Patent ID: 7032577

Claim:
An exhaust gas heat exchanger comprising: a tube bundle composed of exhaust-gas tubes, a bypass passage in a common housing, and an exhaust gas valve comprising a flexurally rigid, moveable closure member, wherein the tube bundle is arranged in a first space, through which liquid coolant flows, and the bypass passage is arranged in a second, separate space, wherein the tube bundle and the bypass passage open into a common exhaust gas inlet region and a common exhaust gas outlet region, wherein the exhaust gas valve is arranged in the inlet region and is actuated by an actuating drive and guides the flow of exhaust gas through the tube bundle or the bypass passage, wherein the closure member is designed as a pivotable half-flap, one longitudinal side of which is secured to a drive shaft arranged transversely with respect to the exhaust gas flow (A), and wherein the half-flap is arranged in a valve housing with an approximately rectangular cross section of flow and alternately closes off one half of the cross section or the other half of the cross section.