Patent ID: 6098013
Filing Date: 2000-08-01
Classification: F02D,G01M

Abstract:
A system for monitoring exhaust gas hydrocarbon content of an internal combustion engine including at least one combustion chamber, the system comprising:at least one sensing device for detecting whether expected combustion conditions occur within the at least one combustion chamber and responsively producing signals indicative of whether the expected combustion conditions occur within the at least one combustion chamber; andan electronic controller connected to the at least one sensing device and receiving signals therefrom, said electronic controller being operable to determine an estimated exhaust gas hydrocarbon content based at least in part upon the signals received from the at least one sensing device, to determine an engine misfire rate based upon the signals received from the at least one sensing device, and to determine the estimated exhaust gas hydrocarbon content as a function of at least the determined misfire rate.