Patent Number: 7,788,020

Title: System and method for detecting cylinder misfire

Abstract: A system for detecting individual cylinder misfire in a multiple cylinder internal combustion (IC) engine having exhaust gas recirculation (EGR). The system includes: a device for predicting EGR flow rate on a cylinder to cylinder basis; a device for sensing actual EGR flow rate on a cylinder to cylinder basis with all cylinders firing; and a device for comparing the predicted EGR flow rate to the actual EGR flow to determine individual cylinder misfire.

Inventors: Wolf; Adam J. (Cedar Falls, IA), Johnson; Thomas M. (Dike, IA), Klingaman; Wes (Waterloo, IA)

Assignee: Deere & Company

International Classification: G01M 15/11 (20060101); F02D 21/08 (20060101); F02M 25/07 (20060101)

Expiration Date: 8/31/12018