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992D型装载机采用可变容量式液力变矩器,具有节能、力大及工况适应性强的特点。在使用中出现了两种故障：一是轮胎磨损异常；二是爬坡及工作时驱动无力。该机变速系统扭矩控制部分油路如附图所示。变矩器6是可变容量式变矩器,由内泵轮、外泵轮和涡轮等组成。内外泵轮通过液压控制离合器7实现离合。变速泵2是定量齿轮泵。顺序阀13、压力控制阀12、离心阀9及电磁阀14控制离合器7的离合。压力控制阀控制着变矩离合器内的
The 992D loader adopts variable capacity hydraulic torque converter, which has the characteristics of energy saving, strength and adaptability to working conditions. In use there are two kinds of faults: First, tire wear abnormalities; Second, climbing and work-driven weakness. The transmission system torque control part of the oil as shown in the figure. The torque converter 6 is a variable-capacity torque converter composed of an inner impeller, an outer impeller and a turbine. Inside and outside the pump wheel clutch through the hydraulic control clutch 7. Variable speed pump 2 is a quantitative gear pump. The sequence valve 13, the pressure control valve 12, the centrifugal valve 9, and the solenoid valve 14 control the clutch 7 clutch. The pressure control valve controls the torque converter