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. 05, 2013
Filed:
Dec. 02, 2008
Raymond Claude Turin, Grosse Pointe Park, MI (US);
Andrew P Bagnasco, Plymouth, MI (US);
Steven Ward Majors, Howell, MI (US);
Ian J. Macewen, White Lake, MI (US);
Raymond Claude Turin, Grosse Pointe Park, MI (US);
Andrew P Bagnasco, Plymouth, MI (US);
Steven Ward Majors, Howell, MI (US);
Ian J. MacEwen, White Lake, MI (US);
Abstract
An air/fuel imbalance (AFIM) diagnostic system comprises a first module, an imbalance determination module, and an imbalance diagnostic module. The first module outputs imbalance data samples based on an oxygen signal provided by an oxygen sensor measuring oxygen in exhaust expelled from cylinders of a cylinder bank. The imbalance determination module determines an AFIM value based on the imbalance data samples. The imbalance diagnostic module selectively diagnoses an AFIM in the cylinder bank based on the AFIM value.