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CLG856型装载机配装的4WG-200型液力变速器,是柳州采埃孚机械有限公司引进德同ZF公司技术生产的产品。该型液力变速器采用EST-17T犁微电脑控制器,可实现半自动换挡,且换挡迅速、准确。该型液力变速器采用电液控制,出现故障后难以排查。我们在此介绍该型液力变速器换挡控制系统的结构、原理和故障检测方法。1.结构及原理(1)结构4WG-200型液力变速器由液力变矩器和动力换挡变速器组成。液力变矩器主要由泵轮、涡轮、导轮组成。它能够
CLG856 loader equipped with 4WG-200-type hydraulic transmission is the ZF Machinery Co., Ltd. Liuzhou Germany to introduce Germany with the ZF technology products. The hydraulic transmission using EST-17T plow microcomputer controller can achieve semi-automatic shift, and shift quickly and accurately. The hydraulic transmission using electro-hydraulic control, difficult to troubleshoot after a failure. Here we introduce the structure, principle and fault detection method of this shift control system of hydraulic transmission. 1. Structure and Principle (1) Structure The 4WG-200 hydraulic transmission consists of a torque converter and a power shift transmission. Torque converter is mainly composed of pump wheel, turbine and guide wheel. It can