Patent ID: 8915292
Filing Date: 2014-12-23
Classification: F02M,F28D,F28F,Y02T

Abstract:
1. An exhaust gas heat exchanger comprising: a housing including an exhaust gas inlet, an exhaust gas outlet, a coolant inlet, and a coolant outlet; and a stack at least partially surrounded by the housing, the stack including, a first tube defining a first exhaust gas flow path, a second tube defining a second exhaust gas flow path, a coolant duct between the first tube and the second tube and the coolant duct defining a coolant flow path between the coolant inlet and the coolant outlet, and a fin located within the coolant duct between the first tube and the second tube, wherein the fin includes a first portion and a second portion defined along a length of the fin measured in a flow direction of the coolant flow path, wherein the first tube includes a first portion and a second portion defined along a length of the first tube measured in a flow direction of the first exhaust gas flow path, wherein the first portion of the fin is fixed to the first portion of the first tube such that the first portion of the fin is coupled to the first portion of the first tube for movement with respect to the housing, and wherein the second portion of the fin is supported in the housing for movement relative to the second portion of the first tube to permit movement of the second portion of the first tube with respect to the second portion of the fin.