Multi piece turpocharger housing

Abstract

A turbocharger casing including a first casing part, wherein an oil line starts at a first opening on an outer side of the first casing part, runs through the first casing part and opens out at a second opening of a substantially hollow-cylindrical bearing receptacle of the first casing part. Such turbocharger casings of the prior art are produced in a complicated manner by a sand casting process and therefore give rise to high production costs. The teaching is to arrive, without functional losses, at a simple-to-produce and cost-effective turbocharger casing by the turbocharger casing having a second casing part attached to the first casing part and by both casing parts together forming a cooling water line provided for cooling the bearing receptacle. It is thus possible to arrive at a lightweight turbocharger casing by conventional machining production methods and joining technique, and this turbocharger casing can be produced cost-effectively.

1 - 10 . (canceled) 
     
     
         11 . A turbocharger housing comprising:
 a first housing part, an oil duct starting at a first opening of an outer side of the first housing part, extending right through the first housing part to open at a second opening into a substantially hollow cylindrical bearing receptacle of the first housing part, and   a second housing part connected to the first housing part, the first and second housing parts together forming a cooling water conduit for cooling the bearing receptacle.   
     
     
         12 . The turbocharger housing as recited in  claim 11  wherein the second housing part is connected to the first housing part by at least one of gluing, welding, crimping and soldering. 
     
     
         13 . The turbocharger housing as recited in  claim 12  wherein connection of the second housing part to the first housing part is formed by two connecting seams extending along the cooling water conduit. 
     
     
         14 . The turbocharger housing as recited in  claim 11  wherein the cooling water conduit and the oil duct of the first housing part are machine finished. 
     
     
         15 . The turbocharger housing as recited in  claim 11  wherein the first housing part connectable to at least one of a cold housing and a hot housing. 
     
     
         16 . The turbocharger housing as recited in  claim 15  wherein the first housing part is screwable to the hot housing using spacing bushings. 
     
     
         17 . The turbocharger housing as recited in  claim 15  further comprising a third housing part forming a fixing adapter for fixing the first housing part to the hot housing. 
     
     
         18 . The turbocharger housing as recited in  claim 17  further comprising a fixing element both for screwing the first housing part to the hot housing and for fixing the third housing part to the first housing part. 
     
     
         19 . The turbocharger housing as recited in  claim 11  wherein the second housing part or a third housing part is made out sheet metal or out of a forged part. 
     
     
         20 . A turbocharger comprising:
 a bearing for a common shaft of a compressor;   a turbine; and   the turbocharger housing as recited in  claim 11 , the bearing being arranged in the bearing receptacle.