| The tribophysics of the cylinder liner—piston rings in an internal combustion engine is a typical tribological system with the reciprocating motion and the impacting motion. The lubrication effect of cylinder liner—piston rings in an internal combustion engine directly influences its function, usage life, release of pollution and so on. The engine cylinder is one set of an important component as this systems, Which had been concerded all times. Many researchers have been engaged in improving the performance of cylinder all the time in order to reach this effect of diminution friction and enhancing lubricating.The thesis have studied the surface oil storage structure of various cylinder, and have found out the superiority of tiny-pits structure. Through the method of the vibration scraping of low frequency, we have made oil storage structure with tiny-pits in the motorcycle cylinder. First, the lubrication and wear-resisting mechanism of the surface with regular micro-structure is studied and the correspoding lubricated theory model is also developed. And then, use finite difference method and SOR method to Solve the model cylinder wall surface micro geometry shape parameters are designed. At last, Through tiny-pits shaping device, which is in cylinder surface form separate, uniform distribution, taking the form of honeycomb in tens of thousands of some holes inside, The bench tests show the abrasion of the cylinder and piston rings, the lubrication consumption and particulate emission can be reduced. Form the point of cylinder surface Treatment, it is imperative reticulated structure is substituted by tiny-pits surface. |
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