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首页> 外文会议>SAE World Congress and Exhibition >Analysis of Variations in Fuel Spray, Combustion, and Soot Production in an Optical Diesel Engine Operating Under High Simulated Exhaust Gas Recirculation Operating Conditions
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Analysis of Variations in Fuel Spray, Combustion, and Soot Production in an Optical Diesel Engine Operating Under High Simulated Exhaust Gas Recirculation Operating Conditions

机译：高模拟废气再循环操作条件下光学柴油发动机中燃料喷涂，燃烧和烟灰产生的变化分析

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In-cylinder visualization experiments were completed using an International VT275-based optical DI Diesel engine operating under high simulated exhaust gas recirculation combustion conditions. Experiments were run at four load conditions to examine variations in fuel spray, combustion, and soot production. Mass fraction burned analyses of pressure data were used to investigate the combustion processes of the various operating conditions. An infrared camera was used to visualize fuel spray events and exothermic combustion gases. A visible, high-speed camera was used to image natural luminosity produced by soot. The recorded images were post-processed to analyze the fuel spray, the projected exothermic areas produced by combustion, as well as soot production of different load conditions. Probability maps of combustion and fuel spray occurrence in the cylinder are presented for insight into the combustion processes of the different conditions. From the analysis presented in this paper, it is observed that, as load is increased, different combustion patterns occur, leading to differences in the patterns of combustion and where soot is produced.
机译：在高模拟废气再循环燃烧条件下运行的基于International VT275的光学DI柴油发动机完成了缸内可视化实验。实验在四个负载条件下运行，以检查燃料喷雾，燃烧和烟灰产生的变化。使用压力数据的质量分数燃烧分析来研究各种操作条件的燃烧过程。红外相机用于可视化燃料喷雾事件和放热燃烧气体。可见的高速相机用于通过烟灰产生的自然亮度。被录制的图像进行后处理以分析燃油喷雾，所以通过燃烧产生的投影放热区域，以及不同负载条件的烟灰产生。提出了汽缸中的燃烧和燃料喷射发生的概率图，以了解不同条件的燃烧过程。根据本文提出的分析，观察到，随着负载增加，发生不同的燃烧模式，导致燃烧模式和产生烟灰的差异。

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