Lubricant-induced Low Speed Pre-Ignition (LSPI) Mechanism

润滑油引起的低速预点火 (LSPI) 机制

• 批准号: 2067525
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2067525
• 关键词: Lubricant; induced; Low; Speed; Pre

Boosting, direct-injection, late combustion and low piston-ring tension all increase the propensity forLow Speed Pre Ignition (LSPI), which can lead to destructive megaknock. Droplets of lubricant or particles of combusted lubricant are considered the source of LSPI. This I-Case PhD collaborated project between BP and Imperial College will aim to characterise and understand the physical and chemical properties of droplets/deposits. Experiment will be conducted in a combustion bomb, equipped with a mono-dispersed droplet generator. Parametric study by varying the physical and chemical properties of the droplets will be conducted with the objective to produce a ranking of all the lubricant components with regards to their LSPI performance. Another aspect of the project will investigate the reaction mechanism of metal based deposits. The outputs from the collaborated PhD project will provide insight on lubricant formulation to meet future stringent requirement from industry and OEMs.

增压、直喷、延迟燃烧和低活塞环张力都会增加低速预燃(LSPI)的倾向，这可能会导致破坏性的大爆炸。润滑剂液滴或燃烧的润滑剂颗粒被认为是LSPI的来源。英国石油公司和帝国理工学院合作的I-Case博士项目将致力于表征和了解液滴/沉积物的物理和化学性质。实验将在装有单分散液滴发生器的燃烧炸弹中进行。将通过改变液滴的物理和化学性质进行参数研究，目的是根据其LSPI性能对所有润滑油组分进行排名。该项目的另一个方面将研究金属基沉积物的反应机理。合作博士项目的成果将为润滑油配方提供洞察力，以满足行业和OEM未来的严格要求。