驾驶特征参数和车型对实际驾驶周期的燃油消耗和排放性能的影响
Elmira Bagheri1, Masoud Masih Tehrani1, Mohammad Azadi2
1School of Automotive Engineering, Iran University of Science and Technology, Tehran, Iran.
PloS one
|January 13, 2025
概括
了解车辆排放量和燃料消耗是可持续运输的关键. 这项研究揭示了驾驶模式和车辆类型,包括混合动力和轮增压车型,如何影响现实世界的环境性能.
科学领域:
- 环境科学 环境科学
- 汽车工程 汽车工程
- 可持续的运输可持续的运输
背景情况:
- 对于可持续运输的日益增长的需求需要了解现实世界的驾驶影响.
- 车辆类型,驾驶特性和动力系统技术显著影响排放和燃油经济性.
- 真实驾驶场景提供了比标准化测试更准确的评估.
研究的目的:
- 分析驾驶参数,车型及其对燃料消耗和排放的影响之间的关系.
- 在德黑兰的各种路线上比较传统和混合动力汽车的性能.
- 评估不同动力系统 (混合动力,轮增压,自然吸气) 和车身风格 (车,SUV) 对环境指标的影响.
主要方法:
- 用K-means和PCA算法为四个不同的德黑兰路线生成了19个真实驾驶周期.
- 基于他们的规格,使用MATLAB/Simulink模拟了四辆常规车辆和一辆混合动力车辆.
- 计算了每个车辆的十二个驾驶特征参数,燃料消耗和排放 (CO,NOx,HC,CO2).
主要成果:
- 驾驶参数显著影响燃油消耗和排放,根据驾驶条件和车辆类型而异.
- 混合动力汽车节省了大量的燃料 (39%与汽油相比,26%与双燃料相比),但CO和HC排放量更高.
- 与自然吸气发动机相比,轮增压发动机的燃油消耗 (6%) 和CO2 (19%) 降低,但CO和HC增加.
- 在实际驾驶周期中,车的燃油消耗和排放量通常低于汽油SUV,原因是重量更轻,阻力更低.
结论:
- 车辆设计,动力系统技术和驾驶行为是优化燃油效率和减少排放的关键因素.
- 混合动力汽车提供了显著的燃油效益,但需要进一步调查其特定的排放配置文件 (CO,HC).
- 轮增压发动机在燃油效率/减少CO2和增加CO/HC排放之间进行了权衡.
- 车辆类型 (例如,车与SUV) 影响现实世界的性能,更轻,更有空气动力学设计通常表现更好.
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