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扩宽变矩器的高效率工作范围主要就是要设法降低在计算转速比i~*两旁的冲击损失。简单地将单涡轮变矩器的涡轮分割成两部份,利用单向离合器的锁止和自由转动,来提高i~*左侧效率的方法,由于失掉了原单涡轮变矩器在计算工况附近的高效率区段,这是不可取的。如果在设计时作这样的考虑:在主涡轮(即T_Ⅱ)之前,泵轮之后设置一辅助涡轮(即T_Ⅰ),它在高转速比区域(包含i~*在内)内作自由旋转,而在低转速比区域内以一定的
Widening the torque converter’s high efficiency range of work is mainly to try to reduce the loss in the calculation of speed ratio i ~ * both sides of the impact. Simple single-turbine torque converter turbine is divided into two parts, the use of one-way clutch lock and freewheeling, to improve i ~ * left efficiency method, due to the loss of the original single-turbine torque converter in the calculation of working conditions This is not desirable for the nearby high-efficiency zone. If this is the case during design, before the main turbine (ie T_II), an auxiliary turbine (ie T_I) is provided after the pump impeller, which rotates freely in the high speed ratio range (including i ~ *) In the low speed ratio area with a certain