| 摘要 |
<P>PROBLEM TO BE SOLVED: To surely forcibly open a control valve with a delivery pressure cancel function at a time of non-energization of a solenoid part under any load condition. <P>SOLUTION: An inner diameter A of a valve hole is made larger than an outer diameter B of a pressure sensitive piston 20 and received pressure balance of delivery pressure Pd acting on a valve element 17 and the pressure sensitive piston 20 is changed. Load in a self opening direction by a delivery pressure Pd repulsing load acting in a self closing direction is generated by pressure difference between pressure Pc in a crank chamber and suction pressure. Consequently, since load in the self closing direction which gets larger as delivery pressure Pd gets higher is reduced and load of spring energizing the valve element 17 in the self opening direction at the time of non-energization of the solenoid part can be substantially increased, the control valve gets easy to be opened at the time of non-energization of the solenoid part and the valve is surely opened. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
