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:
Nov. 30, 2004
Filed:
Mar. 19, 2003
Bruce Allen Meek, Highland, MI (US);
Mark Sabuda, Livonia, MI (US);
Robert Sarow Baskins, Grass Lake, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A method for controlling spark timing. A plurality of tables provides borderline timing data contributors for each of a corresponding one of a plurality of different engine operating conditions. The contributors in each table are a function of engine speed and air charge. Background borderline spark timing is determined at a background computational rate from a summation of the borderline timing data in the plurality of tables data in the plurality of tables at engine speed measured at the borderline computational rate and air charge determined at the borderline computational rate. A one-dimensional table has borderline timing data contributors extracted from the provided tables. The extracted borderline timing data contributors are the engine sped measured at the borderline computational rate and the air charge determined at the borderline computational rate. From the one-dimensional table, foreground borderline spark timing is determined at a higher, foreground computational rate.