Estimation of the Optimum Combination of Combined Power Systems with a Diesel Engine by means of numerical Simulation

数值模拟估算柴油机联合电力系统的最佳组合

• 批准号: 63850045
• 负责人: SHIMAMOTO Yuzuru
• 金额: $ 2.24万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-63850045/
• 关键词: Performance Prediction; Simulation of Compound Engine; Intake and Exhaust Systems; Power System; Three-Dimensional Flow Analysis; 過給機関のシミュレーション; 最適化

Methods for numerically predicting the optimum combinations have been investigated for the power systems, in which diesel engines, gas turbines, heat exchangers and others are included. Also studies have been carried out for estimating the optimum engine components in order to improve the performance of diesel engines. The results obtained are as follows. 1. A simulation program for predicting the performance of combined power systems has been nearly completed. This program can predict the optimum combinations of a diesel engine, turbochargers, gas turbines, after burners, heat exchangers and others to improve the total thermal efficiency of combined power systems, although the usefulness of the program is yet to be confirmed through the comparison with the experimental results.2. A method which treats simply the compressor or the turbine of turbocharters as an equivalent throttle area has been suggested. This equivalent area can use as an evaluating parameter, since it is not affected by engine speed. Furthermore a new turbocharging system - two turbine and one compressor are mounted on a common shaft and a waste gate valve is equipped between two turbines - is suggested. This 2TIC turbocharged engine shows suitable performances for transient and steady states.3. A practical program for calculating the three-dimensional unsteady gas flows in intake ports has been developed.

研究了柴油机、燃气轮机、换热器等动力系统最优组合的数值预测方法。为了改善柴油机的性能，还开展了估算最佳发动机部件的研究。取得的结果如下。1.用于预测组合电力系统性能的仿真程序已基本完成。该程序可以预测柴油机、涡轮增压器、燃气轮机、加力燃烧室、换热器等的最佳组合，以提高联合动力系统的总热效率，但该程序的有效性还有待于通过与实验结果的比较来证实。提出了一种将涡轮室的压气机或涡轮简化为等效节流区的方法。这个等效面积可以用作评估参数，因为它不受发动机转速的影响。此外，还提出了一种新的涡轮增压系统，即两个涡轮和一个压气机安装在一个共轴上，并在两个涡轮之间安装一个废气闸阀。该2TIC涡轮增压发动机具有较好的过渡和稳态性能。编制了一个实用的计算进气道内三维非定常气流的程序。

项目成果

Yuzuru SHIMAMOTO: "The Numerical Prediction of Gas Flow in the Intake Ports of Four-Cycle Internal Combustion Engines (2nd Report, Comparing with Experimental Results and Predicting the Effect of the Intake Port Configuration)" Trans. Japan Soc. Mech. Eng

Yuzuru SHIMAMOTO：“四冲程内燃机进气口气体流量的数值预测（第二次报告，与实验结果比较并预测进气口配置的效果）”Trans。

Yuzuru SHIMAMOTO: "Investigation of Swirl Generating Characteristics of Helical Ports by Numerical Simulation" Proceedings of International Symposium on Diagnostics and Modeling of Combustion in Internal Combustion Engines (COMODIA 90), 1990.

Yuzuru SHIMAMOTO：“通过数值模拟研究螺旋端口的涡流生成特性”内燃机燃烧诊断和建模国际研讨会论文集 (COMODIA 90)，1990 年。

一色美博: "多シリンダ機関における吸入特性の数値予測" 第8回内燃機関合同シンポジウム講演論文集. 225-230 (1990)

Yoshihiro Isshiki：“多缸发动机吸力特性的数值预测”第八届内燃机联合研讨会论文集225-230（1990）。

Yuzuru SHIMAMOTO: "The Numerical Prediction of Gas Flow in the Intake Ports of Four-Cycle Internal Combustion Engines (4th Report, Improving the Treatment of the Valve Outlet Boundary)" Trans. Japan Soc. Mech. Engrs., Ser. B. Vol.56, No.522, 1990.

Yuzuru SHIMAMOTO：“四冲程内燃机进气口气体流量的数值预测（第四次报告，改进阀门出口边界的处理）”Trans。

嶋本譲: "三次元流動解析によるヘリカルポ-ト形状の影響予測" 自動車技術会論文集. 40. 18-25 (1989)

Yuzuru Shimamoto：“通过三维流动分析预测螺旋端口形状的影响”日本汽车工程师学会会刊 40. 18-25 (1989)。