Three-prevention testing liquid for automobile engine before leaving factory

Abstract

The invention relates to a three-prevention testing liquid for an automobile engine before leaving a factory, belonging to the field of testing liquids for automobile engines. The three-prevention testing liquid for the automobile engine comprises the following raw materials in parts by weight: 13-16 parts of terylene-level glycol, 4.0-6.0 parts of monoethanolamine, 0.5-0.9 part of sodium benzoate, 1.0-1.5 parts of adipic acid, 3.0-5.0 parts of polyethylene glycol (PEG-2000), 0.01-0.04 part of polyether (6100), 0-0.05 part of potassium phosphate, 0.2-0.25 part of sodium nitrite, 0.55-1.2 parts of sodium molybdate, 0-0.05 part of kathon 886, 0.05-0.1 part of sodium 2-mercaptobenzothiazole, 0-0.02 part of staining agent, 0.55-0.85 part off sodium hydroxide, and distilled water used for keeping the constant volume to 100 parts. The invention is beneficial to improving the heat exchange cooling performance of a water jacket of the engine and is suitable for car engines, light-duty vehicleengines and heavy-duty commercial vehicle engines before leaving the factory.

Description

Technical field: [0001] The invention relates to a three-proof test fluid for automobile engines before leaving the factory, which is applied in the automobile engine industry. Background technique: [0002] Before the car engine leaves the factory or enters the assembly line, it must be tested (trial run) or run-in on the designated test bench. The running time ranges from 2 minutes to 150 minutes, so as to find out the process problems in the production and assembly process. [0003] In the test run process, it is necessary to use a test machine liquid to circulate in the water jacket of the engine. On the one hand, it can meet the cooling and heat exchange requirements during the test run process. On the other hand, it can fully wash and filter out the solid particles that may remain in the water jacket to ensure The reliability and performance of the water pump after loading. [0004] Foreign countries adopt the "just-in-time production mode", that is, the engine immedi...

AI Technical Summary

Problems solved by technology

[0008] Patent No. 200610087359.2 of the 'engine coolant' patent, the characteristic component is a mixture of polymeric tricarboxylic acid and alkali metal salt of fatty acid containing triazine ring in the molecule, also contains sodium silicate and silicate stabilizer, the three used The molecular weight of polycarboxylic acid is large, it is very easy to form calcium and magnesium insoluble salts, and lose the effect of anti-corrosion and anti-rust; while other fatty acids are isooctanoic acid and sebacic acid, foaming problems will occur under large flow circulation conditions; There is also the problem of high cost; it is suitable for cars or light trucks, but it is not suitable for the test process of the engine before leaving the factory because it does not contain gas-phase anti-rust components

[0009] The patent No. 200610047082.0 of 'A Engine Coolant' contains AEO-9 non-ionic surfactant, its HLB value: 12.5~13.5, which belongs to the active ingredient of detergent, which is very prone to foaming problems, and is suitable for cars or light vehicles Trucks, because they do not contain gas-phase anti-rust components, are not suitable for the test process of the engine before leaving the factory

[0010] The patent No. 200710119912.0 of 'An automobile engine coolant and its preparation method' has no low-molecular-weight organic acid components and contains unstable triethanolamine components. Its thermal shear resistance is not enough. Although the cost is low, it is suitable for For cars or light trucks, since they do not contain gas-phase antirust components, they are not suitable for the test process of the engine before leaving the factory

[0011] The patent No. 99119155.2 of 'A Protective Agent for Automotive Engine Water Tank' has no low-molecular-weight organic acid components and is completely composed of inorganic salts. It has insufficient anti-rust and anti-corrosion capabilities. It is suitable for cars or light trucks. Anti-rust ingredients, not suitable for the test process of the engine before leaving the factory