Method and apparatus for monitoring ash accumulation in a particulate filter of an emission abatement assembly
First Claim
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1. A method of monitoring ash buildup in a particulate filter of an emission abatement assembly, the method comprising the steps of:
- regenerating the particulate filter to remove soot accumulated therein, generating a control signal subsequent to the regenerating step, and determining a level of ash accumulation in the particulate filter in response to generation of the control signal.
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Abstract
A method of monitoring ash buildup in a particulate filter includes determining particulate accumulation in the filters subsequent to filter regeneration to determine when the filter is in need of servicing to remove ash therefrom. An emission abatement assembly is also disclosed.
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Citations
18 Claims
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1. A method of monitoring ash buildup in a particulate filter of an emission abatement assembly, the method comprising the steps of:
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regenerating the particulate filter to remove soot accumulated therein, generating a control signal subsequent to the regenerating step, and determining a level of ash accumulation in the particulate filter in response to generation of the control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An emission abatement assembly, comprising:
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a particulate filter, a fuel-fired burner positioned upstream of the particulate filter, a sensor configured to sense the accumulation level of particulate matter within the particulate filter, and a controller electrically coupled to the sensor, 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;
operate the fuel-fired burner to regenerate the particulate filter to remove soot accumulated therein, generate a control signal subsequent to operation of the fuel-fired burner, and monitor output from the sensor to determine a level of ash accumulation in the particulate filter in response to generation of the control signal. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of monitoring ash buildup in a particulate filter of an emission abatement assembly, the method comprising the steps of:
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determining the end of a regeneration cycle of the particulate filter and generating a control signal in response thereto, and determining a level of particulate accumulation in the particulate filter in response to generation of the control signal. - View Dependent Claims (15, 16, 17, 18)
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Specification