THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Jovan Ž Dorić

,

Ivan J. Klinar

EFFICIENCY OF A NEW INTERNAL COMBUSTION ENGINE CONCEPT WITH VARIABLE PISTON MOTION

ABSTRACT
This paper presents simulation of working process in a new IC engine concept. The main feature of this new IC engine concept is the realization of variable movement of the piston. With this unconventional piston movement it is easy to provide variable compression ratio, variable displacement and combustion during constant volume. These advantages over standard piston mechanism are achieved through synthesis of the two pairs of non-circular gears. Presented mechanism is designed to obtain a specific motion law which provides better fuel consumption of IC engines. For this paper Ricardo/WAVE software was used, which provides a fully integrated treatment of time-dependent fluid dynamics and thermodynamics by means of onedimensional formulation. The results obtained herein include the efficiency characteristic of this new heat engine concept. The results show that combustion during constant volume, variable compression ratio and variable displacement have significant impact on improvement of fuel consumption.
KEYWORDS
simulation, variable compression, variable displacement, constant volume combustion
PAPER SUBMITTED: 2011-09-23
PAPER REVISED: 2012-01-05
PAPER ACCEPTED: 2012-01-07
DOI REFERENCE: https://doi.org/10.2298/TSCI110923020D
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2014, VOLUME 18, ISSUE Issue 1, PAGES [113 - 127]
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Efficiency of a new internal combustion engine concept with variable piston motion

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