This technology can be used to determine the timing and means of engine repair, in order to achieve the most economical use cost in its life cycle. As a result, a large number of testing equipment and instruments were idle. Some units have countless specific problems to be solved, and lack in-depth understanding and analysis of the use and performance of the detection and diagnosis equipment and the technical level of the maintenance personnel. 2.

. Since the 1980s, China has been continuously researching and developing engine detection and diagnosis technology, but due to the lack of maintenance personnel Participation, lack of understanding of the actual use of the engine, so that the detection and diagnosis technology is out of touch with the actual application. Therefore, some seemingly advanced testing equipment and instruments cannot directly determine the nature and location of the fault and evaluate the technical status of the engine, making it difficult to find users for a while. Lack of communication between the development and development of detection and diagnosis technology and users.

There is blindness in the application of engine detection and diagnosis technology. , But blindly purchased testing equipment and instruments, even just for greed, decorating the facade, and catering to the higher-level acceptance. The slightest delay in the maintenance time, the more serious damage occurs.

Whether to take early predictive maintenance and repair. If the industry can regularly organize some experience exchange activities, or conduct some academic activities and on-site observations of Mechanical Bearing 699 detection and diagnosis technology, it will increase the promotion and application of this technology, and will also promote the research and development of detection equipment and instruments. 2. The application status of engine detection and diagnosis technology 1. However, the current analysis of the engine's technical status, fault judgment and maintenance methods still use the backward methods decades ago. 3.

The practical detection technology of the engine is based on the comparison and change trend of certain indicators of the engine in the normal and abnormal states, qualitative and quantitative analysis of the engine's technical status and hidden troubles of failure, providing science for fault diagnosis and decision-making

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