| 摘要 |
<p>A control valve for performing a Pd-Ps differential pressure control method in a variable displacement compressor adjusts the difference between an effective pressure-receiving area A on a discharge pressure side of an intermediate structure in which a valve element 14 is made to move in unison with a shaft 18 and an effective pressure-receiving area B on a suction pressure side of the intermediate structure, as required. This allows to obtain desired "differential pressure · crank pressure characteristics" according to the specifications of the control valve. Changes in the effective pressure-receiving areas have almost no influence on "electric current · differential pressure characteristics", i.e. the relationship between the value of the supplied electric current and the differential pressure (Pd-Ps), and hence it is possible to realize the changes in the effective pressure-receiving areas A, B with ease.</p> |
