系列和系列平行插电式混合动力电动汽车在实际驾驶条件下产生的氨排放
Miao Wen1, Xin Wang1, Haiguang Zhao2
1National Laboratory of Automotive Performance & Emission Test, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, PR China.
Journal of hazardous materials
|June 20, 2025
概括
混合动力电动汽车的测试显示,燃料优先模式和电池充电维持状态显著增加氨排放. 频繁的发动机重新启动和剧烈的加速度也会在现实驾驶过程中导致更高的氨产量.
科学领域:
- 汽车工程 汽车工程
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 混合动力电动汽车 (HEV) 提供环境效益,但可以产生氨 (NH3) 排放.
- 理解影响NH3排放的因素对于开发更清洁的混合动力技术至关重要.
研究的目的:
- 研究能源管理策略和驾驶条件对混合动力电动汽车氨排放的影响.
- 量化不同混合架构和运行状态的氨排放量.
主要方法:
- 在两个系列混合动力电动汽车 (SHEV) 和一个系列并行混合动力电动汽车 (PSHEV) 上进行了九次实行驾驶排放 (RDE) 测试.
- 多种能源模式 (燃料优先与电力优先) 和电池充电状态 (维持充电与消耗充电).
- 在各种驾驶场景中监控氨排放,包括发动机重新启动和加速.
主要成果:
- 氨排放量因车型而异,在PSHEV的0.9-5.1 mg/km,SHEV的2.7-6.3 mg/km,插电式混合动力电动车 (PHEV) 的10.9-56.9 mg/km之间有很大的差异.
- 燃料优先模式和电荷维持状态与电力优先模式和电荷减耗状态相比显著增加了氨排放量.
- 氨峰值与频繁的内燃机 (ICE) 重启和高 ICE 负载在激烈加速期间相关,特别是在高速.
结论:
- 能源模式和电池SOC是HEV中氨排放的关键决定因素.
- 冰的运行特征,特别是重新启动和负载过渡,显著影响氨的产生.
- 优化能源管理策略和减轻苛刻的ICE操作是减少HEVs氨排放的关键.
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