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本文主要介绍在汽油机与三元催化转化器之间两个不同位置安装自动补气试验研究的装置、方法和结果，并给出补气装置处于不同位置时，发动机废气中反映三元催化转化器转化效果的HC、CO和NO含量。据此可对自动补气装置的最佳位置进行分析。
This paper mainly introduces the devices, methods and results of automatic gas supplement test in two different positions between the gasoline engine and the three-way catalytic converter. When the gas supply device is in different positions, the exhaust gas of the engine reflects the three-way catalytic converter HC, CO and NO content of the transformation effect. Based on this, the optimum position of the auto-aeration device can be analyzed.