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The paper describes cranktrain mechanisms of internal combustion engines in six different configurations. Depending on the size and functional purpose of the engines, different design shapes of their parts (crankshafts, conrods and pistons) are shown as CAD models in STL format. The concept of structured dynamic model of crankshaft and conrod for use in simulation of dynamics and vibrations using AVL EXCITE™ is explained. The methodology of automatic generation of such models using an internal CAD-FEM-FEA pre-processor for crankshafts is described and visualized. The option to transform it into a 1D equivalent torsional model is mentioned. A set of main geometric dimensions approximating the conrod shape is specified, based on which a simplified 3-node structured dynamic model of conrod is generated.

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Cranktrain Model Catalog as a Didactic Tool for Generating Structured Models of Engine Parts to be Used in Dynamic Simulation with AVL EXCITE™

  • 会议论文

  • 发表日期：

    2026年

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  • Tigran Parikyan,
  • Davit G. Yurmuzyan,
  • Arpine S. Babayan,
  • Feliks H. Parikyan

摘要

The paper describes cranktrain mechanisms of internal combustion engines in six different configurations. Depending on the size and functional purpose of the engines, different design shapes of their parts (crankshafts, conrods and pistons) are shown as CAD models in STL format. The concept of structured dynamic model of crankshaft and conrod for use in simulation of dynamics and vibrations using AVL EXCITE™ is explained. The methodology of automatic generation of such models using an internal CAD-FEM-FEA pre-processor for crankshafts is described and visualized. The option to transform it into a 1D equivalent torsional model is mentioned. A set of main geometric dimensions approximating the conrod shape is specified, based on which a simplified 3-node structured dynamic model of conrod is generated.