A STUDY ON THE INJECTION RATE CHARACTERISTICS OF THE SOLENOID COMMON-RAIL INJECTOR UNDER USING A HIGH-PRESSURE FUEL SYSTEM

IF 0.6 Q3 ENGINEERING, MULTIDISCIPLINARY Jurnal Teknologi-Sciences & Engineering Pub Date : 2023-04-19 DOI:10.11113/jurnalteknologi.v85.19106

Vo Tan Chau, Tran Dang Long, Huynh Ba Vang, N. M. Hoang, N. Phuc, Nguyen Quoc Sy

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Abstract

The combustion of diesel engines is mainly controlled by fuel injection. Determining the fuel injection flow rate combined with the common-rail fuel injection system is a key solution to effectively improve engine performance and exhaust emissions. This work aims to investigate the influence of high injection pressures with a 6-holes-solenoid common rail injector on the injection rate characteristics in the range of 400 bar to 1600 bar, and a constant injector energizing time of 1.5 ms. The injection rate characteristics were carried out based on the pressure difference in the Zuech measuring chamber and synchronized data in real-time. The results showed that the increase of the mentioned injection pressures caused the decrease of hydraulic injection delay from 0.5 ms to 0.25 ms and expansion of the injector opening angle profile. In addition, the actual opening injection interval was prolonged as compared to the injector control signal. An increasing trend of fuel discharge coefficient was realized as higher injection pressure.

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高压燃油系统下电磁共轨喷油器喷射速率特性研究

柴油机的燃烧主要由燃油喷射控制。确定燃油喷射流量与共轨燃油喷射系统相结合是有效改善发动机性能和废气排放的关键解决方案。本研究旨在研究6孔螺线管共轨喷油器在400 ~ 1600 bar范围内高喷射压力对喷油器喷射速率特性的影响，且喷油器通电时间为1.5 ms。根据Zuech测量室内的压差和实时同步数据进行注射速率特性分析。结果表明，上述喷射压力的增加使液压喷射延迟从0.5 ms减小到0.25 ms，喷油器开角轮廓增大;此外，与喷油器控制信号相比，实际开启喷射间隔延长。喷油压力越高，燃油流量系数越高。

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来源期刊

Jurnal Teknologi-Sciences & Engineering ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.30

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0.00%

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