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内燃机的排气主要以未燃烧的烃、CO、NO、多环芳烃、醛、微尘所构成。本文系比较含铅汽油及所谓高辛烷值不含铅汽油在内燃机排气中有无区别,对环境的污染究竟有多少改善。1.一些名辞的定义和背景。辛烷值:汽油的辛烷值系以它的抗震能力来衡量。理想的燃油在内燃机中应稳定地和均匀地燃烧,假如燃烧过速,在燃烧室内因高频压力波动而产生一种尖锐的金属音响叫做“震爆”(Knock)。辛烷值以
The exhaust of the internal combustion engine is mainly composed of unburned hydrocarbons, CO, NO, PAHs, aldehydes and dust particles. This article is to compare the leaded gasoline and the so-called high-octane unleaded petrol whether there is any difference in the exhaust gas of the internal combustion engine, how much the environmental pollution has been improved. 1. Some naming of the definition and background. Octane number: The octane number of gasoline is measured by its seismic capacity. The ideal fuel should burn steadily and uniformly in the internal combustion engine, producing a sharp metallic sound called “Knock” in the combustion chamber due to high-frequency pressure fluctuations if it burns too fast. Octane value