A coupled model for the multibody dynamics and lubricated joints of internal combustion engines

A coupled model of the multibody dynamics for the main mechanism of internal combustion engines and lubricated joints are developed in this work. The joints are treated as hydrodynamic journal bearings, whose mass-conserving Reynolds equations are solved using the finite element method. The Newton–E...

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Bibliographic Details
Published in:Journal of the Brazilian Society of Mechanical Sciences and Engineering 2023-05, Vol.45 (5), Article 252
Main Authors: Oliveira, Fabiano L. M., Rodrigues, Gabriel W., Santos, Ilmar F., Bittencourt, Marco L.
Format: Article
Language:English
Subjects:
Engineering
Finite element method
Hydrodynamics
Internal combustion engines
Joining
Journal bearings
Lubrication
Mathematical models
Mechanical Engineering
Multibody systems
Technical Paper
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Summary:A coupled model of the multibody dynamics for the main mechanism of internal combustion engines and lubricated joints are developed in this work. The joints are treated as hydrodynamic journal bearings, whose mass-conserving Reynolds equations are solved using the finite element method. The Newton–Euler system of equations of the main mechanism is solved in each time step using the hydrodynamics forces obtained from the lubrication model. Output results of the model including the hydrodynamics forces, maximum oil pressure, minimum fluid thickness, and the orbits are presented for three different crank rotations of an engine. Validation using a conventional lubrication model found in the literature is considered, showing appropriate agreement of results.
ISSN:1678-5878
1806-3691
DOI:10.1007/s40430-023-04075-3