Diesel vehicle catalyst tail gas sampling device and detection system

The invention relates to the technical field of automobile catalytic converter detection devices, and discloses a diesel vehicle catalytic converter tail gas sampling device and detection system.The diesel vehicle catalytic converter tail gas sampling device comprises a pipe body, a flexible pipe, a detection connector and at least two gas inlet pipes used for being inserted into a catalytic converter, the two air inlet interfaces and the detection joint are connected to the pipe body at intervals, the middle part of each air inlet pipe is connected with a control valve, the end part of each air inlet pipe is communicated with one end of the flexible pipe, and the other end of the flexible pipe is communicated with a probe nozzle. The pipe body is provided with at least two air inlet pipes used for being inserted into the catalytic converter and a detection connector used for being connected with a detection device, the end of each air inlet pipe is connected to one end of a flexible pipe, and a probe nozzle