電磁サンプリングバルブの試作

抄録

A new gas sampling valve working at high speed was prepared for the study of the scavenging in two-stroke engine, and its own performance was examined to obtain the basic data for the future design. This new valve is a kind of an electromagnetic solenoid valve, and it is actuated by making an instantaneous heavy current into a coil that generates an inverse magnetic field against the fixed magnetic field. The experiments were done to determine the working region of the valve, the time lag of the opening, the duration of valve opening and the volume of the sampled gas etc. AS a result, the time lag of for the opening t_d was about 0.5∼1.0 milliseconds, the duration of valve opening t_f could be obtained for 1∼10 milliseconds and the gas could be sampled at a rate of about 10cc/ms under the pressure difference of 1kg/cm².