Abstract
To protect the global emvironment and for energy saving, it is needed to improve the fuel consumption of vehicle. It is a means of improvement of fuel consumption to reduce the friction of hypoid gear. Generally, it is known that hypoid gear meshing friction has opposite performance to NVH and strength. In this paper, the prediction method of hypoid gear friction is shown which is based on the formula proposed by Wells Coleman and using the experimental formula as the coefficient of friction of meshing. And the facter effect of hypoid gear dimension parameter to friction loss is considered using the prediction method. From this consideration, spiral angle and pinion offset have big effect to meshing friction. By optimizing spiral angle, pinion offset and face with which has big effort to NVH and strength, dimension example is cleared which has equal performance of both of NVH and strength, and better performance of meshing friction compared with current hypoid gear.
