| 摘要 |
PURPOSE:To enable economical efficiency and durability to be provided surely corresponding to a vehicle in its operative condition by performing a volume control of a compressor by an electric sensor. CONSTITUTION:A decrease of pressure of refrigerant gas in an operating chamber is detected by a semiconductor pressure sensor feeding a necessary pulse to a stepping motor 18 through a control circuit. In this way, the stepping motor 18 rotates by a desired degree of angle, rotating a control plate 6 through a rod 19 and a joint 20. The control plate 6, thus rotated, gradually overlaps a through hole 8 with a compression leak hole 9, cutting the compression volume to be removed and enabling the compression volume of wide range to be electrically controlled. Accordingly, an economical and fine volume control can be performed, further even durability can be improved by decreasing a number of on-off times of a compressor. |
