Computation of pressure fluctuation frequency in electronic unit pump for diesel engine

被引：0
作者：
Tian Bingqi
Fan Liyun
Qaisar Hayat
Ma Xiuzhen
Song Enzhe
Hao Wang
机构：
[1] Harbin Engineering University,College of Power and Energy Engineering
来源：
Journal of Mechanical Science and Technology | 2014年 / 28卷
关键词：
EUP; Pressure fluctuation; Frequency; LC undamped hydraulic model;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Pressure variations inside a fuel injection system can lead to fluctuations in injected fuel quantity during injections and therefore can directly impact the stability and performance coherence of the fuel injection system and the engine it matched. Concepts of hydraulic capacitance and hydraulic inductance are introduced into fuel injection system by referencing LC oscillator electric circuit. A LC undamped hydraulic mathematical model is developed based on the structural parameters of the electronic unit pump (EUP). Pressure fluctuation frequency during injection process at different operating conditions of the EUP is computed by the LC undamped model. It is observed that the frequencies of pressure fluctuations tend to increase with the fuel injection process. Pressure curves and pressure fluctuation frequencies obtained by experiments at different operating conditions validated the results predicted by the LC undamped mathematical model.
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收藏
页码：1529 / 1537
页数：8
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