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[19780] Artykuł: Determining selected diesel engine combustion descriptors based on the analysis of the coefficient of variation of in-chamber pressureCzasopismo: BULLETIN OF THE POLISH ACADEMY OF SCIENCES TECHNICAL SCIENCES Tom: 63, Zeszyt: 2, Strony: 457-464ISSN: 0239-7528 Wydawca: POLSKA AKAD NAUK, POLISH ACAD SCI, DIV IV TECHNICAL SCIENCES PAS, PL DEFILAD 1, WARSZAWA, 00-901, POLAND Opublikowano: Czerwiec 2015 Autorzy / Redaktorzy / Twórcy
Grupa MNiSW: Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A) Punkty MNiSW: 20 Klasyfikacja Web of Science: Article DOI Web of Science Keywords: diesel engine  coefficient of variation  measurement uncertainty  heat release rate  start of combustion  |
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.