US 12,473,853 B2 · Systems and methods for diagnosing component failure

Abstract

Systems and methods for diagnosing at least one component in an exhaust aftertreatment system are provided. The system includes an exhaust aftertreatment system coupled to an engine system, at least one sensor, and at least one processing circuit structured to: receive initial sensor data; determine an initial parameter value based on the initial sensor data; determine that the initial parameter does not satisfy an initial threshold; perform operations to diagnose at least one component of the exhaust aftertreatment system comprising: causing the engine system to operate through a sequence of a plurality of engine outputs; receiving a plurality of sensor data, each of the plurality sensor data corresponding to at least one of the plurality of engine outputs; comparing each of the plurality of sensor data to a corresponding threshold; and diagnosing the at least one component based on the comparison.

Claims20

Dependent claims

A system, comprising:

an exhaust aftertreatment system coupled to an engine system such that the exhaust aftertreatment system receives exhaust gas from the engine system;
at least one sensor;
and
at least one processing circuit coupled to the at least one sensor and the exhaust aftertreatment system, the at least one processing circuit structured to:
receive an indication to diagnose at least one component of the exhaust aftertreatment system;
and
perform operations to diagnose the at least one component of the exhaust aftertreatment system responsive to receiving the indication, the operations comprising:
causing the engine system to operate through a sequence of a plurality of engine outputs;
receiving, from the at least one sensor, a first set of sensor data corresponding to a first engine output;
comparing the first set of sensor data to a first threshold;
and
diagnosing the at least one component based on the comparison between the first set of sensor data and the first of threshold, the diagnosis indicating a failure type.

9 more elements

A method for diagnosing at least one component in an exhaust aftertreatment system, the method comprising:

causing an engine to operate through a sequence of a plurality of engine outputs;
receiving a first set of sensor data corresponding to a first engine output of the plurality of engine outputs and a second set of sensor data corresponding to a second engine output of the plurality of engine outputs;
comparing the first set of sensor data to a first threshold and the second set of sensor data to a second threshold;
and
diagnosing the at least one component based on the comparison, the diagnosis indicating a first failure type based on the comparison indicating that the second set of sensor data satisfies the second threshold.

2 more elements

A non-transitory computer readable medium having computer-executable instructions embodied therein that, when executed by at least one processor of a computing system, cause the computing system to perform operations comprising:

causing an engine to operate through a sequence of a plurality of engine outputs;
receiving a plurality of sensor data, each of the plurality sensor data corresponding to at least one of the plurality of engine outputs;
comparing each of the plurality of sensor data to a corresponding threshold of a plurality of thresholds;
and
diagnosing the at least one component based on the comparison between the plurality of sensor data and the plurality of thresholds, the diagnosis indicating a failure type.

2 more elements

Dependencies are inferred from the claim text.

Systems and methods for diagnosing component failure

Life of this patent

Systems and methods for diagnosing component failure

Life of this patent

Abstract

Claims20