Measurement of Fuel Injector Spray Flow of I.C. Engine by FFT Based Phase Doppler Anemometer-An Approach to the Time Series Measurement of Size and Velocity
Measurement of Fuel Injector Spray Flow of I.C. Engine by FFT Based Phase Doppler Anemometer-An Approach to the Time Series Measurement of Size and Velocity
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I.C.喷油器喷雾流量的测量
DOI：
10.1007/978-3-642-61254-1_14
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
M. Maeda
中科院分区：
文献类型：
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作者：
K. Kobashi;K. Hishida;M. Maeda
研制了一种用于相位多普勒风速测量（PDA）的大容量存储信号处理器。由高速A/D转换器、大容量存储器和计算机组成的软件信号处理器使系统能够同时测量液滴的速度、大小、颗粒通量，并评估结果及其相关性。在大多数情况下，一定数量的存储器为一次喷雾剂注射的测量提供满意的信息。研究和讨论了几种触发（突发检测）类型，以提高处理器处理噪声信号的性能。超声波加湿器对浓雾流的测量显示，数据速率超过每毫秒10个颗粒。对内燃机喷油器的流场进行了尺寸和速度测量，以假燃料为例进行了间歇喷雾流的测量。测量结果与激光平面片同时显示的流型相吻合。
A Signal processor with a capacious memory for Phase-Doppler Anemometry (PDA) has been developed to measure intermittent spray flows. The software signal processor which consists of high speed A/D converters, large memories and computers makes the system versatile to measure velocity, size, particle flux of droplets simultaneously and evaluating the results and their correlations. In most case, a certain amount of memory provides a satisfactory information for the measurement of one injection of sprays. Several types of triggering (burst detection) were examined and discussed to improve the performance of the processor for noisy signals. A measurement of a dense mist flow by a supersonic humidifier showed the data rate of over 10 particles per millisecond. Sizing and velocity measurements are carried out for a flow field of a fuel injector of IC engines using a dummy fuel as an example of intermittent spray flows. The measured results were in accordance with the simultaneously visualized flow patterns by laser plane sheet.