点燃式发动机燃烧循环变动研究进展  

Research progress in combustion cycle-to-cycle variations of spark ignition engines

作　　者：段雄波 奉莉宁 刘敬平[2] 孙志强[1] DUAN Xiongbo;FENG Lining;LIU Jingping;SUN Zhiqiang(School of Energy Science and Engineering,Central South University,Changsha 410083,China;College of Mechanical and Vehicle Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410083 [2]湖南大学机械与运载工程学院,湖南长沙410082

出　　处：《中南大学学报（自然科学版）》2023年第12期4882-4892,共11页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(52206140);湖南省科技创新计划项目(2021RC4006);中南大学创新驱动计划项目(2020CX008)。

摘　　要：点燃式发动机燃烧循环变动对其动力性、经济性以及排放特性影响非常大,且影响燃烧循环变动的参数众多,且参数之间又相互影响、相互耦合,因此,阐述各类影响点燃式发动机燃烧循环变动参数间的内在联系与关联机制,探索影响燃烧循环变动相互耦合因素解耦分析方法具有重要的研究意义。本文针对点燃式发动机燃烧循环变动特征参数及其表征方法、燃烧循环变动规律及其影响因素分析和燃烧循环变动数值模拟3个方面对点燃式发动机燃烧循环变动的研究方法及研究现状进行综述,指出:国内外学者对点燃式发动机燃烧循环变动产生的原因以及影响因素开展了深入研究;需发展新的考虑真实物理场的循环变动和循环爆震数值模拟方法以及对相互耦合参数解耦分析方法,阐明循环变动和循环爆震与燃料理化性质、控制和运行参数之间的内在关联机理,探索宽工况范围下循环变动和循环爆震参数调控方法及纠偏机制,以便为点燃式发动机高效清洁燃烧系统设计提供依据。Combustion cycle-to-cycle variations in the spark ignition engine have great influences on its power,economy and emission characteristics.However,there are many parameters that affect the combustion cycle-tocycle variations,and the parameters mutually affect and couple with each other.Therefore,it is an important and significant research job to expound the internal relationships and correlation mechanism among various parameters affecting the combustion cycle-to-cycle variations of the spark ignition engine,and explore the decoupling analysis method of the coupling factors affecting the combustion cycle-to-cycle variations.In this paper,the research methods and current development of combustion cycle-to-cycle variations were reviewed from three aspects,i.e.characteristic parameters and characterization methods of combustion cycle-to-cycle variations,changing rules and influencing factors analysis of combustion cycle-to-cycle variations,and numerical simulation methods of combustion cycle-to-cycle variations.It is pointed out that,currently,scholars have already carried out in-depth research on the reasons and influencing effects of the combustion cycle-to-cycle variations in the SI engine.It is necessary to develop a new simulation method of the combustion cycle-to-cycle variations and cyclic knock and analysis of mutual coupling parameter decoupling method based on the real physical field,which are used to illustrate the intrinsic connections between the combustion cycle-to-cycle variations,cyclic knock,fuel physical and chemical properties,controlling and operation parameters,and explore the parameter control method and correction mechanism of the combustion cycle-to-cycle variations and cyclic knock under the wide range operating conditions,thereby proving a basis for the design of high efficiency and clean combustion spark ignition engine.

关 键 词：点燃式发动机 燃烧循环变动 特征参数 参数解耦 

分 类 号：TK40[动力工程及工程热物理—动力机械及工程]