Dynamic transmission error measurements of a drive train

Due to generally reducing the noise level of machines and automotive applications gear noise optimization becomes more important. To optimize the excitation of the gearing in the development process, tooth contact analysis software is used. The transmission error is most common to characterize the noise excitation of gear sets. Usually in automotive applications gear noise is influenced by the entire drive train system with all its components. Therefore, it is necessary to asses if the transmission error of the gear set correlates to the noise of the drive train. Aim of a project funded by the German Research Foundation (DFG) was to investigate the possibility to measure the transmission error for every step of assembly. The transmission error was measured for a gear set, the transmission and the drive train. The research object was the drive train of a light truck. This report presents the results of the completed project.