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Cleaning up, breaking down
| 题名： | Cleaning up, breaking down |
| 正文语种： | eng |
| 作者： | Richard Simpson |
| 摘要： | The great clean-up of heavy-duty exhaust emissions ranks as an engineering achievement of our time. As a reminder, tailpipe emissions of NOx, unburned hydrocarbons, and particles are a tiny fraction of what they were when the first European emissions regulations appeared. For example, the Euro I limit of 1992 specified a maximum output of 8.0g/kWh of NOx and 612mg/ kWh of particulate matter. By 2013, when Euro VI had come into force, NOx limits were down to 0.4g/kWh and PM to 10mg/kWh, and there was also a limit on the total number of particles emitted. It takes a fleet of today's Euro VI trucks to produce the same quantity of toxic exhaust as a single Euro I truck would have done in 1992. |
| 出版年： | 2023 |
| 期刊名称： | Transport engineer |
| 期： | May |
| 页码： | 20-21 |
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