Automobile power assembly performance test general platform and design method thereof

The invention discloses an automobile power assembly performance test general platform and a design method thereof. The automobile power assembly performance test general platform is characterized by comprising a horizontal iron-cast platform, a horizontal adjustment apparatus, an automobile driving apparatus, a transmission input shaft inertia simulation apparatus, a first rotating speed torque sensor, a first shat coupling, a detected speed changer, a second shaft coupling, a second rotating speed torque sensor, a vehicle equivalent rotary inertia simulation apparatus, a vehicle equivalent rotary inertia driving apparatus and a reverse dragging apparatus. Each apparatus of the test platform realizes movement in an X direction and a Y direction through the horizontal adjustment apparatus so as to be adaptive to speed changers with different dimensions as much as possible, and at the same time, the vehicle equivalent rotary inertia simulation apparatus and the reverse dragging apparatus are introduced, such that rotary inertia of an automobile in case of change of a working condition is changed in real time, and the driving working condition of the automobile can be better simulated.