Abstract
The gear noise has been reduced by reducing the meshing transmission error to improve the gear noise up to now. However, it seems that there is no research that considers even human aural characteristic yet in this field. Therefore, we propose a new design method of the low noise gear, which according to human aural characteristic. The proposed technique is a gear design to control the meshing frequency of the gear noise by changing number of tooth. First of all, driving experiment was done under the vehicle environment. In addition, the relationship between the gear noise level and vehicle environment was investigated. Finally, it was demonstrated that a proposed method was effective to design an advantageous number of gear teeth according to human aural characteristic.
