Automobile low-frequency silencer

The utility model discloses a low-frequency silencer of an automobile. Silencing pipe, the two ends of the silencing pipe are fixedly connected with the left end cover and the right end cover correspondingly. A gas channel is formed in the silencing pipe; two ends of the gas channel are respectively communicated with the left end cover and the right end cover; two partition plates are arranged inthe silencing pipe; the gas channel penetrates through the two partition plates; the silencing pipe is divided into a left low-frequency cavity, an air exchange cavity and a right low-frequency cavityby the two partition plates, an energy through hole is formed in the air channel, the energy through hole is formed in the air exchange cavity, and the air exchange cavity is connected with the leftlow-frequency cavity and the right low-frequency cavity through air exchange pipes in a communicating mode. The utility model has the advantages of low-frequency noise reduction, obvious noise reduction, simple structure and co