Engine cooling water system device with automatic exhaust function

Abstract

The invention discloses an engine cooling water system device with an automatic exhaust function. In the device, a Venturi tee pipe is arranged among an engine cooling water outlet pipe, an expansion tank and a water tank; a water inlet of a thermostat and an inlet pipe of the Venturi tee pipe are connected with an engine cooling water outlet pipe respectively; the water outlet pipe is connected with the expansion tank; a bypass pipe of the Venturi pipe, an water outlet pipe of the expansion tank and a water outlet pipe of the thermostat are connected with the water tank; an water outlet pipe of the water tank and a water distributing pipe of the thermostat are connected to a water pump, and a water outlet of the water pump is connected to an engine cooling water inlet; and an air inlet pipe and an air outlet pipe of the Venturi tee pipe form a Venturi pipe structure in the cavity of the Venturi tee pipe. No matter however the engine runs, steam bubbles and air bubbles in a cooling system can be exhausted automatically, an air cock in a cooling circulation system can be eliminated, so the cooling effect of the engine can be remarkably improved. Meanwhile, the corrosion of oxygen molecules to metal can be reduced after the air in a coolant is exhausted, so the service life of the engine can be prolonged.

Description

technical field [0001] The invention belongs to an engine cooling system, in particular to a device for automatically discharging gas in an engine cooling water system. Background technique [0002] Diesel engines are widely used in large motor vehicles due to their high power output. The cooling system can keep the engine working at a suitable temperature under various working conditions, and most engines are water-cooled. However, in a closed water cooling system, the presence of air or steam bubbles will reduce the cooling effect. Because in a closed cycle system, air acts as an air lock to hinder water circulation, and if there is air in the engine water cooling system, it will also cause metal corrosion. Therefore, when the engine cooling system is working, the generated gas must be discharged. At present, the air in the engine cooling water system is mainly discharged by opening the thermostat vent plug, or all the gas is discharged to the expansion tank in the large...

AI Technical Summary

Problems solved by technology

Therefore, if the bleed plug of the thermostat has not been opened, the gas generated in the engine cannot be discharged in time.

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