Effect of High-Pressure Tube Structure on Injection Rate

JIA Yi; JIA Demin; WANG Xiaoyan; ZHANG Haiyan; WANG Junliang

doi:10.3969/j.issn.1001-2222.2024.03.007

Vehicle Engine ›› 2024, Vol. 0 ›› Issue (3) : 42-45. DOI: 10.3969/j.issn.1001-2222.2024.03.007

Effect of High-Pressure Tube Structure on Injection Rate

JIA Yi，JIA Demin，WANG Xiaoyan，ZHANG Haiyan，WANG Junliang

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Abstract

In order to explore the effect of high-pressure tube structure on injection rate, the injection rate tests were carried out on EFS injection rate test bench based on different high-pressure tube lengths, bending radiuses and inner diameters. The test results show that the pressure fluctuation inside highpressure tube has a significant effect on the injection rate, and the injection rate will warp up at large injection pulse width so as to lead to an increase of injection quantity. The structural parameters of high-pressure tube have different influencing forms on the injection rate. The length of high-pressure tube mainly affects the upwarping timing of injection rate, the inner diameter mainly affects the value of injection rate and the peak of upwarping, and the bending radius has almost no influence on the injection rate.

Key words

high-pressure tube / injection rate / injection pulse width / pressure fluctuation / injection quantity

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JIA Yi，JIA Demin，WANG Xiaoyan，ZHANG Haiyan，WANG Junliang. Effect of High-Pressure Tube Structure on Injection Rate[J]. Vehicle Engine. 2024, 0(3): 42-45 https://doi.org/10.3969/j.issn.1001-2222.2024.03.007