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:
Jan. 31, 2006
Filed:
Nov. 15, 2004
Yoshihiro Ochiai, Isesaki, JP;
Yoshihiro Ochiai, Isesaki, JP;
Sanden Corporation, Gunma, JP;
Abstract
An air conditioner accurately performs detection of a refrigerant circulation amount and improves a basic function including an accuracy and a response characteristic of a control for achieving stable maintenance of a room temperature. An electronic control system includes a controller performing an air-conditioning control so that flow detected information from a hot-wire flow sensor, refrigerant operation state information from a refrigerant operation state sensor, and temperature information from a resistance value sensor are added in external information detection means. Detection of the refrigerant circulation amount can be carried out more accurately and properly, a pressure control of a crank chamber pressure Pc is properly carried out through a gas feed passage by a control valve of a variable displacement compressor, the control valve being controllably driven by the controller through a drive circuit, and the basic function including an engine load control and an air-conditioning control is remarkably improved.