A new type of mass flow detection technology for vehicle twin turbines with swirl correction characteristics is introduced. The basic structure, the principle of the moment of momentum and the realization process of the technology are introduced. The improved scheme of the second turbine under unsteady flow condition is presented. According to the principles of fluid dynamics and turbomachinery, the vehicle turbine atomizer is optimized by using Concepts NREC software. Using this scheme can not only save the development cost, shorten the development period, but also improve the stability and reliability of the equipment.