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:
Oct. 29, 2013
Filed:
Oct. 31, 2008
Sai S. V. Rajagopalan, Sterling Heights, MI (US);
Kenneth P. Dudek, Rochester Hills, MI (US);
Sharon Liu, Ann Arbor, MI (US);
Stephen Yurkovich, Columbus, OH (US);
Shawn W. Midlam-mohler, Columbus, OH (US);
Yann G. Guezennec, Upper Arlington, OH (US);
Yiran HU, Powell, MI (US);
Sai S. V. Rajagopalan, Sterling Heights, MI (US);
Kenneth P. Dudek, Rochester Hills, MI (US);
Sharon Liu, Ann Arbor, MI (US);
Stephen Yurkovich, Columbus, OH (US);
Shawn W. Midlam-Mohler, Columbus, OH (US);
Yann G. Guezennec, Upper Arlington, OH (US);
Yiran Hu, Powell, MI (US);
Abstract
A fuel control system of an engine system comprises a pre-catalyst exhaust gas oxygen (EGO) sensor, a setpoint generator module, a sensor offset module, and a control module. The pre-catalyst EGO sensor generates a pre-catalyst EGO signal based on an air-fuel ratio of an exhaust gas. The setpoint generator module generates a desired pre-catalyst equivalence ratio (EQR) signal based on a desired EQR of the exhaust gas. The sensor offset module determines an offset value of the pre-catalyst EGO sensor. The control module generates an expected pre-catalyst EGO signal based on the desired pre-catalyst EQR signal and the offset value.