Determining selected diesel engine combustion descriptors based on the analysis of the coefficient of variation of in-chamber pressure

Bulletin of the Polish Academy of Sciences. Technical Sciences

A. B?kowskiCorresponding authorDepartment of Mechatronics and Machine Design, Kielce University of Technology, 7 Tysi?clecia Pa?stwa Polskiego Ave., 25-314 Kielce, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹  L. RadziszewskiDepartment of Mechatronics and Machine Design, Kielce University of Technology, 7 Tysi?clecia Pa?stwa Polskiego Ave., 25-314 Kielce, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Department of Mechatronics and Machine Design, Kielce University of Technology, 7 Tysi?clecia Pa?stwa Polskiego Ave., 25-314 Kielce, Poland

关键词: Keywords: diesel engine;    coefficient of variation;    measurement uncertainty;    heat release rate;    start of combustion;   

DOI  :  10.1515/bpasts-2015-0052

学科分类：工程和技术（综合）

来源: Polska Akademia Nauk * Centrum Upowszechniania Nauki / Polish Academy of Sciences, Center for the Advancement of Science

【 摘 要 】

This paper presents a method that uses the coefficient of variation (COV) of pressure in a diesel engine combustion chamber to determine the crank angle degree (CAD) for which the heat release rate (HRR) reaches the maximum value. The COV was proposed for determining the point corresponding to the angle of start of combustion (SoC). Regression models were fit with these descriptors for the engine powered by diesel, biodiesel or a combination of both, operating under full- or part- load conditions. The uncertainty parameter in these models was determined. Good agreement between the experimental results and the literature data shows the validity of the analysis

【 授权许可】

Unknown