Patent ID: 7594536

Claim:
An EGR cooler comprising: tubes; a shell enclosing said tubes; a cooling water inlet, attached to an end of the shell, to supply cooling water into said shell; a cooling water outlet, attached to another end of the shell, to discharge the cooling water from said shell; a guide, attached to said shell, to guide gas into said tubes for thermal exchange of said gas with said cooling water; and a bypass conduit, arranged along an axis of and on a shell inner surface of said shell and positioned adjacent to the cooling water outlet, to guide the cooling water to a direction perpendicular to the flow of the cooling water through the inlet, said bypass conduit including, a bypass inlet formed at a position diametrically opposite to the cooling water inlet of the shell, a bypass body extending axially of said shell through the bypass inlet, and a bypass outlet extending via a bent portion into and positioned in the cooling water outlet.