Patent ID: 7628199

Claim:
A heat exchanger, comprising: a block with at least one first flow passage for a first gaseous medium, which is to be cooled, and at least one second flow passage for a second gaseous medium, which is a cooling medium, wherein the at least one first and at least one second flow passages are in a cross-current arrangement with respect to one another, wherein the at least one first flow passage is connected on an inlet side and an outlet side to manifolds fitted onto the block, and wherein fins are arranged in the second flow passage, a heat transfer device, which has a different heat transfer capacity in the inlet region than in an adjoining region, is arranged in the at least one first flow passage, wherein the heat transfer device includes internal corrugation fins, wherein a first internal corrugation fin is arranged in the inlet region and a second internal corrugation fin is arranged in a remaining region of the at least one first flow passage, wherein the first internal corrugation fin has a higher thermal conductivity than the second internal corrugation fin.