The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2004
Filed:
Mar. 21, 2003
Taylor R. Eckstein, Jr., N. Tonawanda, NY (US);
Thomas Martin Urbank, Lockport, NY (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
An air conditioning system using a refrigerant to control a temperature of a climate-controlled area. The air conditioning system comprises a refrigerant circuit and a compressor coupled to the refrigerant circuit. The compressor includes a compression mechanism comprising a swash plate and at least one piston engaging the swash plate for compressing the refrigerant. An electric motor has a drive shaft that supports the swash plate at an inclination angle. The swash plate is adjustable between a plurality of inclination angles or stroke positions to adjust a current pressure in a low-side pressure portion of the refrigerant circuit. An electronic control valve adjusts the compression mechanism between the plurality of stroke positions to adjust the current pressure. A controller is programmed to control the electronic control valve until the current pressure is within a predetermined limit of a target pressure. A pressure sensor is coupled to the refrigerant circuit to measure the current pressure in the refrigerant circuit.