Hydraulic boosting mechanic for free type full-automatic stepless transmission

Abstract

The invention relates to a hydraulic assistant device of free full-automatic stepless speed variable device, which is characterized in that: it has a free disc hydraulic gear pump and a drive axle hydraulic gear pump, whose left and right oil chambers are connected to the oil tube and the hydraulic valve and connected via oil tube and one-way oil valve; two hydraulic cylinders and the oil pool are connected to the hydraulic valve via oil tube, while they are connected via safe pressure adjusting valve; the hydraulic cylinder relative of driven axle hydraulic gear pump and the oil pool have a one-way oil valve between them; the displacement of valve core of hydraulic valve and realize the switch between the functions of left and right oil chambers of said two hydraulic gear pumps to meet the demand of vehicle backing. And said invention can keep the property of free full-automatic stepless speed variable device and overcome the defects of less torque, to verify the transmission rate and torque in large area, which can be used in variable vehicles.

Description

1. Technical field [0001] The invention relates to a fully automatic hydraulic auxiliary mechanism for a motor vehicle, in particular to a free type fully automatic continuously variable transmission hydraulic auxiliary mechanism. 2. Background technology [0002] At present, during the operation of the free-style fully automatic continuously variable transmission, the resistance and follow-up force received by the free disc mechanism are entirely the power on the driving shaft, so that the binding force of the free disc mechanism is often insufficient, and the reaction force to the engine is small, and the engine is easy to drive. High-speed rotation, the output torque after the stepless speed change through the free-type fully automatic continuously variable transmission cannot reach the required maximum output torque. Large torque, and there is serious mechanical energy loss in the extreme sports stage, wasting fuel oil, it does not have the application on motor vehicles,...

AI Technical Summary

Problems solved by technology

[0002] At present, during the operation of the free-style fully automatic continuously variable transmission, the resistance and follow-up force received by the free disc mechanism are entirely the power on the drive shaft, so that the binding force of the free disc mechanism is often insufficient, and the reaction force to the engine is small, and the engine is easy to drive. High-speed rotation, the output torque after stepless speed change through the free-style fully automatic continuously variable transmission cannot reach the required maximum output torque. Large torque, but there is also a serious loss of mechanical energy in the extreme sports stage, wasting fuel, it does not have the application in motor vehicles, and it is not conducive to a large number of promotion and use

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