende por una parte, una denominada placa (12) exterior que incluye una costilla (16) circular, que rodea la abertura (14), colocada a una distancia d del borde de la abertura (14), y una placa de soporte (10) colocada contra la superficie de la placa (12) exterior que lleva en saliente la costilla (16), que incluye una abertura en un diametro mas grande que la abertura (14) de la placa exterior de manera que define un espacio en el cual esta colocado un anillo de tope (20) en l a forma de una cuna anular con un diametro interior que corresponde al de la abertura (14) y un diametro exterior sustancialmente ajustado a la abertura de la placa de soporte de manera que este colocada borde a borde. La invencion esta caracterizada porque comprende un elemento (24) interpuesto entre el anillo de tope (20) y la placa de soporte que asegura el mantenimiento del anillo de tope.