Abstract
ABSTRACT - A vehicle is, due to its basic construction, a system that vibrates. Rotational vibration in the system because of the irregularity of the engine torque, is inevitable. This leads not only to intrusive noise and reduced driving comfort, but also decreases the life of the components. To resolve this, LuK developed in the mid 80's a new concept of torsional damping. A new standard was set with the dual mass flywheel (DMF).
The extremely rapid development of vehicle technology in recent decades has produced engines that are more and more powerful and capable of running at extremely low engine speeds, thus the resultant torsional oscillations have increased. The noise and vibrations generated, such as gearbox rattle, bodywork resonance and movement vibrations have an adverse effect on the life cycle of the components and also on the driving comfort.
The purpose of a torsional damper, such as the dual mass flywheel (DMF), is to prevent as much as possible the rotational vibrations generated by the cyclical burn processes of the engine from reaching the rest of the drive train. A torsional damper is a flexible connection through which the resonance amplitudes can be smoothed and vibration damping can be achieved.
The paper illustrates the development and improvements of the dual mass flywheel, explaining the concept and future trends.
Keywords: transmission, damper, dual mass flywheel