The invention relates to an automobile cooling
system liquid adding device and a method thereof. The device comprises a three-way connector and a vacuum generator. The lower end of the three-way connector is connected with an opening of an automobile cooling
system water tank through a quick connector, the left end and the right end of the three-way connector are respectively provided with a quick opening valve, the quick opening valve at one end is connected with the vacuum generator, and the quick opening valve at the other end is inserted into a cooling
liquid tank through a flexible
pipe. In the liquid adding process, first the quick opening valve on the cooling
liquid tank side is closed, the quick opening valve on the vacuum generator side is opened,
compressed air is introduced into the vacuum generator, a pipeline of the automobile cooling
system is vacuumized, the vacuum degree is controlled by controlling the flow of the air introduced into the vacuum generator, then the quick opening valve on the vacuum generator side is closed, and the quick opening valve on the cooling
liquid tank side is opened. Under the effect of
atmosphere, cooling liquid in the cooling liquid tank is fully injected into the pipeline of the automobile cooling system instantly. The whole liquid adding process is quick and convenient, the adding quantity is accurate, operation environment is clean, and an engine does not need to be started.