Abstract

The authors have developed a high-speed solenoid valve with a 1 ms switching time to control diesel engines electronically. In this paper, the authors focused their attention on developing the solenoid itself, investigating methods to be used for the fast operation of the solenoid valve. First, by using a mathematical model, they quantitatively examined the effects of design particulars, such as the dimensions of the solenoids and the number of turns of coil, on the switching time. According to the results obtained by the above examinations, they studied an effective method for fast switching. Next, they investigated appropriate and comprehensive methods that would satisfy given specifications under the various restrictions inherent in the solenoid valve's operation. In the final stage, they manufactured solenoid valves in accordance with the investigated methods, and evaluated their performance. >

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