Real-time metering method for dynamic flow of natural gas injector

被引：0
|
作者：
Peng Y. [1 ]
Wu Z. [1 ]
Chen X. [1 ]
Huang Y. [2 ]
机构：
[1] School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou
[2] Fujian Lijia Co., Ltd., Zhangzhou
来源：
Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | 2018年 / 39卷 / 06期
关键词：
Calibration; Double buffer tank; Dynamic flow; Metering; Natural gas injector;
D O I：
10.19650/j.cnki.cjsi.J1702078
中图分类号：
学科分类号：
摘要：
The dynamic flow metering for natural gas injector provides the basis for accurate supply of natural gas for diesel/natural gas dual-fuel engines. According to the measuring principle of differential pressure flow-meter and the possible reasons resulting in pressure pulsation of natural gas supply, main factors affecting the measurement accuracy of flow-meter are analyzed. A scheme of natural gas supply for double buffer tank device is proposed. Then, under two kinds of natural gas supply schemes, flow metering models for natural gas injector are established by use of AMESim software. The effect of pipeline pressure pulsation on the flow of injection valve is researched. Moreover, the simulation results demonstrate that the maximum pressure difference of the injector with the double buffer tanks is 90% lower than that of the ordinary supply system, and the relative deviation of the mean value is reduced by 74.3%. Through building the test platform, experimental results clearly evidence that the natural gas supply system with double buffer tanks significantly improves the injector's stability and the metering precision of the dynamic flow. © 2018, Science Press. All right reserved.
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页码：11 / 17
页数：6
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