Optimization of the Solenoid Valve Behavior in Common-Rail Injection Systems

Investigation on Electromagnetic Models of High‐Speed Solenoid Valve for Common Rail Injector

“…The model simplified the electromagnetic process calculation of the solenoid valve as the calculation of an RL equivalent circuit. Ma et al [17], Shamdani et al [18], and Bianchi et al [19] determined the influencing relation of drive current and air gap on electromagnetic force by a polynomial fit technique based on test data of the static electromagnetic force. Wang et al [20] and Chung et al [21] considered the magnetic saturation characteristics of an HSV by adjusting the coefficient of the fitting formula to limit the maximum electromagnetic force of the valve.…”

Numerical Analysis of High-Pressure Fast-Response Common Rail Injector Dynamics

“…Then simulations have been carried out in order to investigate the limits of the injector under fast actuation operating conditions like those occurring during multiple injections. The driving pulses for operating multiple injections were derived from those allowed by a fastresponse electronic driving circuit already designed and experimentally tested by the authors [10,11]. This solution operates at a higher voltage level (i.e., 100 V) than the standard driving circuit (i.e., 75 V) allowing the anchor to be driven faster than the current solution.…”

“…Forces due to the pressures on the surfaces, to the spring load and pre-load, to friction and collisions between the elements were considered. The electrical sub-model was presented, developed and validated by the authors [10]. Based on this work, the electrical behavior of the control circuit can be modeled by the equations [10]:…”

“…The electrical sub-model was presented, developed and validated by the authors [10]. Based on this work, the electrical behavior of the control circuit can be modeled by the equations [10]:…”

“…No data are reported on standard deviations over more injection cycles and over pilot, pre-main, main, after-main and post injection. Simultaneously the authors [10,11] presented the performance of a new driving circuit capable of reducing the minimum switching time of the solenoid valve. Thanks to a reduction in the capacitor recharge time, which allowed a sharper voltage profile, a reduction of actuation time was achieved.…”