• Vo Tan Chau Faculty of Automotive Engineering Technology, Industrial University of Ho Chi Minh City (IUH), 12 Nguyen Van Bao Street, Go Vap District, Ho Chi Minh City, Vietnam https://orcid.org/0000-0003-3113-6923
  • Tran Dang Long Faculty of Transportation Engineering, Ho Chi Minh City University of Technology (HCMUT)-268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
  • Huynh Ba Vang Faculty of Transportation Mechanical Engineering, The University of Da Nang, University of Science and Technology, 50000, Vietnam
  • Nguyen Minh Hoang Faculty of Automotive Engineering Technology, Industrial University of Ho Chi Minh City (IUH), 12 Nguyen Van Bao Street, Go Vap District, Ho Chi Minh City, Vietnam
  • Ngo Hong Phuc Faculty of Automotive Engineering Technology, Industrial University of Ho Chi Minh City (IUH), 12 Nguyen Van Bao Street, Go Vap District, Ho Chi Minh City, Vietnam
  • Nguyen Quoc Sy Faculty of Automotive Engineering Technology, Industrial University of Ho Chi Minh City (IUH), 12 Nguyen Van Bao Street, Go Vap District, Ho Chi Minh City, Vietnam




Common-rail system, diesel engine, injection rate characteristics, zuech’s method, solenoid injector


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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How to Cite

Chau, V. T., Long, T. D., Vang, H. B., Hoang, N. M., Phuc, N. H., & Sy, N. Q. . (2023). A STUDY ON THE INJECTION RATE CHARACTERISTICS OF THE SOLENOID COMMON-RAIL INJECTOR UNDER USING A HIGH-PRESSURE FUEL SYSTEM. Jurnal Teknologi, 85(3), 25-33. https://doi.org/10.11113/jurnalteknologi.v85.19106



Science and Engineering