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S21 Vibrações e Análise Modal |
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Title:
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DIAGNÓSTICOS DE MOTORES DIESEL PELA MONITORAÇÃO DA COMBUSTÃO
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Summary :
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ABSTRACT. THIS PAPER PRESENTS A COMPUTER-AIDED FAULT ANALYSIS OF DIESEL ENGINES BY COMBUSTION MONITORING. THE BASIS FOR THE MONITORING SYSTEM IS THE COMPARISON OF THE STANDARD MODEL CURVE OF CYLINDER PRESSURE VERSUS THE CRANK ANGLE ENGINE WITH CURVE OBTAINED AT ENGINE OPERATION CONDITION.
THE DIAGNOSIS IS BASED ON A FAULT TREE ANALYSIS THAT RELATES DEVIATIONS FOUND BETWEEN OPERATION AND MODEL CURVES WITH THE POSSIBLE FAULTS OF THE ENGINE AND ITS CAUSE EFFECT. OPERATING PARAMETERS READINGS ARE COMPARED TO ALLOWABLE VALUES AND THE DEVIATIONS PRESENTED AS "LOW", "NORMAL" AND "HIGH". THE WHOLE ANALYSIS IS THE KNOWLEDGE BASE FOR A EXPERT SYSTEM USED FOR PREDICTIVE MAINTENANCE OF DIESEL ENGINES.
KEY WORDS: DIAGNOSIS, COMBUSTION, MONITORING, ENGINES, DIESEL
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Author :
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Belchior, Carlos R. Pereira
Coêlho, Raimundo N. Costa
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Paper View :
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