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:
May. 11, 2004
Filed:
Mar. 19, 2003
Mingyu Wang, Amherst, NY (US);
John Lawrence Pawlak, III, Orchard Park, NY (US);
Charles Andrew Archibald, Lockport, NY (US);
John M. Kirchberger, Gasport, NY (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A motor vehicle automatic climate control determines HVAC parameter values for satisfying the required heating or cooling effort for steady-state cabin air temperature regulation, and controls the HVAC settings based such parameter values and on the deviation of the cabin air temperature (T ) from the set temperature (TSET). If T is within a specified control band about TSET, the HVAC settings are controlled in accordance with the determined HVAC parameter values, but when T overshoots or undershoots the control band, the control enters a quasi-steady-state mode in which the control parameters are reset to drive T back in to the control band, and then brought into correspondence with the respective determined values based on the degree to which the overall control objective of regulating T at TSET is achieved.