Development and validation of a diagnosis method for diesel engines

Book · Tue Dec 31 04:00:00 EST 1996

OSTI ID:483964

Kouremenos, D A; Rakopoulos, C D; Hountalas, D T ^[1]

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1. National Technical Univ. of Athens (Greece). Mechanical Engineering Dept.

A serious problem for the service engineer is their maintenance and tuning in order to obtain maximum performance and reliable operation during their operational lifetime. Another serious problem is the detection of faults and their cause especially in the case when the engine does not function properly, i.e., low power output or high exhaust gas temperature. Up to now various techniques have been used for diesel engine monitoring and fault diagnosis that are mainly statistical. These techniques have serious disadvantages since they cannot be applied generally but have to be developed for the specific engine under consideration and fail to provide the actual cause in the case of a fault. To overcome these problems a new method is proposed in the present work for engine monitoring and fault diagnosis. This method allows to know the condition of the engine at each time instant and to determine if a fault exists. The method is based on a thermodynamic simulation model and on the processing of pressure diagrams taken from the engine cylinder and the high pressure fuel pipe. Using this method one can determine the actual cause for a fault and the condition of the engine and its subsystems. In this way one can save both money and time since one needs only to conduct repairs that are actually required instead of making them on a time basis.

• OSTI ID: 483964
• Report Number(s): CONF-961105--; ISBN 0-7918-1527-7
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
DIAGNOSTIC TECHNIQUES
DIESEL ENGINES
EXPERIMENTAL DATA
FUEL INJECTION SYSTEMS
MAINTENANCE
THERMODYNAMICS
TURBOCHARGERS
VALIDATION