Method for testing exhaust back pressure of automobile engine

The invention discloses a method for testing the exhaust back pressure of an automobile engine, and belongs to the technical field of automobile testing methods.The testing method comprises the following steps that firstly, a testing module is connected to and installed on a combustion module; 2, mounting the sensor assembly modules in sequence; 3, connecting the data acquisition module with the sensor assembly module; 4, connecting the control module with the sensor assembly module and the data acquisition module; 5, a combustion module is started; 6, adjusting and setting simulation parameters of the combustion module according to the model of the test module; 7, acquiring test data through a data acquisition module; 8, analyzing the test data to obtain performance parameters of the test module; the actual exhaust process of the engine is simulated by controlling the temperature, the pressure and the flow of the high-temperature fuel gas, and the test can be completed only by controlling a combustor of an e