评估设计用于越野和建筑应用的低NO引擎
Lucy J Webster1, Ryan Ballard2, Tom Beamish2
1Wolfson Atmospheric Chemistry Laboratories, University of York, Heslington, York, YO10 5DD, UK. ally.lewis@ncas.ac.uk.
Environmental science. Processes & impacts
|January 31, 2025
概括
与柴油相比,内燃机 (H2ICE) 在非公路移动机械 (NRMM) 中显著减少氧化 (NOx) 排放. 即使没有先进的后处理,H2ICE也为城市环境提供了相当大的空气质量好处.
科学领域:
- 内部燃烧发动机 内部燃烧发动机
- 环境科学 环境科学
- 汽车工程 汽车工程
背景情况:
- 非公路移动机械 (NRMM) 需要脱碳解决方案.
- 内燃机 (H2ICE) 是难以电气化的行业的一个潜在途径.
- 对于对效率和空气质量均优化的H2ICE存在有限的研究.
研究的目的:
- 分析来自H2ICE变种的排气管氧化 (NOx) 排放.
- 将H2ICE排放与当代柴油发动机在非公路过渡周期 (NRTC) 上进行比较.
- 评估在NRMM中采用H2ICE的空气质量副效益.
主要方法:
- 对四种火花点火H2ICE变种 (∼55 kW) 的动力计测试.
- 对一个H2ICE变种的发动机排放分析.
- 在NRTC中比较H2ICE和柴油排放.
- 具有和没有选择性催化降解和颗粒过器 (SCRF) 后处理的H2ICEs的评估.
主要成果:
- 所有使用瘦燃烧的H2ICE变种在NRTC中产生的NOx比柴油低得多.
- 使用SCRF后处理的H2ICE实现了1.90 mg kWh-1NOx (与柴油相比降低了>99%).
- 使用滑催化剂 (没有SCRF) 的H2ICE排放了63.7 mg kWh-1NOx (与柴油相比>50倍的改善).
结论:
- 低NOxH2ICE为NRMM,特别是建筑设备提供了显著的短期空气质量改善.
- H2ICE是一种可行的柴油替代品,比生物燃料提供更大的城市空气质量好处.
- 需要在系统层面进行评估,以权衡先进后处理的好处与成本和潜在的氨滑.
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