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. 08, 2007
Filed:
Jan. 28, 2005
Chao F. Daniels, Ypsilanti, MI (US);
Ibrahim Haskara, Westland, MI (US);
Guoming G. Zhu, Novi, MI (US);
Chao F. Daniels, Ypsilanti, MI (US);
Ibrahim Haskara, Westland, MI (US);
Guoming G. Zhu, Novi, MI (US);
Visteon Global Technologies, Inc., Van Buren Township, MI (US);
Abstract
This feature of the present invention comprises a system and method of controlling exhaust gas recirculation (EGR) based on a measure combustion stability measure. The combustion stability measure is obtained by determining the integration duration of the engine ionization signal, i.e., the crank angle at which the integral of the ionization signal reaches a specified percentage of its total. The present invention uses the integration duration to control the maximum EGR rate of the engine in a closed loop while maintaining the combustion stability of an internal combustion engine.