Prospects of Controlled Auto-Ignition Based Thermal Propulsion Units for Modern Gasoline Vehicles
Prospects of Controlled Auto-Ignition Based Thermal Propulsion Units for Modern Gasoline Vehicles
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DOI：
10.3390/en16093887
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发表时间：
2023-05
期刊：
影响因子：
3.2
通讯作者：
A. Bajwa;F. Leach;M. Davy
中科院分区：
文献类型：
--
作者：
A. Bajwa;F. Leach;M. Davy
采用空间分布自燃燃烧模式的汽油机，被称为受控自燃（CAI），是显著提高发动机效率和降低排放的有前景的技术。本文综述了各种汽油CAI技术的发展，并讨论了它们的优点和缺点。由高效汽油CAI发动机提供动力的混合动力推进系统可以为移动行业脱碳提供低碳途径。因此，本文着重于CAI实施的挑战和机遇，特别是电气化动力总成。不同的控制执行器，可以延长CAI的操作范围进行了讨论，并确定了混合动力系统的热电元件之间的协同操作的机会。这种协同作用可以消除CAI系统采用的障碍，因此，可以支持CAI采用并最大限度地提高其实施的效率。支持CAI燃烧不同的动力系统电气化水平，混合动力架构，发动机尺寸和能量管理系统的前景进行了讨论。通过支持CAI的能源管理策略，电气化动力系统提供的负载均衡有可能大大放宽基于CAI的热推进装置的工作点要求，并消除对昂贵执行器的需求。高度灵活的火花辅助部分预混压缩点火混合动力模式（SACI-PPCI）是传统动力系统的一种有前途的CAI策略，适度灵活的火花辅助压缩点火（SACI）配置可以是电气化动力系统的一种具有成本效益的热推进模式。
Gasoline engines employing the spatially distributed auto-ignition combustion mode, known as controlled auto-ignition (CAI), are a prospective technology for significantly improving engine efficiency and reducing emissions. This review paper provides an overview of developments in various gasoline CAI technologies and discusses their attendant strengths and weaknesses. Hybrid propulsion systems powered by high-efficiency gasoline CAI engines can provide a low-carbon pathway for mobility sector decarbonisation. Therefore, this paper focuses on the challenges and opportunities of CAI implementation, especially for electrified powertrains. Different control actuators that can extend the CAI operating range are discussed, and opportunities for synergistic operation between thermal and electric components of hybridised powertrains are identified. Such synergies can remove impediments in the way of CAI system adoption and can, thus, support CAI adoption and maximise efficiency gains from its implementation. The prospects of supporting CAI combustion for different powertrain electrification levels, hybrid architectures, engine size, and energy management systems are discussed. Load levelling offered by electrified powertrains through CAI-favouring energy management strategies has the potential to substantially relax the operating point requirements for CAI-based thermal propulsion units and to remove the need for expensive actuators. The highly flexible spark-assisted partially premixed compression ignition hybrid mode (SACI-PPCI) emerges as a promising CAI strategy for conventional powertrains, and the moderately flexible spark-assisted compression ignition (SACI) configuration can be a cost-effective thermal propulsion mode for electrified powertrains.