| 摘要 |
<p>PURPOSE:To automatically determine water injecting timing by integrating one period component of the waviness of the output signal from a detecting element, deciding the point of the time when the computed value exceeds the preset threshold value, delaying the timing by the preset delay time from the time when the threshold value is exceeded and outputting the signal at the delayed timing. CONSTITUTION:The output signal from the detecting element 4 is integrated for one period by utilizing the fact that the one period of the waviness can be previously estimated by hardening conditions, by which the fluctuation component of the wavy output signal is offset. The water injecting timing is delayed by as much as the preset time from the point of the time when the integrated value exceeds the preset threshold value and is then outputted. Then, the influence of the wavy fluctuation of the signal appearing in the output signal from the detecting element 4 is not received and the accuracy of the water injecting timing detection is improved.</p> |
