Turbocharger Lubrication Feed Adapter

Abstract

A fitting or adapter for attaching connecting an oil feed tube to a bearing housing of a turbocharger includes a body having a cylindrical sidewall with a central through-channel and an annular groove on an outside thereof for holding a seal ring, such as an O-ring. The sidewall has a plurality of radial holes, the holes spaced apart around a circumference of the cylindrical body and each connecting the central channel and the groove. The radial holes each can have a diameter of between ¼ and ⅓ of a width of the groove taken along an axial direction of the cylindrical sidewall.

The invention claimed is: 
     
         1 . An oil inlet fitting for a turbocharger, comprising:
 a body having a cylindrical sidewall with a central through-channel and an annular groove on an outside thereof for holding an seal ring, the sidewall having at least one radial hole connecting the central channel and the groove.   
     
     
         2 . The fitting according to  claim 1 , wherein the at least one radial hole comprises four radial holes that are spaced apart around a circumference of the cylindrical sidewall and each radial hole connects the central channel and the groove. 
     
     
         3 . The fitting according to  claim 1 , comprising an O-ring fit into the groove. 
     
     
         4 . The fitting according to  claim 3 , wherein the at least one radial hole comprises four radial holes that are spaced apart around a circumference of the cylindrical sidewall and each radial hole connects the central channel and the groove. 
     
     
         5 . The fitting according to  claim 1 , wherein the radial hole has a diameter of between ¼ and ⅓ of a width of the groove taken along an axial direction of the cylindrical sidewall. 
     
     
         6 . The fitting according to  claim 5 , wherein the at least one radial hole comprises a plurality of radial holes that are spaced apart around a circumference of the cylindrical body and each radial hole connects the central channel and the groove. 
     
     
         7 . The fitting according to  claim 1 , wherein the at least one radial hole comprises a plurality of radial holes that are spaced apart around a circumference of the cylindrical body and each radial hole connects the central channel and the groove. 
     
     
         8 . The fitting according to  claim 7 , wherein each of the radial holes has a diameter of between ¼ and ⅓ of a width of the groove taken along an axial direction of the cylindrical sidewall. 
     
     
         9 . The fitting according to  claim 7 , wherein the body includes a socket at one end for attachment of a tube, the tube being open into the central channel. 
     
     
         10 . The fitting according to  claim 1 , wherein the body includes a socket at one end for attachment of a tube, the tube being open into the central channel. 
     
     
         11 . A fitting for attaching one conduit to another conduit, comprising:
 a body having cylindrical sidewall with a central through-channel and an annular groove on an outside thereof for holding an seal ring, the sidewall having at least one radial hole connecting the central channel and the groove.   
     
     
         12 . The fitting according to  claim 11 , wherein the at least one radial hole comprises four radial holes spaced apart around a circumference of the cylindrical sidewall. 
     
     
         13 . The fitting according to  claim 11 , comprising an O-ring fit into the groove. 
     
     
         14 . The fitting according to  claim 11 , wherein the radial hole has a diameter of between ¼ and ⅓ of a width of the groove taken along an axial direction of the cylindrical sidewall. 
     
     
         15 . The fitting according to  claim 14 , wherein the at least one radial hole comprises a plurality of radial holes that are spaced apart around a circumference of the cylindrical body and each radial hole connects the central channel and the groove. 
     
     
         16 . The fitting according to  claim 11 , wherein the at least one radial hole comprises a plurality of radial holes that are spaced apart around a circumference of the cylindrical body and each radial hole connects the central channel and the groove. 
     
     
         17 . The fitting according to  claim 16 , wherein each of the radial holes has a diameter of between ¼ and ⅓ of a width of the groove taken along an axial direction of the cylindrical sidewall.