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首页> 外文期刊>International Journal of Automotive Technology >Study on Transient Fuel Hydrodynamic Force Characteristics of High-Speed Solenoid Valve for Common Rail Injector
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Study on Transient Fuel Hydrodynamic Force Characteristics of High-Speed Solenoid Valve for Common Rail Injector

机译：共轨喷射器高速电磁阀瞬态燃料流体动力学力的研究

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摘要

The working process of the high-speed solenoid valve (HSV) of high-pressure common rail (CR) injector has the characteristics of electro-magnetic-mechanical-hydrodynamic multi-physical field coupling. However, most of the research work in this field is carried out without considering hydrodynamic environment of the HSV. Furthermore, the dynamic response characteristics of the transient fuel hydrodynamic force (TFHF) of the HSV should not be neglected. In this study, a three-dimensional finite element method is used to simulate the TFHF between the injector electromagnet and the armature. The results show that cavitation phenomena appears on the lower surface of the armature during the HSV opening process. The faster the armature moves up, the greater the cavitation intensity. Damping holes on the armature can reduce the TFHF acting on the upper surface of the armature; however, the armature structure with straight grooves and damping holes reduces the TFHF more evidently during the HSV opening and the inhibition effect of this structure on cavitation is more evident. The TFHF on the armature decreases with an increase in the depth of the coil groove. However, the selection of the groove depth should be considered together with the optimization of the electromagnetic force characteristics of the HSV.
机译：高压公共轨道（CR）喷射器的高速电磁阀（HSV）的工作过程具有电磁 - 机械 - 流体动力多物理场耦合的特性。然而，在不考虑HSV的流体动力环境的情况下进行该领域的大多数研究工作。此外，不应忽略HSV的瞬态燃料流体动力学力（TFHF）的动态响应特性。在该研究中，三维有限元方法用于模拟喷射器电磁铁和电枢之间的TFHF。结果表明，空化现象在HSV开口过程中出现在电枢的下表面上。电枢向上移动越快，空化强度越大。电枢上的阻尼孔可以减少作用在电枢上表面上的TFHF;然而，具有直槽和阻尼孔的电枢结构在HSV开口期间更明显地减小了TFHF，并且该结构对空化的抑制效果更明显。电枢上的TFHF随着线圈槽的深度的增加而降低。然而，应与HSV的电磁力特性的优化一起考虑凹槽深度的选择。

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