Control system for circulation of gas, in particular of exhaust gas of an engine

摘要

The system has an exhaust gas recirculation (EGR) type cooler (1) with a circuit for the circulation of exhaust gases with heat exchange with a coolant. A by-pass conduit (3) circulates the gases without subjecting them to a significant cooling. A container (6) is linked by welding to an input or output of the cooler. A connection (7) e.g. flange, assembles the container with an exhaust gas recirculation line. The container and the connection are integrated in a single body (8) fabricated by an investment casting. The body has a contiguous section (10) for the connection with the conduit.