The paper educes the theoretical expressions of power measurement for turbocharged diesel engine under no external load, and designs the data management system based on visual computer language.

• 摘要推导了增压柴油机无负荷测功所用的理论公式，并根据该公式设计了无负荷测功系统，采用可视化编程语言设计了无负荷测功试验数据处理系统，用来对试验过程中的大量试验数据进行处理。