The effect of cyclic dispersion of combustion pressure on working parameters of a spark ignition engine
by J. Janula
International Journal of Vehicle Design (IJVD), Vol. 4, No. 6, 1983

Abstract: The paper deals with the phenomenon of cyclic dispersion of firing pressure in an Otto engine and some factors affecting this process. On the basis of the results of investigations carried out with the use of an experimental engine, criteria for evaluation of the process have been determined and expressed as a function of variable working conditions of the engine. From the example of auxiliary systems employed in the engine experiment some possibilities of practical reduction of cyclic dispersion of firing pressures have been presented. Some attempts have been made to find a correlation between the cyclic dispersion of firing pressure and economy of the engine as well as the content of toxic components in the exhaust gases.

Online publication date: Sun, 25-May-2014

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