Abstract: A method includes supplying combustion air to a fuel-fired burner of an emission abatement device from a turbocharger. During periods of low turbo boost pressure, combustion air is supplied to the fuel-fired burner from an auxiliary source. An associated apparatus is also disclosed.

Abstract: A method of reducing NOx in exhaust gases generated by an internal combustion engine includes advancing the exhaust gases along an exhaust path to a selective catalytic reduction (SCR) catalyst positioned downstream from the internal combustion engine. The method further includes activating a heat source if the exhaust gases are below a predetermined temperature, such that the exhaust gases along a segment of the exhaust path are heated to a temperature of 700-1000° C. The method further includes injecting a reductant into the segment of the exhaust path upstream of the SCR catalyst to react in the segment with NOx in the exhaust gases. The method further includes deactivating the heat source if the temperature of the exhaust gases at the catalyst rises above the first predetermined temperature. An emission abatement assembly is also disclosed.

Abstract: A diesel exhaust system includes a supply of diesel fuel. The system further includes a first reduction path having a diesel fuel-fired burner operated to partially oxidize diesel fuel supplied thereto from the supply of diesel fuel and to introduce at least one of CO and H2 into an exhaust stream. The first reduction path further includes an oxidation catalyst and a first emissions reduction component that is configured to be regenerated by CO and H2 in the exhaust system. An associated method is disclosed.

Abstract: An apparatus comprises a supplier of air and/or fuel, a main passageway fluidly coupled to the supplier to receive air and/or fuel therefrom to provide a fuel-rich air-and-fuel main mixture in the main passageway, and a pilot flame generator mounted in the main passageway. The pilot flame generator defines therein a pilot passageway that is fluidly coupled to the supplier to receive air and/or fuel therefrom and is fluidly coupled to the main passageway to receive air and/or fuel therefrom to provide an air-and-fuel pilot mixture in the pilot passageway. The pilot flame generator comprises an ignition device configured to ignite the pilot mixture to generate a pilot flame that initiates a partial oxidation reaction of the main mixture so as to generate reformate gas. An associated method is disclosed.

Abstract: A fuel reforming apparatus for reforming a fuel comprises a combustion device and a catalyst. The combustion device is configured to oxidize a portion of the fuel into H2O. The catalyst is configured to catalyze an endothermic reaction between the H2O and another portion of the fuel so as to produce a reformate gas. An associated method is disclosed.

Abstract: An apparatus comprises an emissions trap and a trap regenerator fluidly coupled to the emissions trap to advance a regenerative agent thereto to regenerate the emissions trap. The trap regenerator is configured to change a concentration of the regenerative agent advanced to the emissions trap from a first trap-regenerating level to a second trap-regenerating level different from the first trap-regenerating level. An associated method is disclosed.

Abstract: An emission abatement assembly includes a fuel reformer which supplies reformate gas to a catalyst. Exhaust gas from an internal combustion engine is advanced through the catalyst and into a downstream SCR catalyst.

Abstract: A method of operating an emission abatement assembly includes detecting presence of a predetermined environmental condition with a control unit of the assembly and ceasing operation of the assembly in response thereto. An emission abatement assembly is also disclosed.

Abstract: An emission abatement system comprises a plurality of NOX traps positioned in a parallel flow arrangement, a desulfurization agent supplier for supplying a desulfurization agent, a valve arrangement for directing flow of the desulfurization agent and internal combustion engine exhaust gas between the NOX traps, and a controller. The controller is used to control operation of the desulfurization agent supplier and the valve arrangement to desulfurize the NOX traps. An associated method is disclosed.

Abstract: A method of operating a power system includes operating a fuel reformer so as to produce a reformate gas. The reformate gas is advanced through a turbine of a turbocharger thereby driving the compressor of the turbocharger. Pressurized air generated by the compressor is supplied to the air inlet of the fuel reformer. The reformate gas exiting the turbine of the turbocharger is advanced to a component such as the intake of the engine, an emission abatement device, or a fuel cell. A fuel reforming system operated by such a method is also disclosed.