Quality Evaluation And Control Technology Research Of Engine Performance Test

The engine test is essential means which can check engine's power, economic, emission performance and can inspect the manufacture's quality, reliability and wear resistance of engine and parts. It is important aspect of researching, designing, manufacturing the new-type engine, too. The engine is usually tested on test-bed in order to control test's condition and simulate the different load conditions. In this paper, the engine performance test projects, methods and supporting facilities in the status quo at home and abroad are introduced, and the main problems of engine performance test and control technologies are analyzed.First of all, for the situation of the fixed engine bench test performance, to enable the test data be comparable, the law that total running time of engine impact on performance parameters is studied; In order to guarantee that the engine test quality and the reliability, it is necessary to analyze and control main factors that affect the engine performance experiment. The factors that mainly include the personnel, machine, the material, methods, environment and so on, are separately analyzed. Based on the theory of probability, the relevance parsing technique and so on, according to the specific circumstances of the laboratory, the major effect factors and the role of law are studied, and the relationship between the major effect factors and engine performance targets are established. Environmental conditions of engine performance test are summed up. The measurement uncertainty evaluation theory is introduced, the measurement uncertainty of the test data is evaluated. Finally, accroding to the actual data of recent tests, the conclusions are verified and corrected, and control strategies and recommendations are put forward.The data is provided by the Ministry of Communications motor transport profession energy-use center engine laboratory. As one of the laboratory internal quality plan, the findings would provide the support to internal improvement and the correlation technique exchange.