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:
Apr. 12, 2011
Filed:
Oct. 29, 2008
Sharon Liu, Ann Arbor, MI (US);
Kenneth P. Dudek, Rochester Hills, MI (US);
Sai Rajagopalan, Columbus, OH (US);
Stephen Yurkovich, Columbus, OH (US);
Yiran HU, Powell, OH (US);
Yann G. Guezennec, Upper Arlington, OH (US);
Shawn W. Midlam-mohler, Columbus, OH (US);
Sharon Liu, Ann Arbor, MI (US);
Kenneth P. Dudek, Rochester Hills, MI (US);
Sai Rajagopalan, Columbus, OH (US);
Stephen Yurkovich, Columbus, OH (US);
Yiran Hu, Powell, OH (US);
Yann G. Guezennec, Upper Arlington, OH (US);
Shawn W. Midlam-Mohler, Columbus, OH (US);
Abstract
A fuel control system of an engine includes a simulation module and a control module. The simulation module generates a simulated pre-catalyst exhaust gas oxygen (EGO) sensor signal based on a simulated oxygen concentration of an exhaust gas. The simulation module determines a simulated pre-catalyst equivalence ratio (EQR) for the exhaust gas based on the simulated pre-catalyst EGO sensor signal. The control module generates a desired pre-catalyst EGO sensor signal based on a desired oxygen concentration of the exhaust gas. The control module determines a desired pre-catalyst EQR based on the desired pre-catalyst EGO sensor signal. The control module determines a cost function based on the simulated pre-catalyst EQR and the desired pre-catalyst EQR. The fuel control system is calibrated based on the cost function.