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:
Jul. 17, 2007
Filed:
Dec. 18, 2003
Satoshi Umemura, Kariya, JP;
Yuji Hashimoto, Kariya, JP;
Ryo Matsubara, Kariya, JP;
Masakazu Murase, Kariya, JP;
Tatsuya Koide, Kariya, JP;
Satoshi Umemura, Kariya, JP;
Yuji Hashimoto, Kariya, JP;
Ryo Matsubara, Kariya, JP;
Masakazu Murase, Kariya, JP;
Tatsuya Koide, Kariya, JP;
Kabushiki Kaisha Toyota Jidoshokki, Kariya-shi, JP;
Abstract
In a control system of a variable displacement compressor, a pressure sensing means mechanically detects at least one pressure in the refrigerant circuit. A varying means varies a reference value for positioning a valve body. A pressure detector electrically detects the pressure detected by the pressure sensing means in the refrigerant circuit and/or physical quantity which correlates with the detected pressure. A calculator calculates a maximum value of urging force applied to the valve body by the varying means toward an increasing side of the displacement of the compressor. The urging force applied to the valve body is controlled not to exceed the maximum value toward the increasing side of the displacement. The displacement of the compressor is maximized by the pressure sensing means under the pressure for calculating the maximum value when the varying means applies urging force of the maximum value to the valve body.