| The motion part of all kinds of machine in the world, such as cylinder wall,piston, head of die-casting machine,crank, sliding bearing and soon, theirworking surface is on the condition of motion and function by each other. So,friction and wear is inevitable, and wear will make the mechanical instrumentefficiency lower, the working part changing and maintaining oftener, energyconsuming higher. It is the main reason lead to the unworn of machine and loss ofmoney. In industrial country, thirty percent energy was consumed by friction loss.And the wear produced by friction is the main reason of machine's effectiveness.About eighty percent of parts were damaged by wear. To improve the internal combustion engine's reliability, educability andtrouble is an important research direction of the technology development of IC.Piston and cylinder wall is an important wear pairs. Their working life directlyaffects the working life and reliability of IC. It is very meaningful to improve thefriction and wear between piston and cylinder wall in order to improve the IC'sworking ability. To decrease the friction and wear between piston and cylinderwall system, author do R&D based on the former country key research project(bionic ally non-smooth base theory 2002CCA01200), science fund emphasesproject (ground machine doff conglutinate allay resistance bionics technology59835200), the fifteenth country science project (the development of EFI motorcycle with LPG fuel 2003BA408B09A) and the JiLin University new innovationfoundation project (the Research of Cold Start and Warm Phase Emission OnSmall Ignition LPG engine). The author made use of work bionics technology,developed a new method of making the friction and wear between IC's pistol andcylinder wall lower on the condition of such lubrication from the model testing,theory analyses, simulation calculate and experiment. The research of this article is original innovation. Four national patents wereapplied during the research. Bionic unsmooth lower the friction and weartechnology is absolutely our national knowledge right. It was found by JiLinUniversity first, then was researched on theory and made in applicationtechnology. Some others research institute just pay attention to this technology in 111our nation also. Overseas country, such as British, also developed just now. The author made use of bionic principle to design five kinds of bionicunsmooth experiment sample. From sample test, we did dry friction experiment,part lubrication experiment, full lubrication experiment on five unsmooth andcomparatively plat structure, and researched every sample's relation betweenfriction coefficient, wear ration and load, lubrication condition. The reason makethe difference of all kinds of structure was analyzed, and the rule of bionicunsmooth part was optimized. From the sample test, we found: On dry lubrication condition, smooth and unsmooth structure's frictionability is almost same. With the load's adding, friction coefficient decrease, wearration increase. With the load and distance of friction's adding, the status offriction changes from slightly scratch to agglutination. On part lubrication condition, all kinds of unsmooth structure had lowerfriction and more anti-wear ability than smooth structure. The best structureshave more 4 times anti- agglutination distance and less 77% friction energy lossthan smooth structure. From the experiment, type D C and F was closed as thebest friction ability structure. On full lubrication condition, all kinds of unsmooth structure had betteradvantage on load ability than smooth structure. The best structure had more anti-agglutination 85% than smooth structure. The type F is selected as the bestfriction ability structure. Status of lubrication: with the load's adding, friction coefficient decrease,wear ratio increas... |
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