为了满足我国工程机械行业发展的需要,从1973年开始我们着手制定我国工程机械用液力变矩器系列。该系列按液力变矩器有效直径共分320,345,375,405,440,475,六个尺寸系列,48种品种规格,其功率为40～400马力,发动机转速为1500～2400转/分。该系列中有效直径为375毫米的是基本系列,它按泵轮出口角β_(12)为90°,108°,122°,135°分为四组,发动机转速为2000转/分时,其功率为120～180马力。这样,按三个工作轮和 In order to meet the needs of the development of China’s construction machinery industry, we began to formulate a series of hydraulic torque converters for construction machinery in China since 1973. The series is divided into 320, 345, 375, 405, 440, 475 effective diameter hydraulic torque converter, six size series, 48 ​​kinds of specifications, its power is 40 to 400 horsepower, engine speed is 1500 ~ 2400 rev / min. The series of effective diameter is 375 mm is the basic series, which is divided into four groups according to the pump impeller outlet angle β_(12) is 90°, 108°, 122°, 135°, when the engine speed is 2000 rpm, its Power is 120 to 180 horsepower. In this way, press three working wheels and