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US 8,769,937 B2Granted
Soot sensor monitoring
AssigneeGM Global Technology Operations LLC
InventorsOgnyan N. Yanakiev, David E. Winn, Eric M. Hall, Christopher P. Musienko
Life of this patent
Estimating the term…
Abstract
A control method for monitoring a soot sensor of an exhaust treatment system is provided. The control method includes: determining when regeneration has completed; comparing soot sensor data to an estimated soot data based on the determining; and generating a message based on the comparing.
Claims20
A control method for monitoring a soot sensor of an exhaust treatment system of a vehicle, comprising:
- determining when regeneration has completed;
- comparing soot sensor data to an estimated soot data based on the determining, wherein the estimated soot data is based on particulate filter efficiency and an estimated soot generated from an engine of the exhaust treatment system;
- generating a message based on the comparing;
- and
- connecting at least one of a telematics system and a technician tool to the vehicle for retrieving the message.
2 more elements
A control system that monitors a soot sensor of an exhaust treatment system, comprising:
- a first module implemented by at least one processor and configured to determine when regeneration has completed;
- a second module implemented by the least one processor and configured to compare soot sensor data to an estimated soot data based on the determining, wherein the estimated soot data is based on particulate filter efficiency and an estimated soot generated from an engine of the exhaust treatment system;
- and
- a third module implemented by the at least one processor and configured to generate a message based on the comparing.
1 more element
An exhaust system of an engine, comprising:
- a particulate filter;
- a soot sensor disposed in proximity to the particulate filter;
- and
- a control module implemented by at least one processor and configured to:
- determine when regeneration has completed;
- compare soot sensor data to an estimated soot data based on the determining, wherein the estimated soot data is based on particulate filter efficiency and an estimated soot generated from an engine of the exhaust system;
- and
- generate a message based on the comparing.
5 more elements
Dependencies are inferred from the claim text.