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Experimental and numerical study on the effects of the solenoid valve motion on the fuel pressure fluctuations for electronic unit pump systems of diesel engines

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Abstract

For electronic unit pump systems, it is an advantage for online combustion analysis and fault diagnosis to ascertain the relationship between the fuel pressure fluctuation and the movement of the solenoid valve. We experimentally and numerically investigated the fuel pressure characteristics and their connection to the transient motion of the solenoid valve. Four fuel pressure characteristic points corresponding to the start of closing time, the fully closed time, the start of opening time and the fully opened time of the solenoid valve were determined on the fuel pressure curve. A novel method was proposed to predict the solenoid valve displacement curve based on the four fuel pressure characteristic points. The validation results show that the displacement curves of the prediction and experiment are almost coincident, and the relative error of the injection quantity per cycle between the simulation and experiment is within 3 %.

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Authors and Affiliations

  1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China

    Fushui Liu, Ning Kang, Pei Wang & Yikai Li

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  1. Fushui Liu
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  2. Ning Kang
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  3. Pei Wang
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  4. Yikai Li
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Corresponding author

Correspondence to Yikai Li.

Additional information

Recommended by Associate Editor Hanho Song

Yikai Li received his Bachelor’s and Master’s degrees in Thermo-physics Engineering from Beijing University of Aeronautics and Astronautics, China, in 2008 and 2010, respectively. He received his Ph.D. in Aerospace Engineering from Nagoya University, Japan, in 2014. He has been a lecturer at Beijing Institute of Technology since 2015. His research interests include numerical techniques for simulating liquid-gas flows and the mechanisms of hydrodynamic instabilities.

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Liu, F., Kang, N., Wang, P. et al. Experimental and numerical study on the effects of the solenoid valve motion on the fuel pressure fluctuations for electronic unit pump systems of diesel engines. J Mech Sci Technol 31, 5545–5556 (2017). https://doi.org/10.1007/s12206-017-1049-5

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  • DOI: https://doi.org/10.1007/s12206-017-1049-5

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