Novel hollow sodium filled valve

A hollow valve technology, which is applied in the field of gas vehicle parts, can solve the problems of high working temperature, valves that cannot meet the requirements of internal combustion engines, and poor heat dissipation performance of valves, so as to ensure heat dissipation performance, reduce weight, ensure corrosion resistance and use The effect of longevity

Inactive Publication Date: 2011-12-07
江苏欧尔特气门有限公司
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Problems solved by technology

[0002] With the development of internal combustion engines in the direction of adjusting high loads, the operating temperature of the valve is getting higher and higher, and the operating temperature of the exhaust valve is as high as 850-900 degrees. The traditional valve can no longer meet the requirements of the internal combustion engine.
In order to solve the above technical problems, recently, in the production of valves, in order to make th

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  • Novel hollow sodium filled valve
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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the drawings.

[0014] As shown in the figure, in order to solve the above technical problems, a new type of hollow sodium valve of the present invention is composed of a disc 1, a shaft 2 and a plug 3. The shaft 2 has a hollow part 4 along the axial direction. The hollow part 4 is filled with metallic sodium material, and the quantity of metallic sodium material is not limited. In this embodiment, in order to improve the heat dissipation of the valve, metallic sodium occupies 50%-60% of the volume of the hollow part 4, because metallic sodium It occupies 50%-60% of the volume of the hollow part. When the metallic sodium is converted from solid to liquid, it can make the liquid metallic sodium easier to flow up and down, ensuring the fluidity and thermal conductivity of the liquid metallic sodium, thereby further improving the cost Invention of heat dissipation.

[0015] During processing, the metal s...

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Abstract

The invention provides a novel hollow sodium filled valve. The novel hollow sodium filled valve is composed of a plate part, a rod body and a plug, wherein a hollow part which moves along the axial direction is arranged in the rod body; and the hollow part is filled with metal sodium materials of which the melting point is 97.81 DEG C. When the valve works, the temperature increases rapidly, and the metal sodium is converted from solid into liquid; liquid sodium scours the plate part and the rod body of the valve continuously to transfer the heat of the plate part and the neck part of the valve out rapidly, so that radiation performance of the valve is increased, and temperature can be reduced by about 100 DEG C; besides, the specific gravity of the metal sodium is 0.97 g/cm<3>, so that the weight of the valve is reduced, the mass of the valve is lowered, movement physical quantity correlated with the mass of the valve is reduced correspondingly, and the work performance of the valve is better; furthermore, the valve disclosed by the invention is strong in rigidity and hardly bent.

Description

Technical field [0001] The invention relates to a valve, in particular to a valve filled with sodium in a hollow space, and belongs to the technical field of pneumatic vehicle parts. Background technique [0002] With the development of internal combustion engines in the direction of adjusting high loads, the working temperature of the valve is getting higher and higher, and the working temperature of the exhaust valve is up to 850-900 degrees. The traditional valve can no longer meet the requirements of the internal combustion engine. In order to solve the above technical problems, recently, in order to make the valve can withstand higher temperature during the production of the valve, austenitic material is used in the disc and partial rods of the valve, and the cone surface is welded with cobalt-based alloy. The high temperature resistance, oxidation resistance and corrosion resistance of the valve have been greatly improved, but the structure of the valve at high temperature,...

Claims

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Application Information

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IPC IPC(8): F01L3/14
Inventor 汪如怀
Owner 江苏欧尔特气门有限公司
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