Systems and methods for diagnosing auxiliary equipment associated with an engine
First Claim
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1. A method for auxiliary equipment electrically coupled to a generator that is operationally connected to a reciprocating engine, comprising:
- measuring a dc-link parameter associated with the generator during operation using a dc-link sensor; and
diagnosing a condition of the auxiliary equipment based on frequency content of the dc-link parameter using at least a processor.
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Abstract
Diagnosing auxiliary equipment associated with an engine. A condition of the auxiliary equipment is diagnosed based on information provided by signals from a generator operationally connected to the auxiliary equipment or other signals associated with the engine. Different types of degradation are distinguished based on discerning characteristics within the information. Thus, a degraded auxiliary equipment component can be identified in a manner that reduces service induced delay.
41 Citations
26 Claims
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1. A method for auxiliary equipment electrically coupled to a generator that is operationally connected to a reciprocating engine, comprising:
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measuring a dc-link parameter associated with the generator during operation using a dc-link sensor; and diagnosing a condition of the auxiliary equipment based on frequency content of the dc-link parameter using at least a processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for auxiliary equipment operationally coupled to a rotating shaft of a reciprocating engine, comprising:
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measuring a rotating shaft speed of the reciprocating engine during operation using a speed sensor; and diagnosing a condition of the auxiliary equipment based on frequency content of the shaft speed using at least a processor. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A vehicle system, comprising:
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a generator; auxiliary equipment electrically coupled to the generator; a dc-link sensor for measuring a dc-link parameter associated with the generator during operation; and a controller including instructions configured to; sample and transform the measured dc-link parameter; identify frequency content of the dc-link parameter; and diagnose a condition of the auxiliary equipment based on the frequency content of the dc-link parameter. - View Dependent Claims (20, 21, 22, 23)
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24. A vehicle system, comprising:
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a reciprocating engine having a rotating shaft; auxiliary equipment operatively coupled to the rotating shaft; a sensor for measuring a speed of the rotating shaft over time during operation; and a controller including instructions configured to; sample and transform the measured speed; identify frequency content of the speed; and diagnose a condition of the auxiliary equipment based on the frequency content of the speed. - View Dependent Claims (25, 26)
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Specification