Vehicle engine exhaust gas cooling heat exchanger has perforated sheet metal casing containing parallel ducts supported by internal partitions

摘要

The heat exchanger consists of an outer sheet metal casing (2) with perforations (3), and one or more parallel inner ducts (12a, 12b, 12c, 12d) with outer walls in contact with the cooling air. The ducts are supported by internal partitions (14a, 14b, 14c, 14d) in the casing, which has end covers (8, 10) with an intake (4) and outlet (6) connected to the vehicle's exhaust pipe. The ducts inside the casing form a circuit connected to end manifold chambers (15a, 15d) formed by the end covers and outer partitions and intermediate chambers (15b, 15c) between outer and inner partitions.