Ship Power Plants    

DOI: https://dx.doi.org/10.24866/2227-6858/2019-2-9

Sobolenko A., Glazuk D., Korneichuk Y.

ANATOLY SOBOLENKO, Doctor of Engineering Sciences, Professor, e-mail: sobolenko_a@mail.ru
DMITRY GLAZUK, Candidate of Engineering Sciences, Associate Professor, e-mail: Daymon3@bk.ru
YURY KORNEICHUK, Candidate of Engineering Sciences, Associate Professor, e-mail: korneych@mail.ru
Department of Ship Power Plants
Far Eastern State Technical Fisheries University
52B Lugovaya St., Vladivostok, Russia, 690087

Improving working cycle parameters of six-stroke diesel engine
by optimizing take-off angle of the intake valve 
to the bottom dead center at the intake stroke

Abstract: The purpose of this research was to study the effect of the Miller Mode on the performance of a six-stroke diesel engine. A theoretical analysis of thermodynamic processes in a six-stroke diesel engine was carried out using the Grinevetsky–Mazing method. It was possible to obtain a number of important parameters that were used to optimize the performance of the diesel engine on the six-stroke-cycle. The regression dependences of the indicator and effective factors of the working cycle of the six-stroke diesel engine and the angle of the inlet valves are obtained. The optimal values of the intake valve closing phases to the bottom dead center piston (BDC) have been obtained to achieve maximum values of the indicator efficiency, average indicator pressure; combustion pressure in the fifth stroke; the maximum temperature of combustion in the fifth cycle, as well as the minimum value of the specific effective and indicator fuel consumption.

Keywords: diesel engine, six-stroke cycle, theoretical cycle, Miller cycle.

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