Influence of Inertial Forces and Mass Balancer on Internal Combustion Engine Dynamics 2015-36-0324
The combustion engines evolution leads the engine manufacturers look for developments focused on downsizing, more powerful, lighter, with great fuel consumption and less noisy.
With special attention to NVH, specifically to vibration issue, this work aims at studying the influence of mass balancer and inertia forces coming from engine components on internal combustion engine dynamics supported by vibration dampers.
For mass balancer study several experimental analyses were performed in a dynamometer. The conclusions are obtained by comparison between measured engine displacements with and without mass balancer.
In order to study the influence of inertia forces from engine internal components, a mathematical model was developed. In this model the inertia forces act on a rigid body, supported by four vibration dampers and six degrees of freedom.
Some modifications are made on engine internal components such as mass and geometry, observing their influence on internal combustion engine dynamics.
The mathematical model is validated by comparison against experimental analyses.