Automatic pressurizing and air storing cylinder for automobile

The utility model discloses an automatic pressurizing and air storing cylinder for an automobile. The automatic pressurizing and air storing cylinder comprises a cylinder body and a power system. The automatic pressurizing and air storing cylinder is characterized in that a pressurizing device is arranged in the cylinder body, an air cavity is defined by the pressurizing device and the cylinder body, an air inlet and an air outlet which make the air cavity and the portion outside the cylinder body communicated with each other are formed in the portion, located in the air cavity, of the cylinder wall of the cylinder body, an air pressure sensor is arranged in the cylinder body and electrically connected with a judgment control module, the judgment control module is electrically connected with the pressurizing device, the judgment control module and the pressurizing device are respectively and electrically connected with the power system, and a one-way valve is arranged in the air inlet. The automatic pressuriz