| 摘要 |
<p>PURPOSE:To reduce the change in the discharge pressure of a compressor as much as possible, by providing a transducer which amplifies the discharge pressure at a prescribed amplification ratio. CONSTITUTION:Pressure remaining in a working pressure chamber 11 is slowly released to the outside through an orifice 12. As a result, the pressure difference between the inside and outside of a bellows 9 disappears and the bellows expands to shut off an exhaust bypass valve 6. When the exhaust bypass valve is shut off and the revolving speed of an engine is high, the discharge pressure of a compressor 3 rises and the same operation is repeated to keep the discharge pressure constant. The change in the discharge pressure is amplified at a prescribed ratio by a transducer 14 to actuate a driving mechanism 8 even if the change is small. As a result, the change in the discharge pressure of the compressor from the beginning of opening of the exhaust bypass valve 6 to its full opening is reduced as much as possible.</p> |
