Patent ID: 7703506

Claim:
An exhaust heat exchanger for an exhaust gas recirculation system, comprising: a first flow path for intake air for an internal combustion engine; a second flow path for exhaust of an internal combustion engine; and a housing enclosing said first and second flow paths; wherein said first and second flow paths are each divided into a plurality of flow channels in heat-conducting, metallically connected contact with each other, said flow channels including elements promoting heat exchange between the flow channels; wherein the housing includes a plastic housing cover enclosing a stack of flat tubes and a metallic bottom plate to which the housing cover is secured; and wherein a baffle is supported in the housing between the stack of tubes and the housing cover to direct the intake air across the elements promoting heat exchange of the first flow path and to direct heat inwardly toward the stack of flat tubes and away from the housing cover, the baffle extending along the stack of tubes in a dimension substantially parallel to the flow of intake air through the flow channels.