A detection system and method for the patency of an engine cooling water jacket

Abstract

The application provides a detection system for the patency of the engine cooling water jacket, comprising: a first pressure sensor, a second pressure sensor, a water tank, a water pump, a control unit, a valve and a flow meter; the control unit controls the water pump to make the coolant flow from the The water inlet of the cooling water jacket enters, flows out from the water outlet, enters the water tank, and then enters the water pump to form a circulation loop; the control unit controls the valve to adjust the flow of coolant entering the cooling water jacket to be tested, according to the current coolant flow value sent by the flowmeter, the first The water inlet pressure sent by the first pressure sensor, the water outlet pressure sent by the second pressure sensor, and the pre-stored non-blocking state coolant inlet and outlet water pressure drop range table, determine whether the cooling water jacket to be tested is unobstructed under the current coolant flow value. Quickly and flexibly judge the patency of the water flow in the cooling water jacket to avoid engine failure caused by casting problems of the water jacket of parts.

Description

technical field [0001] The invention relates to the technical field of detection, and more specifically, to a detection system and method for the patency of an engine cooling water jacket. Background technique [0002] There is a cavity inside some heated parts of the engine (cylinder block, cylinder head, water jacket exhaust pipe, etc.), and cooling water is passed through the cavity. To reduce the temperature of the heated parts, these cavities through which cooling water flows are called cooling water jackets. [0003] As the power density of the engine continues to increase, the heat load of the engine is getting higher and higher. As the main cooling method of the engine, the flow and heat transfer of the coolant in the cooling water jacket directly affect the working efficiency of the cooling system, which in turn affects the engine body and cylinder head. , the service life and reliability of high heat load parts such as water jacket exhaust pipe. Restricted by the...

AI Technical Summary

Problems solved by technology

[0005] Among them, the endoscopic detection method is time-consuming and laborious, and there is no clear evaluation standard, and the key positions of complex parts, such as the plum petal area connected to the upper and lower water jackets of the cylinder head, cannot be detected; while the sampling cutting observation method has a small number of samples and is highly destructive , and the impurities in the cutting fluid will be deposited in the water cavity during the cutting process, and cannot be separated from the casting sand

[0006] It can be seen that there are disadvantages in the existing testing methods for the unobstructed flow of the cooling water jacket.

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