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:
Oct. 18, 2005
Filed:
Aug. 31, 2004
Ibrahim Haskara, Westland, MI (US);
Guoming G. Zhu, Novi, MI (US);
Ibrahim Haskara, Westland, MI (US);
Guoming G. Zhu, Novi, MI (US);
Visteon Global Technologies, Inc., Van Buren Township, MI (US);
Abstract
The present invention provides a system and method for controlling the retard limit of an engine having one or more cylinders in which combustion occurs. A sensor is employed to detect the ionization of the combustion process in the cylinders. The ionization is related to a retard limit feedback, and the sensor further transmits a signal associated with the retard limit feedback. A controller relates the retard limit feedback signal to a metric, monitors the stochastic behavior of the metric, and adjusts the ignition timing of the engine in response to the stochastic behavior to operate the engine below a retard limit target.