双涡轮液力变矩器由一、二级涡轮实现功率分流,然后通过摩擦滚子式超越离合器(以下简称超越离合器)将功率汇合至输出轴上,其工作原理是借内外圈将滚子楔住以传递扭矩。为此,将作为主动件的内圈与滚子的接触面做成凸轮表面,使之形成楔入角,实现单向传动 Twin turbine torque converter by the first and second turbine to achieve power shunt, and then through the friction roller overrunning clutch (hereinafter referred to as overrunning clutch) to converge the power output shaft, the working principle is to take the inner and outer ring roller wedge Live to transfer torque. To this end, the contact surface of the inner ring and the roller as an active part is made into a cam surface so as to form a wedging angle so as to realize one-way transmission