Exhaust pipe of vehicular three-phase generator

The utility model relates to the technical field of engineering machinery and discloses an exhaust pipe of a vehicular three-phase generator. The exhaust pipe of a vehicular three-phase generator includes an exhaust outlet connecting pipe and an expansion joint, wherein a first end of the exhaust outlet connecting pipe is used for connecting a exhaust channel silencer port of the three-phase generator in a sealing mode, and a second end of the exhaust outlet connecting pipe is connected with a first end of the expansion joint in a sealing mode. The exhaust pipe of the vehicular three-phase generator further includes a flange plate, wherein the flange plate is fixedly connected with a exhaust pipe which penetrates the flange plate in a thickness direction, a second end of the expansion joint is arranged in the exhaust pipe in a sealing mode, and the flange plate is fixedly connected with a tool case of the three-phase generator. As an elastic compensation component which is extensible, the expansion join gener