A high-power hydraulic torque converter assembly and its control method

Abstract

The invention particularly relates to a high-power hydraulic torque converter assembly and a control method thereof. The assembly comprises a multi-sheet type locking clutch, a cover wheel, a turbine, a guide wheel, a pump wheel and an output shaft; the turbine, the guide wheel and the pump wheel form a torque converter working circulation cavity; a hydraulic reducer, a gear shifting clutch and a control system are further included; the hydraulic reducer is connected with the output shaft through a spline, the back end of the output shaft is connected with an external gearbox through the gear shifting clutch; and the control system is connected with the torque converter working circulation cavity, the hydraulic reducer and the multi-sheet type locking clutch and is used for controlling unlocking and locking of the multi-sheet type locking clutch, oil inlet and outlet of the torque converter working circulation cavity and working of the hydraulic reducer under the decelerating condition. By means of the hydraulic torque converter assembly, the clutch is protected, the output torque can be increased, and auxiliary braking can be provided for vehicles; and meanwhile, the price of the hydraulic torque converter assembly and the mechanical gearbox is far lower than that of an automatic gearbox, and the manufacturing cost is greatly reduced.

Description

technical field [0001] The invention belongs to the field of machinery, and in particular relates to a high-power hydraulic torque converter assembly and a control method thereof. Background technique [0002] At present, the transmission system on the high-power tractor is divided into two structures, one is the transmission system directly connected with the engine and the mechanical transmission; the other is the transmission system using the engine and the full hydraulic automatic transmission. [0003] The first structure, due to the rigid connection between the engine and the mechanical gearbox, the vehicle is generally heavy-loaded uphill, and the road conditions are more complicated, which requires frequent gear shifting, which causes the shifting clutch and gearbox to be damaged due to the impact of frequent shifting serious. [0004] In the second structure, the automatic transmission is equipped with a hydraulic torque converter, which is a flexible connection an...

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Problems solved by technology

[0003] The first structure, due to the rigid connection between the engine and the mechanical gearbox, the vehicle is generally heavy-loaded uphill, and the road conditions are more complicated, which requires frequent gear shifting, which causes the shifting clutch and gearbox to be damaged due to the impact of frequent shifting serious

[0004] The second structure, the automatic transmission is equipped with a hydraulic torque converter, which is a flexible connection and protects the clutch. However, the current automatic transmission is more expensive, resulting in a higher price for the vehicle and weakening its competitiveness in the market

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