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Euro 7 exhaust aftertreatment
| 题名： | Euro 7 exhaust aftertreatment |
| 正文语种： | eng |
| 作者： | Toby Clark |
| 摘要： | Although the approaching Euro 7 emissions rules will mean sharp tightening of the current emissions limits, they are not meant to eliminate diesel vehicles. As the UK's Explanatory Memorandum (14598/22) on the new regulations puts it, "Limits for buses and lorries... are to become more stringent... to reflect the potential for existing technologies to further reduce emission levels." The regulations come into force for cars and light commercial vehicles on 1 July 2025, but do not affect trucks, buses and coaches until 1 July 2027. And while the limits are not yet confirmed, they are not likely to change from the current proposals. Euro 7, which does away with the distinction for light and heavy vehicles, and with it the roman numerals, means a dramatic reduction in NOx emissions, and a requirement that they be limited even during cold-start conditions. While the Euro Ⅵ limit was 400mg/kWh, the proposals are for 350mg/kWh cold, and just 90mg/kWh at normal running temperatures (see table, right). These limits need to be met across ambient temperatures from 0-35℃, with an 'extended' range of -10℃ to 45℃ in some applications. |
| 出版年： | 2023 |
| 期刊名称： | Transport engineer |
| 期： | Jun. |
| 页码： | 12-14 |
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