Capacity control valve and control method therefor

Details Capacity control valve and control method therefor Capacity control valve and control method therefor

2006-05-02

2006-05-02

Hepperle, Stephen M. (Department: 3753)

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

C137S625180, C137S625200

Reexamination Certificate

active

07037087

ABSTRACT:
An object of the capacity control valve is to provide a constant, stable control of the pressure load without fluctuations. Also another object is to improve an energy efficiency of the drive torque of the rotary shaft by means of a control of the pressure load. In this arrangement, the solenoid coil section controls as a reference value of pressure load which is calculated by taking a sum of a pressure differential between the discharge pressure and the pressure in the control chamber, multiplied by the area of the open passage of the first valve seat, and a pressure differential between the pressure in the control chamber and the suction pressure, multiplied by the area of the open passage of the second valve seat.

REFERENCES:
patent: 4606705 (1986-08-01), Parekh
patent: 5071321 (1991-12-01), Skinner et al.
patent: 5702235 (1997-12-01), Hirota et al.
patent: 5836748 (1998-11-01), Kawaguchi et al.
patent: 5964578 (1999-10-01), Suitou et al.
patent: 6102668 (2000-08-01), Kawaguchi et al.

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