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US 8,301,362 B2Granted
Method and system for generating a diagnostic signal of an engine component using an in-cylinder pressure sensor
AssigneeGM Global Technology Operations LLC
InventorsKenneth J. Buslepp, Douglas R. Verner, Joseph R. Dulzo, Jonathan T. Shibata, Daniel G. Brennan, Joshua Cowgill
Life of this patent
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Abstract
A method and a control module for diagnosing an engine component function includes a comparison module comparing an in-cylinder pressure signal to a threshold and a fault indication module generating a diagnostic signal for an engine component in response to comparing.
Claims19
A method comprising:
- generating an in-cylinder pressure signal for an engine;
- comparing the in-cylinder pressure signal to a threshold;
- and
- generating a diagnostic signal for a component of the engine in response to the comparing,
- wherein comparing the in-cylinder pressure signal to the threshold comprises comparing the in-cylinder pressure signal to a profile.
2 more elements
A method comprising:
- generating an in-cylinder pressure signal for an engine;
- comparing the in-cylinder pressure signal to a threshold;
- and
- generating a diagnostic signal for a component of the engine in response to the comparing,
- wherein generating the diagnostic signal for the component of the engine comprises generating the diagnostic signal for cylinder valves.
2 more elements
A control system comprising:
- a comparison module comparing an in-cylinder pressure signal to a threshold, wherein comparing the in-cylinder pressure signal to the threshold comprises comparing the in-cylinder pressure signal to a profile;
- and
- a fault indication module generating a diagnostic signal for a component of an engine in response to the comparing.
Dependencies are inferred from the claim text.