Method for reducing friction between piston and cylinder wall of internal-combustion engine, and Oil saving piston

Abstract

The invention provides a method for reducing the friction between the piston and the cylinder wall of an internal combustion engine, comprising the following steps: (a) constantly guiding the lubricating oil to flow to the surface of the piston skirt through the through hole provided on the piston skirt during the movement of the piston and (b) storing lubricating oil in the groove provided on the piston skirt and the non-through hole of the piston skirt, so that a sufficient amount of lubricating oil is always applied between the cylinder wall of the internal combustion engine and the surface of the piston skirt lubricating oil, and isolate the metal contact between the cylinder wall and the piston skirt, and finally reduce the friction between the piston skirt and the cylinder wall, reduce the internal combustion engine friction work loss, heat power consumption, and improve the internal combustion engine Higher power output, lower fuel consumption, noise and emissions. To achieve the dual benefits of fuel saving and environmental protection. In order to achieve the purpose of the method and steps for reducing the friction between the piston and the cylinder wall of the internal combustion engine, the invention provides a fuel-saving piston of the internal combustion engine, the piston comprising: a piston skirt, a piston skirt wall, and a piston ring. A plurality of grooves are formed in the piston skirt, a plurality of through holes are formed in the piston skirt, and a plurality of non-through holes are formed in the piston skirt. The piston skirt groove provides storage lubricating oil, the piston skirt through hole provides supply lubricating oil, and the piston skirt non-through hole provides storage lubricating oil. The present invention can be widely applied to: internal combustion engines, including vehicles, ships, tanks, generators, mining machinery, compressors and the like. The fuel saving effect and environmental protection benefit are very remarkable.

Description

Technical field: [0001] The invention relates to a piston of an internal combustion engine. In particular, it relates to a method and a step for reducing the friction between a piston and a cylinder wall of an internal combustion engine and a fuel-saving piston of an internal combustion engine for realizing the method and the step. Background technique [0002] The piston is the "heart" of the internal combustion engine, which bears alternating mechanical loads and thermal loads, and is one of the key components with the worst working conditions in the internal combustion engine. The function of the piston is to withstand the gas pressure and transmit it to the connecting rod through the piston pin to drive the crankshaft to rotate. The piston works under the conditions of high temperature, high pressure and high speed. Therefore, it is severely heated, and due to the inherent characteristics of the structure, the heat dissipation conditions are poor. When the piston works ...

AI Technical Summary

Problems solved by technology

The disadvantage is that part of the peripheral surface of the above-mentioned piston is close to the inner surface of the cylinder. As the closest position is moved along the circumferential direction, the gap between the piston and the cylinder becomes larger, and the oil held in the groove of the piston skirt is pushed to both sides of the groove. , reducing the amount of lubricating oil held in the groove

The disadvantage is that the area of ​​the piston skirt is small, which cannot guarantee the stability of the piston movement and increases the vibration and noise of the engine.

Its disadvantage is that the lubricating oil cannot reach the piston skirt quickly, but splashes to the cylinder wall through the high-speed operation of the engine.

When the piston descends, the sharp edge of the lower edge of the piston skirt will remove most of the lubricating oil existing on the cylinder wall, resulting in a decrease in the oil film area between the piston skirt and the cylinder wall, resulting in poor lubrication

So, there is room for improvement

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