| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control valve for a variable displacement swash plate compressor capable of performing stable feed back control of delivery capacity of the compressor from low delivery capacity to large delivery capacity and of suppressing drop of efficiency of a compressor at a time of large delivery capacity. <P>SOLUTION: This control valve for the variable capacity swash plate compressor used for air conditioner for air-conditioning is provided with a restriction part arranged in a coolant circuit, a throttle valve arranged in a branch flow passage connecting a primary side and a secondary side of the restriction part, a constant differential pressure valve opening when pressure difference between primary side pressure and secondary side pressure of the throttle valve reaches a predetermined value to lead compressor delivery gas to a crank chamber, an external information detection means detecting cooling load, vehicle traveling conditions and the like, and a control means determining opening of the throttle valve based on the external information. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
