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:
Apr. 22, 2008
Filed:
May. 24, 2005
Applicants:
Thomas M. Tembreull, Homer, MI (US);
Eric L. Charbonneau, Kalamazoo, MI (US);
Inventors:
Thomas M. Tembreull, Homer, MI (US);
Eric L. Charbonneau, Kalamazoo, MI (US);
Assignee:
BorgWarner Inc., Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 5/00 (2006.01); H02P 5/46 (2006.01); H02P 7/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A feedback control logic system for commanding a particular air conditioning unit fan speed is driven by a pulse-width modulated signal from a control unit. The engine control unit decrements the pulse-width modulated signal to the air conditioning unit fan and allows the fan to run for a predetermined time. If a particular function, such as shutting off of an air conditioner pressure switch or other sensor, has not been achieved within the predetermined time, the engine control unit again decrements the pulse-width modulated signal.