Decoupling Analysis on Pressure Fluctuation and Needle Valve Response for High Pressure Common Rail Injector

被引：2
|
作者：
Wang Hao [1 ]
Zhao Dongchang [1 ]
Lv Wang [1 ]
机构：
[1] China Automot Technol & Res Ctr, Automot Data Ctr, Tianjin 300300, Peoples R China
来源：
2017 INTERNATIONAL CONFERENCE ON MECHANICAL, AERONAUTICAL AND AUTOMOTIVE ENGINEERING (ICMAA 2017) | 2017年 / 108卷
关键词：
D O I：
10.1051/matecconf/201710804011
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the process of multiple injections, the influence of different injections makes the controlling of cycle fuel injection quantity more difficult. The high pressure common rail (HPCR) simulation model is established in AMESim environment. Through the method of combining numerical simulation and experiment test, it is found that the strong coupling of pressure fluctuation and needle valve response is the fundamental reason, which leads to the fluctuation of main injection fuel quantity (MIFQ) with dwell time (DT). The result shows that the largest fluctuation quantity is 3.6mm3 when the reference value of main injection is 60.0mm3. Non-damping LC hydraulic system model is also established. Through the analysis of the model, reducing the length-diameter ratio of internal oil duct and the delivery chamber volume are decoupling methods to the strong coupling.
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页数：5
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