The car turbocharger uses the exhaust gas from the engine to drive a turbine, and the turbine drives a compressor connected to it to compress the fresh air entering from the outside, and through a cooler to reduce the air temperature and increase the air density, and then the The high-density, high-pressure, low-temperature air is transported into the engine intake manifold, fully mixed with the injected fuel to form more combustible mixture, and explodes under the ignition of the spark plug to generate power. This allows the engine to take in more air for the same displacement, increasing its efficiency and performance. Automobile turbocharger is a device that utilizes exhaust gas energy recovery, which can effectively improve the working state and output characteristics of the engine.