Lightweight Valve

Abstract

A lightweight valve ( 1 ), in particular for internal combustion engines, is provided, with a valve stem ( 3 ), with a hollow valve cone ( 5 ) and with a valve disk ( 7 ) closing the valve cone ( 5 ), the valve disk ( 7 ) being provided with a recess ( 23 ) on its flat side facing the valve cone ( 5 ). The lightweight valve ( 1 ) has a valve cone ( 5 ) projecting with its end region of greater diameter into the recess ( 23 ).

1 - 7 . (canceled)  
     
     
         8 . A lightweight valve comprising: 
 a valve stem;    a hollow valve cone connected to the valve stem and having a greater diameter end region and an smaller diameter end region; and    a valve disk closing the valve cone and having a flat side facing the valve cone, the valve disk and valve cone in a connection region having an at least approximately continuous transition, the valve disk being provided on the flat side facing the valve cone with a recess, the recess defining a centering or supporting seat of the valve disk and the valve cone projecting into the recess with the greater diameter end region of greater diameter,    the valve cone being a separate component and fixed at the smaller diameter end region to the valve stem or to a stem connection element provided on the valve disk.    
     
     
         9 . The lightweight valve as claimed in  claim 8  wherein the transition is conical.  
     
     
         10 . The lightweight valve as claimed in  claim 8  wherein the valve disk is of disk-shaped design and has a conical longitudinal portion in the connection region, a cone angle of the conical longitudinal portion being the same as a cone angle of the greater diameter end region of the valve cone.  
     
     
         11 . The lightweight valve as claimed in  claim 8  wherein a further centering or supporting seat for the end of smaller diameter of the valve cone is provided on the valve stem or the stem connection element.  
     
     
         12 . The lightweight valve as claimed in  claim 8  wherein the valve disk has a support for the valve cone.  
     
     
         13 . The lightweight valve as claimed in  claim 11  wherein the valve is an internal combustion engine valve.