Locked oil-filling method of locked type hydraulic torque converter for loading machine

Abstract

The invention provides a locked oil-filling method of a locked type hydraulic torque converter for a loading machine. The locked oil-filling method comprises the following steps of filling a locked-control hydraulic pipeline of the locked type hydraulic torque converter with oil, and leading the oil pressure in a locked-control hydraulic cavity of the locked type hydraulic torque converter to reach 80%-87% of the allowable specific pressure of a clutch within a first sliding friction time T0, wherein T0 is more than or equal to 0.15 and less than or equal to 0.25S; continuously filling a locked-control hydraulic pipeline of the locked type hydraulic torque converter with oil, and leading the oil pressure in the locked-control hydraulic cavity of the locked type hydraulic torque converter to reach the allowable specific pressure of the clutch within a second sliding friction time T1, wherein T1 is more than or equal to 0.55 and less than or equal to 0.65S; continuously filling the locked-control hydraulic pipeline of the locked type hydraulic torque converter with oil, and leading the oil pressure in the locked-control hydraulic cavity of the locked type hydraulic torque converter to reach the main pressure value within a third sliding friction time T2, wherein T2 is more than or equal to 0.15 and less than or equal to 0.25S. The locked oil-filling method provided by the invention has the advantages that the stability and the smoothness of starting or shifting of the loading machine can be ensured, the transmission efficiency is not reduced simultaneously, and the oil consumption of the loading machine can be reduced.

Description

technical field [0001] The invention belongs to the field of construction machinery transmission control, and in particular relates to a locking oil filling method for a locking hydraulic torque converter used in a loader. Background technique [0002] At present, a large number of hydraulic torque converters are used in loaders, which have the advantages of smooth starting, smooth shifting and simple operation, but the transmission efficiency is low and the fuel consumption is high. In the context of the increasingly scarce energy, the energy saving and consumption reduction of construction machinery has received more and more attention. To solve this problem, a torque converter lock-up clutch is usually installed in vehicles equipped with a torque converter. When controlling the combination of the lock-up clutch, if you pursue stability too much, it is easy to increase the fuel consumption and reduce the transmission efficiency, and cause the wear of the lock-up clutch. W...

AI Technical Summary

Problems solved by technology

When controlling the combination of the lock-up clutch, if you pursue stability too much, it is easy to increase the fuel consumption and reduce the transmission efficiency, and cause the wear of the lock-up clutch. When you pursue transmission efficiency and reduce fuel consumption, the angular acceleration of the torque converter will increase, making The shock of the hydraulic torque converter is too high when starting or shifting gears, and the lock-up clutch is not smoothly combined