Patent ID: 8573286

Claim:
A heat exchanger for a motor vehicle, comprising a first flow path defined by a first array of separate parallel flow ducts having a rectangular cross section, the plurality of flow ducts in the first array being arranged in a plurality of rows and a plurality of columns, a first set of turbulence-generating members provided in the first flow path, a deflection region following the first flow path, a second flow path following the deflection region defined by a second array of separate parallel flow ducts having a rectangular cross section, the plurality of flow ducts in the second array being arranged in a plurality of rows and a plurality of columns, and a second set of turbulence-generating members provided in the second flow path, wherein each flow duct in the first array of flow ducts has a same flow resistance and each flow duct in the second array of flow ducts has a same flow resistance, and wherein a first depth into which the first set of turbulence-generating members project into the first flow path is less than a second depth into which the second set of turbulence-generating members project into the second flow path such that a flow resistance of the first flow path is lower than a flow resistance of the second flow path.