Cooling system

Abstract

The present invention relates to a cooling system ( 1 ) for an internal combustion engine, in particular an exhaust gas cooling system in a motor vehicle, having a housing ( 2 ) in which a heat transmission device ( 4 ) is arranged in a first canal ( 3 ). The housing ( 2 ) is configured as a metal pressure die-cast housing and has according to the invention an integrated second canal ( 6 ) that is formed by housing contours ( 5, 5′ ), said second canal being configured as a bypass canal and bypassing the heat transmission device ( 4 ).

1 . A cooling system for an internal combustion engine, comprising:
 a pressure die-casting housing, wherein a heat transmission device is provided in a first canal, wherein the housing has an integrated second canal formed by housing contours, said second canal being configured as a bypass canal and bypassing the heat transmission device.   
   
   
       2 . The cooling system as specified in  claim 1 , wherein a pivotable bypass flap providing a flow division is effected between the first canal and the second canal. 
   
   
       3 . The cooling system as specified in  claim 1 , wherein the housing has a first part and a second part. 
   
   
       4 . The cooling system as specified in  claim 3 , wherein cooling contours, cooling ribs, are on at least one of the two housing parts, said cooling contours protruding into the first canal, generally perpendicular to the direction of flow. 
   
   
       5 . The cooling system as specified in  claim 3 , wherein cooling contours are on both of the two housing parts, said cooling contours engaging with one another when the housing is in the assembled state. 
   
   
       6 . The cooling system as specified in  claim 4 , wherein at least one of the cooling contours is hollow and is flowed through by a cooling fluid. 
   
   
       7 . The cooling system as specified in  claim 4 , wherein at least one of the cooling contours includes a blind hole that is acted upon by a cooling fluid. 
   
   
       8 . The cooling system as specified in  claim 1 , wherein the housing is a light metal pressure die-cast housing, such as an aluminium pressure die-cast housing. 
   
   
       9 . The cooling system as specified in  claim 1 , wherein the housing is a magnesium or zinc pressure die-cast housing. 
   
   
       10 . The cooling system as specified in  claim 2 , wherein the housing has two parts. 
   
   
       11 . The cooling system as specified in  claim 4 , wherein cooling contours are on both of the two housing parts, said cooling contours engaging with one another when the housing is in the assembled state. 
   
   
       12 . The cooling system as specified in  claim 5 , wherein at least one of the cooling contours is hollow and is flowed through by a cooling fluid. 
   
   
       13 . The cooling system as specified in  claim 5 , wherein at least one of the cooling contours includes a blind hole that is acted upon by a cooling fluid. 
   
   
       14 . The cooling system as specified in  claim 6 , wherein at least one of the cooling contours includes a blind hole that is acted upon by a cooling fluid. 
   
   
       15 . The cooling system as specified in  claim 2 , wherein the housing is a light metal pressure die-cast housing, such as an aluminium, a magnesium or a zinc pressure die-cast housing. 
   
   
       16 . The cooling system as specified in  claim 3 , wherein the housing is a light metal pressure die-cast housing, such as an aluminium, a magnesium or a zinc pressure die-cast housing. 
   
   
       17 . The cooling system as specified in  claim 4 , wherein the housing is a light metal pressure die-cast housing, such as an aluminium, a magnesium or a zinc pressure die-cast housing. 
   
   
       18 . The cooling system as specified in  claim 5 , wherein the housing is a light metal pressure die-cast housing, such as an aluminium, a magnesium or a zinc pressure die-cast housing. 
   
   
       19 . The cooling system as specified in  claim 6 , wherein the housing is a light metal pressure die-cast housing, such as an aluminium, a magnesium or a zinc pressure die-cast housing. 
   
   
       20 . The cooling system as specified in  claim 7 , wherein the housing is a light metal pressure die-cast housing, such as an aluminium, a magnesium or a zinc pressure die-cast housing.