发动机启/关管理,考虑HEV的热动力学
1Department of Mechanical System Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakamachi, Tokyo, 184-8588, Japan.
Heliyon
|February 5, 2025
概括
提高混合动力电动汽车 (HEV) 的能源效率需要优化内燃机 (ICE) 运行. 考虑到发动机热状态的新型歇斯底里策略通过简化实时开/关决策来提高效率.
科学领域:
- 汽车工程 汽车工程
- 能源系统 能源系统
- 控制理论 控制理论
背景情况:
- 内部燃烧发动机 (ICE) 在低温下由于燃料注入和摩擦增加,效率降低.
- 混合动力电动汽车 (HEV) 通过整合多个动力源,为改善能源经济提供了潜力.
- 在HEV中实时发动机启/关控制是复杂的,因为热动力学缓慢和不可预测的驾驶条件.
研究的目的:
- 为HEVs开发一个计算效率高,实时的发动机启/关控制策略.
- 调查发动机热力学对优化能源效率的影响.
- 将复杂的能源优化问题简化为实际的发动机开/关决策.
主要方法:
- 将能源优化问题转化为发动机开/关决策,专注于发动机最有效的操作点.
- 开发并模拟了三种基于规则的发动机开/关策略:一个没有热考虑的基准和两个具有热状态集成的歇斯底里策略.
- 使用模拟与随机生成的驾驶配置文件进行评估的策略.
主要成果:
- 提出的歇斯底里斯策略是可行的实时实施.
- 在开/关决策中考虑发动机的热影响,可以显著提高整体能源效率和经济性.
- 基于hysteresis的控制有效地管理发动机热动力学,以提高HEV性能.
结论:
- 结合热状态的歇斯底里斯策略提供了一种实用和有效的方法来优化HEV的能源效率.
- 基于热动力学的简化发动机开/关控制,与复杂的优化方法相比,减少了计算负担.
- 这项研究提供了一种可行的方法,可以在不同的温度条件下提高混合动力电动汽车的能源经济性.
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