Abstract: A fuel fired burner defines an axially extending flow path. An airless fuel nozzle sprays fuel droplets within the fuel fired burner in a direction generally along the axially extending flow path. An exhaust gas inlet directs exhaust gases from a vehicle exhaust system toward the airless nozzle in a direction that is transverse to the axially extending flow path. The exhaust gas mixes with the fuel droplets resulting in an exhaust gas/fuel mixture.

Abstract: A fuel-fired burner in a vehicle exhaust system is selectively activated to increase exhaust gas temperature to a desired reference temperature. The fuel-fired burner can be either a partial range burner or a full range burner. A control strategy activates the fuel-fired burner only when needed to provide NO2 based passive regeneration of a diesel particulate filter in a fuel efficient manner. The control strategy includes at least one of a look-up table which outputs the desired reference temperature as a function of engine operating conditions, a comparison of pressure characteristics to predetermined thresholds, and a steady-state model or a transient model that outputs the desired reference temperature as a function of exhaust back-pressure and estimated exhaust oxygen flowrate.

Abstract: A fuel fired burner defines an axially extending flow path. An airless fuel nozzle sprays fuel droplets within the fuel fired burner in a direction generally along the axially extending flow path. An exhaust gas inlet directs exhaust gases from a vehicle exhaust system toward the airless nozzle in a direction that is transverse to the axially extending flow path. The exhaust gas mixes with the fuel droplets resulting in an exhaust gas/fuel mixture.

Abstract: A method of operating an emission abatement system includes advancing a liquid agent to an atomizing nozzle and advancing pressurized air to the atomizing nozzle. The method further includes impinging the pressurized air on the liquid agent at a tip of the atomizing nozzle to shear liquid agent particles from the liquid agent. The method further includes advancing the liquid agent particles through the atomizing nozzle to an emission abatement device. An emission abatement system and atomizer apparatus are also disclosed herein.

Abstract: A method of operating an emission abatement system includes advancing a liquid agent to an atomizing nozzle and advancing pressurized air to the atomizing nozzle. The method further includes impinging the pressurized air on the liquid agent at a tip of the atomizing nozzle to shear liquid agent particles from the liquid agent. The method further includes advancing the liquid agent particles through the atomizing nozzle to an emission abatement device. An emission abatement system and atomizer apparatus are also disclosed herein.