| 摘要 |
<p>A valving device and a drive unit which can be used therefor. A rod on the valve side, fitted with a valve and positioned in a valve housing by a spring on the valve side, is pressed by a rod on the drive side fitted to a stepping motor to completely block a through passage with the valve. The drive-side rod is loosely fitted to the stepping motor. By detecting the shifting characteristics of this drive-side rod, the timing at which the valve starts opening is found from the number of pulses inputted into the stepping motor and the characteristics of the drive-side rod.</p> |
