Computer analysis, Modeling and design, Internal combustion engine

Analyses conducted using computer methods of the piston movement of an internal combustion engine allow for predicting the loads and various physical and chemical processes occurring during its operation already at the design stage. This article presents the results of a kinematic analysis of a single-cylinder compression-ignition engine by Ruggerini, using the CATIA V computer program. The obtained results were compared with analytical methods. In order to carry out the described analyses, the first part presents the construction of a three-dimensional computer model of the engine in question using another environment, which is the Solid Edge program.With the current state of engine design development, CAD design and CAM computational processes play a dominant role [6]. Analyses conducted using computer methods of the piston movement of an internal combustion engine allow for predicting the various physical and chemical processes and loads occurring during its operation already at the design stage. Dynamic problems of the crank mechanism can be studied using various sets of simplifying assumptions regarding mass distribution, kinematic constraints, and other more or less negligible physical features of the system [2].
In order to calculate the mechanical loads of the engine, the equation of motion, the velocity equation, and the acceleration equation of the crank mechanism parts are primarily determined as a function of the crank angle expressed in degrees of crankshaft rotation (°CA). Knowledge of the equation of motion allows for determining the position of each element of the mechanism at any given moment. This position determines, for example, the possibility of a collision of engine elements, e.g. (…)

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