Cold start protective solution for engine and preparation thereof

Abstract

The invention provides protective solution for cold starting of an engine and a preparation method thereof, which belong to the field of lubricant additive. At present, any lubricant or lubricant additive can not completely solve the phenomena of 'dry friction' or 'semi-dry friction' for the engine. The protective solution consists of the following substances in weight percentage: 6.10 percent of zirconium oxide, 5.50 percent of yttrium oxide, 73.50 percent of soybean oil, 13.00 percent of antiwear composition polyfluortetraethylene, and 1.90 percent of additive, wherein the additive comprises 0.95 percent of molybdenum borate and 0.95 percent of nanometer rare earth fluoride. The preparation method comprises the following steps: pouring the soybean oil in a reaction kettle to be heated to 60 DEG C; adding the zirconium oxide and the yttrium oxide in the reaction kettle to stir and heat up to 65 DEG C; adding the polyfluortetraethylene in the reaction kettle to stir and heat up to 70 DEG C; adding the 1.90 percent of the additive to the reaction kettle to stir and heat up to 95 DEG C, and stopping heating; cooling the reaction product to room temperature; and performing sub-packaging. With the protective solution, a vehicle can be started through ignition without preheating so as to save time. The protective can prolong service time of the lubricant over 50 percent relatively, and has the advantages of environmental protection, energy conservation and resource conservation.

Description

technical field [0001] The invention relates to a chemical additive added in engine lubricating oil, belonging to the field of lubricating oil additive preparation. Background technique [0002] Usually, before the vehicle is started, it is necessary to start the engine to idle for a few minutes, that is, to warm up for a few minutes, especially in winter. Because the lubricating oil generally returns to the oil (crankshaft) box after the engine stops running for 6 hours, and there is no lubricating oil on the surface of all operating parts such as engine pistons, cylinders, and valves. . In the dry grinding state, the engine will be in the "load dry grinding state" when the vehicle starts to drive immediately after ignition, and the load dry wear is 10 to 20 times that of the engine at idle speed. [0003] In order to avoid dry wear of the load, after the vehicle has been stopped for 6 hours, people usually do not start driving immediately after starting the engine, but l...

AI Technical Summary

Problems solved by technology

But this lubricating oil is about 2-300 yuan more expensive than ordinary lubricating oil (for example, the capacity produced by Shell Company of the United States is 4L: the retail price of fully synthetic "gray shell" lubricating oil market is as high as 460 yuan a barrel; semi-synthetic "blue shell" "Lubricating oil is 280 yuan a barrel; non-synthetic "yellow shell" lubricating oil is 130 yuan a barrel), although fully synthetic lubricating oil is used, because of its special chemical composition, it cannot be attached to the surface of the running parts for a long time, but when the lubricating oil is replaced Discharge with waste oil

To ensure that the engine is free from dry grinding and semi-dry grinding at the moment of starting, this kind of fully synthetic lubricating oil must be replaced every time it is maintained, because it is expensive and unaffordable for general car owners

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