Connection pipe for connecting an active muffler to an exhaust system for an internal combustion engine

A connection pipe (7), for the fluidic connection of a muffler housing (5) of an active muffler (4) with an exhaust gas-carrying pipe (3) of an exhaust line (2) of an exhaust system (1) for an internal combustion engine, of a motor vehicle, has a pipe wall (8), which envelopes a connection space (9) leading from the muffler housing (5) to the exhaust pipe (3). Through the improved thermal protection of the muffler (4), a cooling pipe (14), through which a coolant can flow, has an inlet section (15) and an outlet section (16) and is arranged in the connection space. The inlet section (15) passes through the pipe wall (8), whereby a coolant inlet (17), through which coolant can enter the cooling air pipe, is arranged outside the connection pipe (7). The outlet section (16) passes through the pipe wall (8), whereby a coolant outlet (19), through which coolant can escape from the cooling pipe (14), is arranged outside the connection pipe (7). 本发明涉及种连接管（7），用于流体地连接有源消声器（4）的消声器壳体（5）和用于特别是机动车辆的内燃机的排气系统（1）的排气道（2）的携带废气