Patent Document ID: 20100050607
Application ID: 12229869
Patent Flag: 0

Claim One:
1. A method of controlling an exhaust stream temperature at a point along an exhaust system including an oxidation catalyst, a particulate filter including an outlet, and a fuel injector for injecting fuel into an exhaust stream at a location upstream from the outlet of the particulate filter, the method comprising the steps of: providing an adaptive control model that models a portion of the exhaust system; calculating a fuel injection flow rate at which fuel is injected into the exhaust stream by the fuel injector, based on the adaptive control model; controlling an operation of the fuel injector based on the calculated fuel injection flow rate, to control the exhaust stream temperature at the point along the exhaust system; monitoring a condition of the exhaust stream; determining an error in the adaptive control model based on the monitored condition; and changing the adaptive control model to reduce the error.