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, 2012
Filed:
Sep. 30, 2009
Jason Meyer, Dayton, OH (US);
Shawn W. Midlam-mohler, Columbus, OH (US);
Kenneth P. Dudek, Rochester Hills, MI (US);
Stephen Yurkovich, Columbus, OH (US);
Yann G. Guezennec, Upper Arlington, OH (US);
Jason Meyer, Dayton, OH (US);
Shawn W. Midlam-Mohler, Columbus, OH (US);
Kenneth P. Dudek, Rochester Hills, MI (US);
Stephen Yurkovich, Columbus, OH (US);
Yann G. Guezennec, Upper Arlington, OH (US);
Abstract
A steady-state (SS) delay module determines a SS delay period for SS operating conditions based on an air per cylinder. A dynamic compensation module determines a predicted delay period based on first and second dynamic compensation variables for dynamic operating conditions, the SS delay period, a previous predicted delay period. The first dynamic compensation variable corresponds to a period between a first time when fuel is provided for a cylinder of an engine and a second time when exhaust gas resulting from combustion of the fuel and air is expelled from the cylinder. The SS and predicted delay periods correspond to a period between the first time and a third time when the exhaust gas reaches an exhaust gas oxygen sensor located upstream of a catalyst. A final equivalence ratio module adjusts fuel provided to the cylinder after the third time based on the predicted delay period.