Rattling and clattering noise in automotive transmissions simulation of drag torque and noise

The noise aspect of drivelines is becoming an increasingly important factor in the development of modem motor vehicles. Automotive transmissions contribute a considerable proportion of overall vehicle noise. The intrusive characteristic of rattling and clattering noises makes it a particularly important factor. A strategic approach to investigating these types of noise in the form of experimental investigations of automotive transmissions on a rattle and clatter test stand at the Institute of Machine Components (IMA) at the University of Stuttgart and theoretical studies of the parameters responsible are leading to findings that are helping to reduce this type of noise.