Assessment of controlling effectiveness of a combustion engine's utility parameters in relation to ecological and utility criteria

International Automotive Conference 2018

Nowakowski, J.^1 ; Brzozowski, K.^1 ; Knefel, T.^1

University of Bielsko-Biala, ul. Willowa 2, Bielsko-Biala

43-309, Poland^1

关键词: Compression ignition engine;    Decision making process;    Knowledge and experience;    Low fuel consumption;    Multi-criteria assessment;    Nitrogen oxides emission;    Numerical calculation;    Temperature and pressures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/421/4/042061/pdf
DOI  :  10.1088/1757-899X/421/4/042061

来源: IOP

【 摘 要 】

Compression ignition engine is very often used as a power unit in any type of vehicles, as well as in stationary installations. This is mainly due to high efficiency of such engines and resulting low fuel consumption. There exists clear relation between the utility parameters of the engine and emission level of air pollutants. Obtainment of satisfactory relation between the utility parameters of the engine and the emissions level creates a difficult task, requiring great knowledge and experience. To support decision-making process, a method how to assess results of controlling of the utility parameters of compression ignition engine has been depicted in the presented study. It has been proposed how to perform multicriteria assessment in relation to the utility and ecological criteria. Within group of the ecological criteria, emission levels of individual harmful components of exhaust gases were taken as the partial criteria to the assessment. In turn, parameters such as value of mean indicating pressure, thermal efficiency, maximal temperature and pressure of the cycle were considered within group of the utility criteria. Within framework of the study it has been performed evaluation of a few sets of the utility parameters, obtained in course of numerical calculations of partial engine loads. The calculations have comprised resolving of minimization task of nitrogen oxides emissions with limitations imposed on the utility parameters and other harmful compounds of exhaust gases. The method of analytic hierarchy process was applied to accomplishment of the multicriteria assessment.