Patent application number | Description | Published |
20090178389 | Method and Apparatus for Controlling a Fuel-Fired Burner of an Emission Abatement Assembly - A method of operating a fuel-fired burner of an emission abatement assembly includes advancing exhaust gas from an internal combustion engine to the fuel-fired burner. The method further includes determining an amount of useable oxygen present in the exhaust gas. The method further includes adjusting an amount of fuel supplied to the burner based upon the amount of useable oxygen present in the exhaust gas. | 07-16-2009 |
20090180937 | Apparatus for Directing Exhaust Flow through a Fuel-Fired Burner of an Emission Abatement Assembly - An emission abatement assembly includes a fuel-fired burner having a housing and a combustion chamber positioned within the housing. The combustion chamber includes a wall circumscribing a space. The emission abatement assembly further includes an exhaust gas inlet pipe having an elbow at an outlet end positioned within the housing. The elbow is positioned to direct an entire flow of exhaust gas in a direction toward an interior wall of the housing such that the entire flow of exhaust gas exiting the elbow impinges upon the interior wall prior to reaching the wall and space of the combustion chamber. | 07-16-2009 |
20110047979 | FUEL-FIRED COMBUSTOR - A fuel-fired combustor includes a housing with a combustion chamber. The housing has an inlet and an outlet. A fuel inlet to the housing supplies fuel to the combustion chamber. An igniter ignites a mixture of exhaust gas and fuel to produce a flame for increasing an internal temperature. At least one sensor measures or monitors at least one combustor characteristic and generates a corresponding combustor characteristic signal. A controller receives the combustor characteristic signal, compares the combustor characteristic signal to a predetermined combustor criteria and generates an output signal to change at least one combustor operating condition if the combustor characteristic signal varies from the predetermined combustor criteria. | 03-03-2011 |
20110174264 | AIRLESS FUEL DELIVERY SYSTEM - An airless nozzle and fuel deliver system for a fuel-fired burner sprays fuel droplets for ignition to increase heat for regenerating an exhaust component. A source of pressurized fuel delivers pressurized fuel to a first fuel injector. In response to a first control signal, the first fuel injector is opened and fuel pressure is increased to a desired level to open a valve such that the fuel can be delivered to the airless nozzle. The airless nozzle sprays fuel droplets for a period of time that the first fuel injector is open. In response to a second control signal, the first fuel injector is closed and a second fuel injector is opened such that fuel is vented to decrease fuel pressure between the valve and the first fuel injector to stop the spray of fuel droplets by closing the valve. | 07-21-2011 |