Patent ID: 7277801
Filing Date: 2007-10-02
Classification: B01D,F01N,F23C,F23D,F23N,G01M,Y02A,Y02T

Abstract:
1. A method for simulating aging of an emissions control device in the exhaust line of an internal combustion engine, comprising: providing a burner system having at least a burner for receiving air and fuel having an air-fuel ratio and for combusting a fuel feedstream to produce simulated engine exhaust; an exhaust line for carrying the exhaust from the burner to the emissions control device; a heat exchanger for cooling the exhaust gas downstream the burner; and a fan for directly cooling the emissions control device; placing the emissions control device on the exhaust line downstream the heat exchanger; simulating a number of engine cycles, using a computerized control system, each cycle having a succession of engine operating modes, wherein at least one of the modes is a thermal excursion mode accomplished by providing the burner with a rich air-fuel ratio and providing supplemental oxygen into the exhaust line immediately upstream the emissions control device; providing a user interface for the control system; and storing, in a computer readable medium, values representing exhaust gas temperature during the thermal excursion mode.