In addition, the effects of the swirl ratio and the diameter of the nozzle hole on the combustion process and the NOX emissions also were investigated.

此外，研究了涡流强度和喷孔直径对柴油机燃烧过程以及NOX排放的影响。

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For control of NOx emissions by power generating and cogeneration units burning other type of fuels, please refer to this Technology Policy for implementation.

燃用其他燃料的发电和热电联产机组的氮氧化物排放控制，可参照本技术政策执行。

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Compared with the conventional diesel engine, the soot emissions of dual fuel engine reduce dramatically and NOX emissions decrease, while HC and co emissions increase slightly.

与原柴油机相比，双燃料发动机的碳烟排放大幅度下降，NOX排放降低，而HC和CO排放有所增加。

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By optimizing the split-cycle concept, the Scuderi engine is expected to reduce NOx emissions up to 80 percent and improve fuel efficiency by 50 percent, compared to a conventional gasoline engine.

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The findings suggested that the plants' NOx emissions could result in a 35% increase in the number of days when ozone levels exceeded the upper threshold set by the US Environment Protection Agency.

BBC: Invasive plant 'increases ozone pollution'

By the time a car achieves Euro V standards, emissions of NOx and particulate matter are negligible.

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