Patent ID: 7212926

Claim:
A burner-based system for producing exhaust that simulates exhaust produced by an internal combustion engine, for delivery of the exhaust to an emissions control device, comprising: a burner system having at least a burner for receiving air and fuel having an air-fuel ratio and for combusting fuel to produce simulated engine exhaust; wherein the burner is operable to receive and combust gaseous alternative fuel; wherein the burner further has a plenum chamber and combustion tube separated by a swirl plate, such that the air travels through the swirl plate; an orifice type fuel injector for supplying the fuel to the burner via a fuel supply line; 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; a blower for providing forced air to the swirl plate; and a computerized control system operable to simulate a number of engine cycles, each cycle having a succession of engine operating modes.