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在优化柴油机性能方面,模拟计算结果的正确性在很大程度上取决于程序对异常工作状态的描述方法。柴油机的实际性能往往与模型计算结果存在差异,这常常是由于设计师对使用现场的条件不够熟悉和对故障机理缺乏了解。计算模型的改进不能解决全部问题,分析与故障机理有关的使用环境条件,确实具体的边界条件,可以提高对柴油机性能的预测能力,这就要求设计师掌握大量而详尽的实践信息。而柴油机性能预测能力的提高又能使人们更准确地评价并维持柴油机的性能。柴油机出现异常工作状态的主要原因,往往是增压器性能不良和燃烧过程的恶化。本文介绍在计算模型中考虑这些有害因素的方法。在对引起柴油机工作状态恶化的原因加深理解之后,本文还将对限制柴油机性能发挥的某些重要零部件,(例如排气门)的影响展开讨论。轴承性能研究是另一项难以对其大量描述参数加以定量分析的课题,其损坏机理目前也不十分清楚。为加深对该问题的认识,本文还将对最近开发的计算模型与铀承损坏形式之间的联系进行讨论。最后,本文还将讨论本公司采用的现场运用柴油机产品信息控制系统,利用该系统可以加强与用户的联系,以取得更多有关本公司柴油机异常工作状态的信息。
The correctness of the simulation results in optimizing the performance of a diesel engine depends to a large extent on how the program describes the abnormal operating conditions. The actual performance of a diesel engine often differs from the model calculation, often due to the designer’s lack of familiarity with the conditions at the site of use and lack of understanding of the failure mechanism. The improvement of the calculation model can not solve all the problems and the analysis of the operating conditions related to the failure mechanism. Indeed, the specific boundary conditions can improve the ability to predict the performance of the diesel engine, which requires the designer to have a large amount of detailed and practical information. The improvement of diesel engine performance prediction ability can make people more accurately evaluate and maintain the performance of diesel engine. The main reason for the abnormal working condition of the diesel engine is often the poor performance of the supercharger and the deterioration of the combustion process. This article describes ways to consider these harmful factors in a computational model. After gaining a deeper understanding of the causes of diesel engine deterioration, this article will also discuss the impact of limiting certain important components of diesel engine performance, such as exhaust valves. Research on bearing performance is another subject that is difficult to quantitatively analyze a large number of its parameters, and the mechanism of damage is not very clear at present. In order to deepen our understanding of this issue, we will also discuss the link between the recently developed computational model and the uranium bearing forms of damage. Finally, this article will also discuss the on-site use of diesel engine product information control system used by the company, the use of the system can enhance the contact with the user to get more information about the abnormal working conditions of the Company’s diesel engine.