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Kinematic and Dynamic Performances of the Hypocycloid Gear Mechanism for Internal Combustion Engine Applications
- Mostafa A. ElBahloul - Stevens Institute of Technology, Schaefer School of Engineering & Science, Department of Mechanical Engineering, USA ,
- ELsayed S. Aziz - Stevens Institute of Technology, Schaefer School of Engineering & Science, Department of Mechanical Engineering, USA ,
- Constantin Chassapis - Stevens Institute of Technology, Schaefer School of Engineering & Science, Department of Mechanical Engineering, USA
Journal Article
03-15-02-0010
ISSN: 1946-3936, e-ISSN: 1946-3944
Sector:
Citation:
ElBahloul, M., Aziz, E., and Chassapis, C., "Kinematic and Dynamic Performances of the Hypocycloid Gear Mechanism for Internal Combustion Engine Applications," SAE Int. J. Engines 15(2):223-246, 2022, https://doi.org/10.4271/03-15-02-0010.
Language:
English
Abstract:
Internal combustion (IC) engines incorporating the conventional slider-crank
mechanism are subjected to high frictional power losses mainly due to the
piston-rod assembly. Due to its simplicity, IC engines have utilized this
mechanism almost unchanged since its introduction. This study introduces the
hypocycloid gear mechanism (HGM) as an alternative to the conventional
slider-crank mechanism for IC engine systems. The HGM provides several
advantages that allow for enhancing both the thermal and mechanical efficiencies
of IC engines. In this study, the kinematic and dynamic performances of the HGM
engine are analyzed in detail. The geometric relations of the HGM are used to
derive the kinematic equations that describe the piston motion. These equations
are then used to derive the dynamics equations considering gas and inertia
forces acting on the HGM. This study also investigates the effect of attaching a
flywheel to the HGM engine and suggests a mass-balancing approach for the
engine. The results show that the HGM engine can achieve better engine
performance in terms of the output torque, and there is a chance to perfectly
balance the HGM engine.