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:
Feb. 14, 2006
Filed:
Mar. 30, 2005
Victoriano Ruiz, Brighton, MI (US);
Victoriano Ruiz, Brighton, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A spark control system and method for an engine having an intake cam phaser and/or an exhaust cam phaser, and having engine sensors, comprises a principal calculation module that determines a principal spark advance value based upon actual rotational position of the cam phasers, and an output calculation module that determines an output spark advance value based upon the principal spark advance value and spark modifiers determined from the engine sensors. The actual rotational positions of the cam phasers are obtained from predictive calculations or rotational position sensors on the cam phasers. The principal calculation module includes two separately calibrated look-up tables, indexed by the actual rotational position of the cam phasers, whose outputs are scaled and combined to determine the principal spark advance. The spark modifiers include temperature base, coolant, induction air temperature, equivalence ratio, and piston slap.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile