| 摘要 |
A torque converter includes a front cover, an impeller, a turbine and a stator. The impeller includes an impeller shell coupled to the front cover, a plurality of impeller blades disposed inside the impeller shell, and an impeller hub. The impeller hub is formed in an axially extending tubular shape, while being fixed at an engine-side end part thereof to the inner peripheral part of the impeller shell by means of friction welding. The impeller hub also has a burr produced by the friction welding. |
