Patent ID: 8511074
Filing Date: 2013-08-20
Classification: F28D,F28F

Abstract:
1. A heat transfer unit for an internal combustion engine, the heat transfer unit comprising: a first channel with an inlet and an outlet, the first channel being configured to have a fluid to be cooled flow therethrough; a second channel configured to have a cooling fluid flow therethrough; at least one partition wall disposed so as to separate the first channel from the second channel; and ribs extending from the at least one partition wall into the first channel and disposed in a principal flow direction of the fluid to be cooled; wherein the first channel comprises a first section and a second section successive in the principal flow direction, the ribs of the first section having a first cross section in a first flow-off portion that is constant in the principal flow direction, and the ribs of the second section having a second cross section comprising a section in which two side walls extend parallel to each other before widening in a second flow-off portion in the principal flow direction.