Lubrication health monitoring system
AssigneeGM Global Technology Operations LLC
InventorsAzeem Sarwar, James A. Goodall, Bryan K. Pryor
Life of this patent
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Abstract
A computer-implemented method when executed by data processing hardware causes the data processing hardware to perform operations. The operations include collecting, via a health monitoring application, lubrication data at a crank phase of an engine of a vehicle, determining, at the crank phase, a pressure rise difference in oil pressure between a measured pressure and an estimated pressure, determining, via the health monitoring application, whether the measured pressure deviates from the estimated pressure at the crank phase, and generating, based on the measured pressure deviating from the estimated pressure at the crank phase, an alert.
Claims20
A computer-implemented method when executed by data processing hardware causes the data processing hardware to perform operations comprising:
- collecting, via a health monitoring application, lubrication data at a crank phase of an engine of a vehicle;
- determining, at the crank phase, a pressure rise difference in oil pressure between a measured pressure and an estimated pressure;
- determining, via the health monitoring application, whether the measured pressure deviates from the estimated pressure at the crank phase;
- and
- generating, based on the measured pressure deviating from the estimated pressure at the crank phase, an alert.
A computer-implemented method when executed by data processing hardware causes the data processing hardware to perform operations comprising:
- collecting, via a health monitoring application, lubrication data at a shutdown phase of an engine of a vehicle;
- determining, at the shutdown phase, a rate of change in oil pressure at the engine;
- executing, at the health monitoring application, a normalization function configured to normalize the rate of change against an oil temperature of the lubrication data;
- determining, via the health monitoring application, whether the rate of change deviates from a nominal change;
- and
- generating, based on the rate of change deviating from the nominal change, an alert.
A lubrication health monitoring system for a vehicle, the lubrication health monitoring system comprising:
- data processing hardware;
- and
- memory hardware in communication with the data processing hardware, the memory hardware storing instructions that when executed on the data processing hardware cause the data processing hardware to perform operations comprising:
- executing, at a crank phase of an engine of the vehicle, a first lubrication system health check, the first lubrication system health check including:
- collecting, via a health monitoring application, lubrication data at the crank phase of an engine of a vehicle;
- determining, at the crank phase, a pressure rise difference in oil pressure between a measured pressure and an estimated pressure;
- determining, via the health monitoring application, whether the measured pressure deviates from the estimated pressure at the crank phase;
- and
- generating, based on the measured pressure deviating from the estimated pressure at the crank phase, an alert;
- and
- executing, at a shutdown phase of the engine, a second lubrication system health check, the second lubrication system health check including:
- collecting, via the health monitoring application, lubrication data at the shutdown phase;
- determining, at the shutdown phase, a rate of change in oil pressure;
- executing, at the health monitoring application, a normalization function, the normalization function configured to normalize the rate of change against an oil temperature of the lubrication data;
- determining, via the health monitoring application, whether the rate of change deviates from a nominal change;
- and
- generating, based on the rate of change deviating from the nominal change, a shutdown phase alert.
Dependencies are inferred from the claim text.