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. 21, 1996
Filed:
May. 04, 1994
Applicant:
Inventors:
Gang Chen, Madison Heights, MI (US);
Terry R Gutermuth, St. Clair Shores, MI (US);
Michael T Vincent, Novi, MI (US);
Assignee:
Chrysler Corporation, Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ; F02P / ;
U.S. Cl.
CPC ...
12333911 ;
Abstract
A method of controlling idle speed of an internal combustion engine in an automotive vehicle is provided. The method includes the steps of calculating an acceleration error of the engine and determining whether the calculated acceleration error is greater than a predetermined deadband. The method also includes the steps of opening or closing an Automatic Idle Speed (AIS) stepper motor if the acceleration error is greater than the predetermined deadband and increasing or decreasing a spark advance if the acceleration error is not greater than the predetermined deadband.