Investigation of Main Injection Quantity Fluctuation due to Pilot Injection in High Pressure Common Rail Fuel Injection System

被引：0
|
作者：
Tian Bingqi [1 ]
Fan Liyun [1 ]
Ma Xiuzhen [1 ]
Hayat, Qaisar [1 ]
Bai Yun [1 ]
Liu Yang [1 ]
机构：
[1] Harbin Engn Univ, Sch Power & Energy Engn, Harbin, Heilongjiang, Peoples R China
来源：
INTERNATIONAL JOURNAL ON SMART SENSING AND INTELLIGENT SYSTEMS | 2014年 / 7卷 / 02期
基金：
中国国家自然科学基金;
关键词：
High pressure common rail; Numerical model; Pilot-main injection; Main injection quantity; Pilot-main interval;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
High pressure common rail (HPCR) fuel injection system is the main development trend for fuel injection system of diesel engine. Precise controlling of injection pressure and multiple injections are the advantages and key features of the HPCR system. Affect of pilot injection quantity (PIQ) and pilot-main interval (PMI) on main injection quantity fluctuation (MIQF) has been investigated in this paper by evaluating performance coherence and stability of injection quantity of diesel engine. A numerical model of HPCR system has been development in AMESim environment. Predicting accuracy of the numerical model has been validated by comparing its results with experimental data. The results show that the pilot injection triggers pressure cyclical fluctuation in the electro-injection delivery chamber and gives rise to MIQF. Amplitude of MIQF decreases with increase of PMI and increase with increase of PIQ. Moreover, variation of PIQ has also influence on both the amplitude and the phase of MIQF. Influence of MIQ on amplitude of MIQF depends on how many pressure fluctuation cycles have been incorporated in the main injection.
引用
收藏
页码：820 / 836
页数：17
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