TOOL FOR THE SYNTHESIS OF MECHANISMS OF NEW ENGINES BASED ON DASY
Abstract
Článek se zabývá prezentací nástroje pro syntézu mechanismů motoru založený na DASY a jeho využití při návrhu parametrů experimentálního jednoválcového motoru. Nástroj obsahuje parametrický model motoru založený na DASY. Model umožní simulovat termodynamiku motoru a jeho mechanismy. Skládá ze submodelů, které řeší termodynamiku, kinematiku a dynamiku rozvodového mechanismu, jeho řemenový pohon a hydraulický okruh natáčení vačkových hřídelí. Metodik syntézy mechanismů bylo využito pro nalezení hodnot kalibračních parametrů. Následně byly parametry submodelů validovány experimentálními daty a jejich hodnoty jsou obsaženy v DASY. Ze submodelů byl sestaven model experimentálního jednoválce, který ověřuje jeho konstrukci, umožňuje optimalizovat jeho parametry a předpovídat jeho chování v různých simulovaných stavech.
The article presents a tool for the synthesis of engine mechanisms based on DASY and the use thereof for designing the parameters of an experimental single‐cylinder engine. The tool includes a parametric engine model based on DASY. The model will make it possible to simulate the engine thermodynamics and its mechanisms. It consists of sub‐models which deal with the thermodynamics, kinematics and dynamics of the valve timing mechanism, its belt drive, and hydraulic circuit for camshaft adjustment. The methodologies of synthesis of mechanisms were used to determine the values of the calibration parameters. The parameters of the sub‐models were subsequently validated by experimental data, and the values thereof are included in DASY. The sub‐models were used to assemble the model of an experimental single‐cylinder engine which validates the design thereof, makes it possible to optimize its parameters and predict its behavior in different simulated conditions.
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Copyright (c) 2017 David Richtr
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