Aluminum alloy heat exchanger for cooling an exhaust gas of thermal motors of a vehicle, comprises two different circuits for exchanging heat between two fluids, where one of two fluids consists of an exhaust gas

摘要

The aluminum alloy heat exchanger (1) for cooling an exhaust gas of thermal motors of a vehicle, comprises two different circuits for exchanging heat between two fluids. One of two fluids consists of an exhaust gas. An insulating layer is uniformly present on an internal wall of a conduit in which the exhaust gas circulates, where the conduit comprises inserts, wings or blocks. A thickness or a height of the insulating layer is less than 100 mu m. The thickness of the insulating layer is 15-38 mu m on a surface of internal wall of the conduit where the exhaust gas circulates. The aluminum alloy heat exchanger (1) for cooling an exhaust gas of thermal motors of a vehicle, comprises two different circuits for exchanging heat between two fluids. One of two fluids consists of an exhaust gas. An insulating layer is uniformly present on an internal wall of a conduit in which the exhaust gas circulates, where the conduit comprises inserts, wings or blocks. A thickness or a height of the insulating layer is less than 100 mu m. The thickness of the insulating layer is 15-38 mu m on a surface of internal wall of the conduit where the exhaust gas circulates. The insulating layer on the inserts, wings or blocks is 8-16 mu m, where a distance between two consecutive inserts or wings is 1.25 mm. A width and a height of the exchanger body is 40-120 mm and 130 mm respectively. An independent claim is included for a process of manufacturing a heat exchanger.