Regeneration diagnostic methods and systems
AssigneeGM Global Technology Operations LLC
InventorsZhiping Steven Liu, Eugene V. Gonze, Janean E. Kowalkowski
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Abstract
A method of monitoring an exhaust treatment system of a vehicle is provided. The method includes: determining a modeled resistance of exhaust flow in the exhaust treatment system; determining a measured resistance of exhaust flow in the exhaust treatment system; evaluating the modeled resistance and the measured resistance to determine a fault status; and generating at least one of a warning signal and a message based on the fault status.
Claims20
A method of monitoring an exhaust treatment system of a vehicle, comprising:
- determining a modeled resistance of exhaust flow in the exhaust treatment system;
- determining a measured resistance of exhaust flow in the exhaust treatment system;
- evaluating the modeled resistance and the measured resistance to determine a fault status;
- and
- generating at least one of a warning signal and a message based on the fault status.
A system for monitoring an exhaust treatment system of a vehicle, comprising:
- a first module that determines a modeled resistance of exhaust flow in the exhaust treatment system;
- a second module that determines a measured resistance of exhaust flow in the exhaust treatment system;
- a third module that evaluates the modeled resistance and the measured resistance to determine a fault status;
- and
- a fourth module generates at least one of a warning signal and a message based on the fault status.
A vehicle, comprising:
- a particulate filter;
- and
- a control module that determines a modeled resistance of the particulate filter, that determines a measured resistance of the particulate filter, that evaluates the modeled resistance and the measured resistance to determine a fault status, and that generates at least one of a warning signal and a message based on the fault status.
Dependencies are inferred from the claim text.