First, this paper applies the method of theory analysis combining test, studying how to make biodiesel and engine's combustion and emission.

首先，文中运用理论分析和实验研究相结合的方法，对生物柴油的制取和在发动机上燃烧与排放情况进行了研究。

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Methods: 7 common-used nonmetal materials were burned in the combustion test box; and qualitative analysis was done by detective apparatus and GC-MS.

方法：将7种常用非金属材料在燃烧试验箱中燃烧，用检测仪器和GC - MS进行定性分析。

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Referring to GB18352 test operate-condition, in order to test the emission of CNG-engine, and combustion condition in the cylinder is inspected using combustion-analysis instruments.

参照GB18352的试验运转循环工况的规定，在发动机台架上对汽油机燃用cng的排放污染物进行测试，并利用燃烧分析仪对气缸内燃烧状况进行辅助监测。

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