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:
Sep. 15, 1998
Filed:
Aug. 29, 1997
John W DeGeorge, Michigan Center, MI (US);
Chrysler Corporation, , US;
Abstract
A method of air conditioning compensation is disclosed for a motor vehicle having an air conditioning (AC) system with a compressor, an automatic idle speed (AIS) compensation mechanism having an AIS position and an engine control mechanism. The method includes the steps of comparing a head pressure on the compressor to a predetermined continuous curve of relative AIS position and identifying a first point on the curve of relative AIS position associated with the head pressure. The method also includes the steps of identifying a second point and a third point on the curve of relative AIS position that the first point is between and weighting the second point with respect to the first point and weighting the third point with respect to the first point. The method further includes the steps of interpolating the curve of relative AIS position using the weighted second point and the weighted third point to obtain a weighted relative AIS position, and determining if the weighted relative AIS position is equal to an AIS position target. The method still further includes the steps of updating the second point and the third point on the curve of relative AIS position if the weighted relative AIS position is not equal to an AIS position target and adjusting the AIS control mechanism when called for by the engine control mechanism.