Study on Transient Fuel Hydrodynamic Force Characteristics of High-Speed Solenoid Valve for Common Rail Injector

In this study, an attempt has been made to investigate the supercavitation and hydrodynamic characteristics of high-speed vehicles. A homogeneous equilibrium flow model and a Schnerr–Sauer model based on the Reynolds-averaged Navier–Stokes method are used. Grid-independent inspection and comparison with experimental data in the literature have been carried out to verify the accuracy of numerical methods. The effect of the navigation speed and angle of attack on the cavitation morphology and dynamic characteristics has been investigated. It has been demonstrated that the angle of attack has a remarkable influence on the wet surface and hydrodynamic force, whereas navigation speed has little effect on the position force of the vehicle under the circumstance of no wet surface. The hydrodynamic force changes periodically with the swing of the vehicle, but its maximum is greater than that for the direct navigation state at the same attack angle. Moreover, the damping effect obviously affects the hydrodynamic force amplitude and movement trend.

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Study on Influencing Factors and Laws of Fuel Injection Consistency of Common Rail Injector

Journal of Physics Conference Series ◽

10.1088/1742-6596/2097/1/012001 ◽

2021 ◽

Vol 2097 (1) ◽

pp. 012001

Author(s):

Ziwei Zhang ◽

Chunlong Xu

Keyword(s):

Fuel Injection ◽

Solenoid Valve ◽

Hole Diameter ◽

Operating Conditions ◽

Nozzle Diameter ◽

Common Rail ◽

Valve Lift ◽

Needle Valve ◽

Inlet Hole ◽

Common Rail Injector

Abstract In order to study the influence of parameters of common rail injector internal components on cycle injection consistency, its simulation model is established by AMESim, and the model is validated by the experimental injection rate data. The effects of solenoid valve spring preload, gag bit lift, fuel discharge hole diameter, fuel inlet hole diameter, needle valve lift, needle valve preload and nozzle diameter on the change of injection quantity under different operating conditions are studied by simulation method, and the impact weight of each parameter on fuel injection consistency is analyzed. The results show that the preload of solenoid valve, fuel discharge hole diameter, oil inlet hole diameter, needle valve lift and nozzle diameter are the main parameters affecting the consistency of cycle injection. The percentages of five parameters influencing on the consistency of cyclic injection are 8.68-16.84%, 11.41-23.68%, 17.2086-37.74%, 12.772-18.34% and 9.69-37.27% respectively.

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Design of Driving Circuit of Solenoid Valve for High Pressure Common Rail Diesel Engine Injector

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.562-564.1054 ◽

2012 ◽

Vol 562-564 ◽

pp. 1054-1057

Author(s):

Jun Wang ◽

Yong Hui Jia ◽

Bing Jie Zu

Keyword(s):

High Pressure ◽

Diesel Engine ◽

Pulse Width ◽

High Speed ◽

Simulation Analysis ◽

Solenoid Valve ◽

Common Rail ◽

Experimental Results ◽

Drive Circuit ◽

Driving Circuit

Based on the BOSCH injector for research object, driving circuit is adopted the "dual voltage" adjustable pulse width driven model. Using the method of combining simulation analysis and correlation calculation, the key parameters in the boost circuit and the logical drive circuit is studied and selected. Experimental results show that the driver modules meet the needs of high speed solenoid, basically achieved the target.

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Research on Intelligent Actuation Control Technology of High-Speed Solenoid Valve

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.678.388 ◽

2014 ◽

Vol 678 ◽

pp. 388-391

Author(s):

Yuan Chang ◽

Guang Yao Ouyang ◽

Zhen Ming Liu

Keyword(s):

High Speed ◽

Finite State Machine ◽

Control Method ◽

Low Voltage ◽

Solenoid Valve ◽

Control Circuit ◽

Time Sharing ◽

Current Feedback ◽

Finite State ◽

Common Rail Injector

In order to develop actuation circuit for high pressure common rail injector solenoid valve, the high and low voltage time-sharing actuation control method based on current feedback was researched. A finite state machine tool called stateflow was used to establish the actuation model of solenoid, and the intelligent actuation control circuit was developed according to the model and MCU. The driving current can be adjusted automatically according to “Peak-High-Low” three-stage current, and the circuit can troubleshoot the state of solenoid. Driving Experiments on solenoid and injector were carried out and the results show the good performance of the intelligent actuation control circuit.

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