Outlet/inlet piping structure for intercooler

Abstract

An outlet/inlet piping structure of an intercooler according to the invention has a construction in which an outlet/inlet piping 5 is branched in such a fashion as to possess a plurality of flow passages from one of the flow passages of a distal end position 5 a spaced apart from a header tank 4 of an intercooler to a connection portion 5 b to the header tank so that a fluid pressure loss does not substantially occur in the flow between the distal end position and the connection portion. In other words, a ratio of a sectional area of the flow passage of the connection portion to a sectional area of the connection portion of the far end portion is at least 78%.

1 . An outlet/inlet piping structure of an intercooler for causing high-pressure air from a supercharger to flow into an intercooler and sending the high-pressure air, the air density of which is increased upon cooling, from said intercooler to an engine main body, wherein at least one of an inlet piping and an outlet piping has a construction such that it is divided into a plurality of flow passages from one flow passage at a distal end position spaced apart from a header tank of said intercooler to a connection portion to said header tank, and a fluid pressure loss does not substantially occur between said distal end position and said connection portion.  
   
   
       2 . An outlet/inlet piping structure of an intercooler according to  claim 1 , wherein a sectional area of the flow passage of said connection portion to a sectional area of the flow passage of said distal end position is at least 78%.  
   
   
       3 . An outlet/inlet piping structure of an intercooler according to  claim 1 , wherein said outlet/inlet piping structure is formed by combining half split members divided into a plurality of units in an axial direction of tubes with one another and fixing them.  
   
   
       4 . An outlet/inlet piping structure of an intercooler according to  claim 1 , wherein a flat flow passage connecting said divided flow passages is provided.  
   
   
       5 . An outlet/inlet piping structure of an intercooler according to  claim 4 , wherein a support pole is arranged in said flat flow passage.  
   
   
       6 . An intercooler comprising: 
 two header tanks on an inlet side and an outlet side so arranged as to oppose each other;    an inlet piping connected to a supercharger side piping for passing high-pressure air from a supercharger and provided in said inlet side header tank;    a heat exchange core connected to both of said header tanks, for cooling the high-pressure air flowing in from said inlet piping and increasing an air density; and    an outlet piping connected to an engine side piping for sending the high-pressure air to the engine main body and provided on said outlet side header tank;    wherein at least one of said inlet piping and said outlet piping is branched in such a fashion as to possess a plurality of flow passages from one of the flow passages of a distal end position spaced apart from said inlet side header tank to a connection portion to said inlet side header tank so that a fluid pressure loss does not substantially occur between said distal end position and said connection portion.