f*****y
发帖数: 142 | 1 very good article on emission control.
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http://www.gatewaycleanair.com/mechanic/air4_3/nox.htm
Emission Controls - Demystifying Oxides of Nitrogen
By Steve Zack
Oxides of Nitrogen (NOx) are one of the four pollutants emitted by internal combustion engines. The others are carbon monoxide (CO), hydrocarbons (HC), and sulfur dioxides (SO2). Like the other three gasses, excessive amounts of NOx are the by-product
of engines operating under something other t |
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