Introduction

●	Dry ice cleaning is used in an automobile engine, mainly cleaning the combustion chamber, intake valve, engine room, automobile chassis, tires, and other carbon deposition and dirt
●	High-speed scour, collision to the surface of the dirt, the kinetic energy will be transferred to the dirt, and the resulting shear force makes the dirt roll away with the airflow, achieving the purpose of removing the dirt
●	Frozen embrittlement, when dry ice particles of -78.5℃ act on the surface of the object to be cleaned, the first frozen embrittlement of the dirt, so that the adsorption force on the surface decreases sharply, while the surface area increases, part of the
●	Micro explosion peeling, dry ice particles impact after gasification volume rapidly expanded 600-800 times, further impact on pollutants, peeling pollutants