This paper analyses the technical functions of NJ212I diesel engine developed by JMC Tractor Company and expounds its advantages and rationality in power saving and environment protection.

• 摘要对江铃拖拉机公司开发的拖拉机用NJ212I柴油机进行技术性能试验分析，以论证其节能环保等方面的先进合理性。