Particulate filter ash loading prediction method and vehicle using same
AssigneeDeere & Company
InventorsRyan Nevin, Antonio Triana, Danan Dou, Taner Tuken
Life of this patent
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Abstract
A particulate filter ash loading prediction method including the steps of determining a service age for the particulate filter; calculating an ash accumulation rate in the particulate filter; determining a maximum service age for the particulate filter dependent upon the ash accumulation rate; and comparing the service age to the maximum service age. If the service age exceeds the maximum service age then indicating that a service and/or replacement of the particulate filter is needed due to ash loading.
Claims17
A particulate filter ash loading prediction method, comprising the steps of:
- determining a service age for the particulate filter;
- calculating an ash accumulation rate in the particulate filter;
- determining a maximum service age for the particulate filter dependent upon said ash accumulation rate;
- comparing said service age to said maximum service age, if said service age exceeds said maximum service age then indicating that at least one of service and replacement of the particulate filter is needed due to ash loading;
- regenerating the particulate filter dependent upon a delta pressure measurement across the particulate filter and said ash accumulation rate;
- and
- determining a normalized delta pressure adjustment factor using a normalized delta pressure value derived from a calculation that uses a filter delta pressure measurement as an input.
A vehicle, comprising:
- an internal combustion engine;
- a particulate filter connected to said internal combustion engine;
- a controller operatively connected to said internal combustion engine and to said particulate filter, said controller being configured to execute the steps of a method, the method including the steps of:
- determining a service age for the particulate filter;
- calculating an ash accumulation rate in the particulate filter;
- determining a maximum service age for the particulate filter dependent upon said ash accumulation rate;
- comparing said service age to said maximum service age, if said service age exceeds said maximum service age then indicating that at least one of service and replacement of the particulate filter is needed due to ash loading;
- and
- determining a normalized delta pressure adjustment factor using a normalized delta pressure value derived from a calculation that uses a filter delta pressure measurement as an input.
Dependencies are inferred from the claim text.