Patent ID: 8448429

Claim:
An engine exhaust gas heat recovery device that recovers heat from exhaust gas from an engine by performing heat exchange between the exhaust gas and engine coolant, a plurality of spray holes facing a partition wall of a coolant passage having been provided in a circumferential wall of an exhaust gas inflow tube, being configured such that a total volume of the exhaust gas is guided in a radial direction by the provision of an obstruction part at an exhaust gas inflow direction end of the exhaust gas inflow tube, a coolant inflow inlet having been provided in a face opposite from an exhaust gas inflow inlet in the exhaust gas inflow direction, the coolant passage having been provided up to the exhaust gas inflow inlet side, the spray holes having been provided from the exhaust gas inflow inlet side to the coolant inflow inlet side in the exhaust gas inflow direction, and the total volume of the exhaust gas being caused to directly collide with the partition wall of the coolant passage in all areas in the exhaust gas inflow direction.