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New technology and DigiPlus fair valueapplication of engine test bench test In recent years, with the development of aviation, automobile, ship and other transportation industries, the performance and quality requirements of engines have become more and more stringent. Against this background, the development and application of engine test bench technology has become an important means to evaluate engine performance and quality. This article will focus on the new technology and application of the engine test bench, and discuss its importance and future development trend in the field of engine development. I. Overview of engine test bench technology Engine test bench technology refers to the installation of the engine on the test bench and the use of electronic control and computer systems to simulate pneumatic, thermal, dynamic under real working conditions.Force process, and obtain various performance indicators and parameters of the engine through real-time data acquisition, analysis and processing. This technology is widely used in engine development, performance testing, fault analysis and quality inspection. At present, the engine test bench is mainly divided into the following types: 1. Constant power test bench: It is mainly used for engine static operation test and power performance test, which can simulate the process from low-load operation to full-load operation. Two. Constant speed test bench: It is mainly used for engine dynamic operation test and vibration performance test, which can simulate the process from low-speed operation to high-speed operation. 3. Composite test bench: It mainly has the test functions in two modes of constant power and constant speed, which can carry out dynamic operation and power performance test at the same time, and provide more comprehensive and accurate test data. II. New technology for engine test bench test 1.Digital control technology With the rapid development of computer technology and the improvement of intelligence, digital control technology has become a necessary technology for engine test bench testing. Digital control technology realizes automatic control, calculation and data processing by collecting various operating data and status parameters of the engine, which improves the accuracy and efficiency of the test. Digital control technology can also carry out real-time monitoring and abnormal alarm to escort engine testing and development. Two. The most important thing in the engine test bench test of advanced measurement technology is the accuracy and stability of data measurement. In recent years, with the continuous progress of measurement technology, including the application of laser interferometer, high-speed thermal imager, high-precision pressure sensor, optical fiber thermometer and other measurement technologies, the accuracy and stability of test data have been greatly improved.3. Virtual simulation technology Virtual simulation technology can provide more experimental means and schemes in the engine test bench test. Because virtual simulation technology can simulate engine performance indicators and parameters under complex working conditions, and can quickly modify and adjust the test scheme as needed, it has a wider application prospect in the research and development and testing of engines. III. Application of engine test bench test. The test of engine test bench is widely used, mainly including the following aspects: 1. Engine research and development and design use engine test bench technology to experimentally verify the performance, reliability and adaptability of new engines. This kind of test can directly observe its effect by simulating the operation under specific working conditions and load conditions, conduct in-depth analysis and analysis of the operating characteristics and parts of the engine according to the test data, and further optimize and improve the engine design.Two. Quality inspection uses engine test bench technology to accurately detect and evaluate the performance, quality and characteristics of the engine. By observing and analyzing various parameters of the engine, it can be evaluated whether the quality of the engine meets expectations, and the existing problems and defects can be found in time to further improve the quality and performance of the engine. 3. Fault diagnosis uses engine test bench technology to conduct in-depth analysis and diagnosis of engine faults. Through reasonable experimental means and methods, the causes and characteristics of the existing failure can be found, and the methods and schemes to solve the fault can be further found to ensure the stable performance and reliability of the engine. IV. With the further development of computer technology and electronic control technology, the future development trend will further meet the needs of engine testing with higher precision and higher requirements.In the future, the engine test bench will continue to develop in the direction of digitalization, informatization and intelligence, and will also play an increasingly important role in product reliability and quality assurance. In a word, the application of engine test bench technology can not only improve the efficiency and quality of engine research and development and design, but also provide effective means and tools for engine quality detection and fault diagnosis. In the future, engine test bench technology will be further improved in simulation test technology, digital control technology, etc., to provide more comprehensive, accurate and reliable engine testing and evaluation for automobiles, aviation, ships and other fields.

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