Abstract
For the purpose of improving the efficiency of automotive transmission, there is a greater need to modify even the gear dimensions and tooth surface for reducing gear mesh loss. In this paper the effects of gear dimensions and tooth surface modification on reducing gear mesh loss were experimentally investigated. It was confirmed that fine pitch gear is effective for reducing mesh loss and that the mesh efficiency is improved by increasing the amount of tooth profile crowning. In order to verify these results we developed a prediction program of gear mesh efficiency that can estimate the influence of gear dimensions and the tooth surface modification on the mesh efficiency.
