CVT gearbox noise identification method and system

The invention discloses a CVT gearbox noise identification method and system. The CVT gearbox noise identification method comprises the following steps that the rotating speed of a steel belt in a CVT gearbox and the number of steel sheets in the steel belt are obtained; the noise frequency and noise order generated by the CVT gearbox are obtained according to the rotating speed of the steel belt and the number of the steel sheets; a plurality of noise sources generated by the whole automobile when the automobile runs are acquired, and the noise order and the noise frequency of each noise source is calculated; and a noise source of the plurality of noise sources that matches the noise order and noise frequency of the CVT transmission is identified. According to the method, when the noise is collected, all the noise generated in the driving process of the automobile can be directly recorded, and then the noise frequency and the noise order of a noise source collected by the whole automobile are screened accord