METHOD AND APPARATUS FOR OPERATING AN EMISSION ABATEMENT ASSEMBLY
First Claim
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1. A method of operating an emission abatement system comprising a selective catalytic reduction (SCR) catalyst, the method comprising:
- supplying fuel to a fuel-fired burner positioned upstream of the SCR catalyst to heat exhaust gas being advanced to the SCR catalyst,determining a flow rate of fuel being supplied to the burner,predicting the amount of fuel to be further supplied to the burner based upon the determined fuel flow rate, andsupplying the predicted amount of fuel to the burner.
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Abstract
According to one aspect of the disclosure, a method of operating an emission abatement system having a selective catalytic reduction (SCR) catalyst includes supplying fuel to a fuel-fired burner positioned upstream of the SCR catalyst to heat exhaust gas being advanced to the SCR catalyst. The method further includes determining a flow rate of fuel being supplied to the burner. The method further includes predicting the amount of fuel to be further supplied to the burner based upon the determined fuel flow rate. The method further includes supplying the predicted amount of fuel to the burner.
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Citations
13 Claims
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1. A method of operating an emission abatement system comprising a selective catalytic reduction (SCR) catalyst, the method comprising:
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supplying fuel to a fuel-fired burner positioned upstream of the SCR catalyst to heat exhaust gas being advanced to the SCR catalyst, determining a flow rate of fuel being supplied to the burner, predicting the amount of fuel to be further supplied to the burner based upon the determined fuel flow rate, and supplying the predicted amount of fuel to the burner. - View Dependent Claims (2, 3, 4, 5)
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6. A method of operating an emission abatement system comprising a selective catalytic reduction (SCR) catalyst, the method comprising:
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supplying fuel to a fuel-fired burner positioned upstream of the SCR catalyst to heat exhaust gas being advanced to the SCR catalyst, determining a temperature of the exhaust gas at an inlet of the burner, predicting the amount of fuel to be further supplied to the burner based upon the temperature of the exhaust gas at the inlet of the burner, and supplying the predicted amount of fuel to the burner. - View Dependent Claims (7, 8, 13)
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9. An emission abatement assembly comprising:
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a selective catalytic reduction (SCR) catalyst, a fuel fired burner positioned upstream of the SCR catalyst and operable to heat exhaust gas being advanced to the SCR catalyst, a first sensor configured to determine a flow rate of fuel being supplied to the burner and generate a response thereto, an electronically-controlled fuel delivery assembly operable to deliver fuel to the burner, and a controller electrically coupled to the fuel delivery assembly, the controller comprising (i) a processor, and (ii) a memory device electrically coupled to the processor, the memory device having stored therein a plurality of instructions which, when executed by the processor, cause the processor to; determine a flow rate of fuel based upon the signal generated by the first sensor, predict the amount of fuel to be further supplied to the burner based upon the determined fuel flow rate, and operate the fuel delivery assembly to supply the predicted amount of fuel to the burner based upon the determined fuel flow rate. - View Dependent Claims (10, 11, 12)
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Specification