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奥地利AVL公司生产的AVL657数据采集分析系统，是一套对内燃机瞬变过程进行高速数据采集、处理和存储的测试设备。阐述了该系统的数据文件存储格式的转换原理和方法，以及在柴油机运转条件下喷油过程测量、多缸机单缸进气充量测量的计算原理和程序编制。
AVL65 Austrian AVL657 data acquisition and analysis system, is a set of high-speed data acquisition, processing and storage of the transient process of the internal combustion engine test equipment. The conversion principle and method of data storage format of the system are expounded. And the calculation principle and programming of fuel injection measurement, multi-cylinder single cylinder intake charge measurement under diesel engine operating condition are described.