Controller for variable displacement compressor and control...

Details Controller for variable displacement compressor and control... Controller for variable displacement compressor and control...

2007-05-01

2007-05-01

Koczo, Jr., Michael (Department: 3746)

Pumps

Processes

C417S222200, C062S228300

Reexamination Certificate

active

10976101

ABSTRACT:
A controller for a variable displacement compressor that maintains high displacement while preventing excessive increase in discharge pressure. The controller includes a pressure sensing mechanism for detecting pressure of a suction pressure region in the compressor. A suction pressure controlling means controls the displacement of the compressor so that the pressure detected by the pressure sensing mechanism is converged to a predetermined suction pressure setting. A sensor detects pressure of a discharge pressure region in the compressor. A discharge pressure controlling means controls the displacement of the compressor so that the pressure detected by the sensor is converged to a predetermined discharge pressure setting. When the pressure detected by the sensor is greater than a threshold pressure, an ECU switches the control of the compressor from control with the suction pressure controlling means to control with the discharge pressure controlling means.

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patent: 11-223183 (1999-08-01), None
patent: 2002-147351 (2002-05-01), None

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