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Current and advanced design concepts for high power-density, mid-range truck diesel engines - Part II: the development of advanced design process for combustion system optimization

机译:高功率密度,中档卡车柴油发动机的电流和先进的设计概念 - 第二部分:燃烧系统优化先进设计过程的开发

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Part I provides a review of present designs, advanced concepts and technologies needed for the next generation of high power density diesels for mid-range truck application. Part II emphasizes the use of advanced computational tools to determine the most promising design parameters for high power density diesels which are suitable for truck application. Three types of analyses are reviewed and deemed necessary for design optimization at high power density conditions, these include: I. High BMEP cycle analysis based on zero-dimensional thermodynamic analysis and engine similarity rules. II. Matching of advanced turbocharging systems for high torque rise engines. III. Multi-dimensional in-cylinder computational combustion fluid dynamics (CCFD). This analytical exercise indicates that computational tools are capable of rationalizing experimental results and therefore predicting engine performance in the conceptual stage. We believe the objectives of developing "best-in-class," mid-range truck diesel are attainable by further development of the advanced design concepts and advanced technologies described in Part I and by using the advanced computational tools described in Part II of this paper.
机译:第一部分提供了对中档卡车应用的下一代高功率密度柴油所需的目前设计,高级概念和技术。第二部分强调使用先进的计算工具,以确定适用于卡车应用的高功率密度柴油机最有希望的设计参数。在高功率密度条件下进行审查和视为设计优化所需的三种分析,其中包括:I。基于零维热力学分析和发动机相似性规则的高BMEP循环分析。 II。高级涡轮增压系统对高扭矩上升发动机的匹配。 III。多维缸内计算燃烧流体动力学(CCFD)。该分析练习表明计算工具能够合理化实验结果,从而预测概念阶段的发动机性能。我们相信开发“阶级最佳”中距离卡车柴油的目标是通过进一步发展第一部分中描述的先进设计概念和先进技术以及本文第II部分中描述的先进计算工具来实现的。

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