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循环模拟计算机程序的使用,已成为涡轮增压柴油机研究和发展不可少的组成部分。但以往这些程序的应用,受到工作点燃烧数据资料的限制。通过以经验关系式模拟燃烧过程(放热)的研究,克服了这个困难。这种模拟是通过其控制参数与气缸内工况相关联的分析表达式来实现的。 本文提出了一种仅以最低限度的试验数据来推导控制参数的方法,但能在很宽广的工况范围预估性能。 使用燃烧关系式,能自动预估改变环境条件、涡轮增压器匹配、气门定时和其它发动机结构参数的影响,以及这些参数对燃烧以及涡轮增压过程的影响。
The use of cyclic simulation computer programs has become an integral part of the research and development of turbocharged diesel engines. However, the application of these programs in the past was limited by the data of the working point burning. This problem has been overcome by studying the combustion process (exothermic) in empirical relationships. This simulation is achieved through the analysis of expressions whose control parameters are associated with cylinder operating conditions. In this paper, a method of deriving control parameters using only a minimum of experimental data is proposed, but the performance can be estimated over a wide range of operating conditions. Using combustion relationships, the effects of changing ambient conditions, turbocharger matching, valve timing, and other engine structural parameters can be automatically predicted, and how these parameters affect combustion and turbocharger processes.