Collaborative Research: NSF/DOE Partnership on Advanced Combustion Engines: Advancing Low Temperature Combustion and Lean Burning Engines for Light- and Heavy-Duty Vehicles with Mi

合作研究：NSF/DOE 先进内燃机合作伙伴关系：推进轻型和重型车辆的低温燃烧和稀薄燃烧发动机

• 批准号: 1258653
• 负责人: Robert Dibble
• 金额: $ 107万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-15 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1258653&HistoricalAwards=false
• 关键词: Collaborative; Research; NSF; DOE; Partnership

Abstract#1258653 / Dibble, Robert W.#1258626 / Cheng, Wai K.The goal of this research project is to help achieve the 54 mile-per-gallon vehicle mileage target (year 2025) by providing experimental data, simulation tools and understanding of fundamental phenomena to develop the next generation of high efficiency engines for vehicles. Our objective is the extension of clean and efficient low temperature combustion (LTC) technology to operate over the full load and speed range required of an engine. Two main two technology paths are explored: 1) partial fuel stratification (PFS) in LTC compression ignition engines, and 2) microwave assisted spark plugs (µWASP) combined with PFS in spark-ignited engines. This program has significant collaboration with the Combustion Research Facility at Sandia National Laboratories, the Lawrence Livermore National Laboratory, the Lawrence Berkeley National Laboratory, Ricardo Inc. ( for automotive testing ), and the Clean Combustion Research Center of KAUST.On a fundamental level, this program will provide detailed understanding of the chemical kinetics that cause pressure-sensitive intermediate temperature heat release and equivalence ratio sensitivity in gasoline, phenomena that enable high load boosted LTC with PFS. For the ìWASP technology, this program will provide understanding of the interactions between the spark discharge, the microwave field and the stratified mixture in the flame kernel formation process. Additionally, the fundamental physics behind flame propagation through a stratified charge will be studied to obtain a comprehensive description of the PFS ignition process. These scientific insights will be applied, through fundamentally based phenomenological models, to engines for improving engine efficiency and lowering emissions.

摘要#1258653/ Dibble，Robert W.# 1258626 / Cheng，阿威K.该研究项目的目标是通过提供实验数据、模拟工具和对基本现象的理解来帮助实现54英里/加仑的车辆里程目标（2025年），以开发下一代高效车辆发动机。 我们的目标是将清洁高效的低温燃烧（LTC）技术扩展到发动机所需的全负荷和转速范围。 探索了两种主要的技术途径：1）LTC压缩点火发动机中的部分燃料分层（PFS），以及2）火花点火发动机中的微波辅助火花塞（µWASP）与PFS相结合。 该计划与桑迪亚国家实验室的燃烧研究设施，劳伦斯利弗莫尔国家实验室，劳伦斯伯克利国家实验室，里卡多公司有着重要的合作。在基础层面上，该计划将详细了解导致汽油中压力敏感中间温度放热和当量比敏感性的化学动力学，这些现象使高负荷提升的LTC与PFS。对于微波WASP技术，该程序将提供对火花放电、微波场和分层混合物在火焰核形成过程中的相互作用的理解。 此外，火焰传播通过分层收费背后的基本物理将进行研究，以获得PFS点火过程的全面描述。 这些科学见解将通过基于根本的现象学模型应用于发动机，以提高发动机效率并降低排放。