Abstract
The effects of gear intermeshing condition, such as load torque, mesh angle, and distance of gears, on the gear noise has been studied experimentally. Though the gear noise problems have been investigated by a lot of previous researchers, the gear noise is still one of serious problems in motorcycle business. It is widely known that gear noise is greatly affected by intermeshing condition, but the relation between them has not revealed clearly. The purpose of this study is to make clear the effect of intermeshing condition on gear noise. To find this, we measured the sound pressure due to a pair of gears changing several parameters. As a result, several higher frequency response of tooth mesh frequency were observed, and spectrum level of these frequencies might be changed by the lord torque, mesh angle or distance of gears. It may be possible to estimate the intermeshing condition by measuring the gear noise and comparing the noise level of higher frequency response.
