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试图用液力变矩器涡轮进出口液流速度三角形来定性解释单级离心起动变矩器第二象限（反转制动工况）全充油试验特性和部分充油时反转制动力矩降低的理论依据。对进油口正常开度而排油口定开度变矩器部分充油反转制动力矩分析，认为由于存在反转制动力矩不可调，在一定录轮转速和一种排油口面积下，只一条制动曲线，限制了变矩器作反转动力制动的应用范围。提出了进油口可调而排油口又受与涡轮转速平方成正比的反应油压控制的系统，即可控反转制动系统。经台架试验证明切实可行。经现场试用，其制动性能相当优越，制动力矩可随意调节。使液力变矩器真正成为一机两用的传动部件。
Trying to qualitatively explain the full oil-filled test characteristic of the second quadrant (reverse braking condition) of the single-stage centrifugal torque converter and the reverse braking torque Reduce the theoretical basis. The normal opening of the oil inlet and the oil discharge opening a certain degree of torque converter torque converter reverse braking torque analysis that the existence of reverse braking torque can not be adjusted at a certain speed and a recording port area Under, only a braking curve, limiting the torque converter for reverse power braking applications. A controllable oil pressure control system is proposed, in which the oil inlet is adjustable and the oil outlet is directly proportional to the square of the turbine speed. The bench test proved viable. The field trial, the braking performance is quite superior, braking torque can be adjusted. So torque converter truly become a dual-purpose transmission components.