The Research Of Monitoring System On-line For Automobile Engine

Engine is the main part of automobiles, which provides power to other vehicles. Owing to the complexity of its structure, so many parts and bad operating condition, the Engine is one of the most parts to become failure. And it is important object to be checked and diagnosis.The operating state parameters of Engines and its changing trend closely correlate to Engine performance, its failure and failure develop trend. By monitoring the operating state of Engine real-time, recording and saving these operating state parameters, with the help of the computer and its large storage, theory and statistics analyzing, the working state developing trend and corresponding laws can be found. It is helpful to provide scientific theory foundation for the diagnosis and repair of Engines according to the practical condition, It is the main purpose and the key content of this paper.Grounding on the research results, the author designed a type of test-bed to monitor the operating state of Engine real-time based on compute -controlled. The work includes principle designing, hardware choosing, testing software programming and so on. The test-bed can monitor all sorts of working state parameters of Engine and process these tested and recorded data by use of special software programmed to test and analyze. The author has done some experiments to simulate the general failures of Engines on the designed test-bed. The experimental results support the conclusions of theory analysis.The experimental results show the hardware layout of the monitor system is reasonable, the software design is flexible, the interface is good, the characters are steady, tested data is exact and the operate is easy.The research results of this paper can be used to monitor the working state and failure diagnosis of all sorts of Engines widely. It will provide the technology guarantee for the Engine to operate safely and reliably. After the system modified according to special need, it can be used to other objects for example automobile engineering. At the same time it will be the foundation of the engineering application of the system.