TY - JOUR
T1 - Inhibition of pressure fluctuation and multi-injection fuel mass deviation in high pressure common rail system
AU - Meng, Yu Bo
AU - Li, Pi Mao
AU - Zhang, You Tong
AU - Wang, Zhi Ming
N1 - Publisher Copyright:
© 2018, Editorial Board of Jilin University. All right reserved.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - Pressure fluctuation in high pressure common rail has great influence on injection quantity deviation of multiple injections. To eliminate the pressure fluctuation at the inlet of the injector, a new damping filter with damping hole and vessel to inhibit pressure fluctuation is studied. Through the uniform design method, it is found that the amplitude of pressure fluctuation is the minimum when the damping hole diameter is 0.4 mm and volume of the cavity is 1720 mm3. Based on this, experiments are conducted to verify the filter performance under different rail pressure and control strategy of multi-injection. Results show that, when the common rail pressures are 40, 60 and 100 MPa, respectively, the filter can decrease the amplitude of pressure fluctuation by 51% to 54% under single injection with a pulse width of 0.4 ms. In pre-injection mode, the filter can decrease the fluctuation amplitude of fuel injection quantity by 62.4% to 715. In main-post mode, accordingly, it can be reduced by 86% to 86.3%. Therefore, the filter can suppress fuel quantity deviation and provide reference to optimize the control precision of the common rail fuel injection system.
AB - Pressure fluctuation in high pressure common rail has great influence on injection quantity deviation of multiple injections. To eliminate the pressure fluctuation at the inlet of the injector, a new damping filter with damping hole and vessel to inhibit pressure fluctuation is studied. Through the uniform design method, it is found that the amplitude of pressure fluctuation is the minimum when the damping hole diameter is 0.4 mm and volume of the cavity is 1720 mm3. Based on this, experiments are conducted to verify the filter performance under different rail pressure and control strategy of multi-injection. Results show that, when the common rail pressures are 40, 60 and 100 MPa, respectively, the filter can decrease the amplitude of pressure fluctuation by 51% to 54% under single injection with a pulse width of 0.4 ms. In pre-injection mode, the filter can decrease the fluctuation amplitude of fuel injection quantity by 62.4% to 715. In main-post mode, accordingly, it can be reduced by 86% to 86.3%. Therefore, the filter can suppress fuel quantity deviation and provide reference to optimize the control precision of the common rail fuel injection system.
KW - Engineering thermophysics
KW - Filter
KW - Fuel quality deviation
KW - Multi-injection
KW - Power mechinery and engineering
KW - Pressure fluctuation
UR - https://www.scopus.com/pages/publications/85048875513
U2 - 10.13229/j.cnki.jdxbgxb20170121
DO - 10.13229/j.cnki.jdxbgxb20170121
M3 - Article
AN - SCOPUS:85048875513
SN - 1671-5497
VL - 48
SP - 760
EP - 766
JO - Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition)
JF - Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition)
IS - 3
ER -