Patent ID: 9103250
Filing Date: 2015-08-11
Classification: F01N,F02B,F02M,F28D,F28F

Abstract:
1. An exhaust gas heat exchanger for exchanging heat between exhaust gas and cooling fluid of an internal combustion engine, comprising: a tube forming an exhaust gas flow path through which the exhaust gas flows; a fin disposed in the exhaust gas flow path; and a plurality of protruded tabs protruded from at least one of the tube and the fin to inhibit an exhaust gas flow, wherein each of the plurality of protruded tabs has a polygonal shape with at least four sides having at least a bottom side, one lateral side and another lateral side, and an angle of the one lateral side to the bottom side is set smaller than an angle of the other lateral side to the bottom side and set smaller than 90 degrees, each of the plurality of protruded tabs is inclined to an upstream side along an exhaust gas flow direction, and, in each of the plurality of protruded tabs, the bottom side is placed to intersect with a perpendicular direction to the exhaust gas flow direction, and the other lateral side is located upstream from the one lateral side.