| 摘要 |
PURPOSE: To set a necessary high pressure influence characteristic correlated with a system load characteristic in response to energy-saving without increasing a pressure loss of a compressor. CONSTITUTION: In a delivery control valve for a variable delivery compressor which is put in a full load operation condition when pressure of a crank chamber 3 becomes pressure substantially equal to suction pressure Ps of the compressor by reducing delivery according to an increase in pressure Pc of the crank chamber 3 enclosing a swash plate 9 and by increasing the delivery according to reduction in the pressure PC of the crank chamber 3, communicating passages 50 and 57 are arranged to communicate a suction port 15 of the compressor and the crank chamber 3, and the suction pressure Ps of the compressor and delivery pressure Pd of the compressor are applied in the valve opening direction, and the suction pressure Ps necessary to open the valve is increased by reduction in the delivery pressure Pd. |
