In order to study the longitudinal impulse problem on 20 000 t heavy haul combined train in China. the kinetic model ofcombined train with an example of coal dedicated gondola car of C80 series was established by Matlab/Simulink module. It was mainlyanalyzed that effects of longitudinal impulses under emergency braking conditions for combined train with 1+2+1 type. and types ofcombina... https://miamistares.shop/product-category/dash-parts-and-interior-accessories/