论文部分内容阅读
凸轮、随动件、泵和挺杆的负荷问题是高强化发动机经常遇到的问题。主要参数有赫兹应力、弹性运动趋势和凸轮轮廓形状。不断增长的速度、管路压力和喷射率给泵零件的设计带来了较大的变化,在这篇文章中,论述了柱塞和套筒材料及其它们的缺陷。液压方面的考虑决定了燃油泵送油阀的设计,其主要机械方面的问题是疲劳故障。重新设计的阀件能够承受管路高压所要求增大了的夹紧力和密封所产生的负荷。本文中讲述了引起输油管破裂的原因及其预防方法。在装配喷油器时,主要机械方面的问题有运动部件的惯量、弹性应力、密封等。至于未来的设计,对于传统的伸缩泵来说有无液压极限和机械限制呢?如果有,那又用什么来代替呢?
Load issues with cams, followers, pumps and tappets are a common problem with highly engineered engines. The main parameters are Hertzian stress, elastic movement tendency and cam contour shape. The ever-increasing speed, line pressure and injection rate have brought great changes to the design of pump parts. In this article, the plunger and sleeve materials and their defects are discussed. Hydraulic considerations determine the design of the fuel pump valve, the main mechanical problems is fatigue failure. The redesigned valve is able to withstand the increased clamping force and sealing load required by high line pressures. This article describes the causes of pipeline rupture and its prevention methods. In the assembly of the injector, the main mechanical problems are the inertia of moving parts, elastic stress, sealing and so on. As for the design of the future, for the traditional telescopic pump for hydraulic limit and mechanical limit it? If so, then what to replace?