US Patent No. 10,557,433

SYSTEM AND METHOD FOR DETECTING A FAULT CONDITION ASSOCIATED WITH A VALVETRAIN OF AN ENGINE


Patent No. 10,557,433
Issue Date February 11, 2020
Title System And Method For Detecting A Fault Condition Associated With A Valvetrain Of An Engine
Inventorship Michael Campagna, Chillicothe, IL (US)
Andrew Billing, Bloomington, IL (US)
Dereck Heffron, Peoria, IL (US)
Brian Wheeler, Metamora, IL (US)
Assignee Caterpillar Inc., Peoria, IL (US)

Claim of US Patent No. 10,557,433

1. A fault detection system for an engine having a first bank of cylinders and a second bank of cylinders therein, the fault detection system comprising:a first plurality of sensors disposed on the engine,
the first plurality of sensors being configured to measure one or more operating parameters of the engine;
a second plurality of sensors disposed on the engine,
the second plurality of sensors being configured to measure a pair of values for at least one performance parameter associated with the engine,
wherein the pair of values for the at least one performance parameter correspond to respective measurements of the at least one performance parameter that are taken from each of the first bank of cylinders and the second bank of cylinders; and
a processor communicably coupled to the first plurality of sensors and the second plurality of sensors,
the processor being configured to:
determine that the one or more operating parameters satisfy one or more corresponding boundary conditions for the engine;
determine, based on determining that the one or more operating parameters satisfy the one or more corresponding boundary conditions, a difference in magnitude of the pair of values for the at least one performance parameter;
compute, based on the difference in magnitude of the pair of values, a measure of variation of the at least one performance parameter in a time segment;
determine that the measure of variation of the at least one performance parameter satisfies a limit for the engine;
determine, based on determining that the measure of variation of the at least one performance parameter satisfies the limit for the engine, whether the measure of variation satisfies the limit, for the engine, for at least a particular period of time; and
flag a valvetrain as faulty when the measure of variation satisfies the limit, for the engine, for at least the particular period of time.