Extra-high Speed Digital Valve has been studied for a decade by the authors. This paper presents the study results with two aspects such as in hydraulics and electronics. Digital valve must become next generation for hydraulic technology. In this paper, one application area in fuel injection requires extra-high speed as high as 2000 Hz. Providing the ability of fast response and high traction force, and a simple construction, a new concept for this valve is presented herewith. Some simulation results as well as experimental results show that the new extra-speed valve has been developing.
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