Method for manufacturing composite prestress enhanced ceramic cylinder sleeve

Abstract

The invention discloses a composite prestress enhanced ceramic cylinder sleeve and manufacturing method thereof. The composite prestress enhanced ceramic cylinder sleeve comprises a metal outer sleeve and a ceramic lining, wherein the manufactured ceramic lining is put into a metal casting die and is heated to a certain temperature, molten metal is poured in the casting die, and after the molten metal is cooled naturally, the metal outer sleeve has pressure stress on the ceramic lining to improve the mechanical strength of ceramics, so that the ceramics can meet the requirement of the using strength of the cylinder sleeve. The method for manufacturing the composite prestress enhanced ceramic cylinder sleeve is simple, and the good matching of the ceramics and metal can be realized and prestress can be controlled by regulating coefficients of thermal expansion of the ceramics and the metal. When the lining cylinder sleeve manufactured by the method is used, the outside of the cylinder sleeve is not required to be cooled by using a cooling liquid system, the radiation loss of the cylinder sleeve can be reduced, and the temperature of a combustion chamber of an internal-combustion engine can be improved, so that fuel can be combusted quickly and fully, and the efficiency of a heat engine of the internal-combustion engine is improved.

Description

technical field [0001] The invention relates to a cylinder liner of an internal combustion engine, in particular to a method for manufacturing a composite prestressed reinforced ceramic liner liner. Background technique [0002] At present, the cylinder liners of internal combustion engines are all made of metal materials. In order to prevent the temperature of the cylinder liners from being too high when the internal combustion engine is working, which will affect the service strength of the cylinder liners, a water cooling system is installed outside the cylinder liners to ensure that the internal combustion engine does not operate at a high temperature. work normally. Due to the heat absorption and heat dissipation of the water cooling system, part of the heat energy will be consumed, which will reduce the temperature of the combustion chamber in the cylinder. In some cases, the fuel in the combustion chamber will not burn quickly and completely, reducing the heat engine ...

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Problems solved by technology

Due to the heat absorption and heat dissipation of the water cooling system, part of the heat energy will be consumed, which will reduce the temperature of the combustion chamber in the cylinder. In some cases, the fuel in the combustion chamber will not burn quickly and completely, reducing the heat engine efficiency of the internal combustion engine. It will also produce harmful gases from incomplete combustion, polluting the environment

[0003] In view of the above situation, some data propose to use the high temperature resistance of ceramic materials to manufacture water-free ceramic internal combustion engines. However, due to the brittleness of ceramic materials, they do not have basic assembly functions and use strength. Therefore, in the production of ceramic cylinder liners There are difficulties in the application and use, and some people design the method of prestressing by precision machining, heating, assembly and cooling, but the processing accuracy is too high, it is difficult to ensure that the size of the prestress is appropriate, and the stability of the enhanced performance is difficult to guarantee.

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