The body is directly connected. Mingtu cars do not have a heater water valve, and the heater water tank is directly connected to the machine body. The water tank is an important component of the water-cooled engine. As an important component of the heat dissipation circuit of the water-cooled engine, it can absorb the heat of the cylinder and prevent the engine from overheating. Due to the large specific heat capacity of water, the temperature rise after absorbing the heat of the cylinder is not much. , so the heat of the engine passes through the liquid circuit of cooling water, using water as a heat carrier to conduct heat, and then dissipates heat through large-area heat sinks in a convection manner to maintain the appropriate operating temperature of the engine.