Patent ID: 9109547
Filing Date: 2015-08-18
Classification: F02M,Y02T

Abstract:
1. An exhaust gas recirculation (EGR) cooler for cooling exhaust gas from an internal combustion engine with a coolant, the EGR cooler comprising: at least one channel configured to allow the exhaust gas to flow therethrough, the at least one channel having an interior surface and an exterior surface; and a casing defining a cooling chamber around the at least one channel, the cooling chamber being configured to enable heat transfer between the exhaust gas and the coolant, the casing having: wherein the interior surface of the at least one channel is made of a first metal, and is configured to be in contact with the exhaust gas; wherein the exterior surface of the at least one channel is made of a second metal having a higher thermal conductivity than the first metal, and is configured to be in contact with the coolant; and wherein only the at least one channel is disposed inside the casing so as to enable heat transfer between all the exhaust gases flowing through the EGR cooler and the coolant flowing through the cooling chamber.