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EXPERIMENTAL DETERMINATION OF DOUBLE VIBE FUNCTION PARAMETERS IN DIESEL ENGINES WITH BIODIESEL

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Author(s): Radivoje B Pešić | Aleksandar Lj Davinić | Dragan S Taranović | Danijela M Miloradović | Snežana D Petković

Journal: Thermal Science
ISSN 0354-9836

Volume: 14;
Issue: 5;
Start page: 197;
Date: 2010;
Original page

Keywords: biodiesel | diesel engine | double Vibe | heat release curve

ABSTRACT
A zero-dimensional, one zone model of engine cycle for steady-state regimes of engines and a simplified procedure for indicator diagrams analysis have been developed at the Laboratory for internal combustion engines, fuels and lubricants of the Faculty of Mechanical Engineering in Kragujevac. In addition to experimental research, thermodynamic modeling of working process of diesel engine with direct injection has been presented in this paper. The simplified procedure for indicator diagrams analysis has been applied, also. The basic problem, a selection of shape parameters of double Vibe function used for modeling the engine operation process, has been solved. The influence of biodiesel fuel and engine working regimes on the start of combustion, combustion duration and shape parameter of double Vibe was determined by a least square fit of experimental heat release curve.
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