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Speed ratio control device for belt type continuously variable transmission of automobile and motorcycle

A technology of continuously variable transmission and control device, which is applied in the direction of transmission device, transmission device control, components with teeth, etc., can solve the problem of high machining accuracy requirements of hydraulic actuators, uncontrollable speed ratio adjustment accuracy, and hydraulic actuator efficiency. Low problems, to achieve the effect of continuous stepless change, convenient control and high speed ratio adjustment accuracy

Active Publication Date: 2013-02-27
JIANGSU UNIV OF TECH
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AI Technical Summary

Problems solved by technology

However, the efficiency of the hydraulic actuator is low. Research shows that the hydraulic system accounts for about 60% of the power loss of the metal belt continuously variable transmission, while the metal belt friction transmission only accounts for about 30%. At the same time, the hydraulic actuator requires high machining accuracy. This leads to higher cost; while using the torque cam mechanical adjustment method, the change of the speed ratio of the continuously variable transmission is generally accompanied by the change of the engine working condition, that is, the engine cannot be maintained in the optimal working area and only the speed of the continuously variable transmission needs to be adjusted. Ratio to meet the requirements of load changes, speed ratio adjustment accuracy can not be controlled

Method used

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  • Speed ratio control device for belt type continuously variable transmission of automobile and motorcycle

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Embodiment Construction

[0012] See figure 1 , The speed -ratio control device of the bandless transmission of this embodiment, including: DC motor, the controller of the output shaft used to control the output shaft of the DC motor, and the power input shaft of the power input shaft of the engine output shaft when used2. Active band wheels on the power input shaft 1, power output shaft connected to the vehicle transmission shaft 27 during use 13, the starting wheel of the power output shaft 13, the active band wheel and the connection of the connection, and the connection, and the connection wheel, andFrom the V -type transmission zone of the zone.

[0013] The active band wheels include: active band wheels fixed on the power input shaft 1 2. On the right side of the active wheel fixed plate 2 and the empty sleeve on the power input shaft 1 3, Active Band Drive Drive on the Active Shape Set 3 4. On the right side of the active band -driven dynamic disk 4 to control the active band wheel dynamic plate 4On...

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Abstract

The invention discloses a speed ratio control device for a belt type continuously variable transmission of an automobile and a motorcycle. The device comprises a direct current motor and a controller of the direct current motor, two groups of gear transmission mechanisms, two groups of spiral screw mechanisms, two groups of spring booster mechanisms and a plurality of plane bearings and needle bearings. The direct current motor serves as a speed ratio control power source of the transmission and converts motor rotation angles into axial displacement of a belt wheel movable disc of the belt type continuously variable transmission through the two groups of the gear transmission mechanisms and the spiral screw mechanisms connected with the gear transmission mechanisms respectively and under the cooperation of springs, contact radii of a V-shaped transmission belt with drive and driven belt wheel discs are changed, and accordingly, continuous speed ratio variations of the continuously variable transmission in different working conditions is achieved.

Description

[0001] This application is a sub -application application. The application number of the original application: 201010538238.1, application date: November 10, 2010, invention creation name: The speed -ratio control device of the bandless transmission. Technical field [0002] The present invention is a speed -ratio control device for the stepless transmissions. It is mainly used to use a automatic transmission car and motorcycle. It can also be applied to other occasions that need to transmit power in a bead -free transmission. Background technique [0003] The car transmission must adapt to different requirements for the degradation and speed of the driving wheels under the beginning of the start, acceleration, driving, and overcoming various road obstacles.In order to make full use of the power of the engine to improve the fuel economy and improve the discharge performance of the car, the ideal car transmission should have a variable -free transmission ratio and can perform speed...

Claims

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Application Information

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IPC IPC(8): F16H59/06F16H9/18F16H61/662F16H37/02
Inventor 张兰春贝绍轶赵景波
Owner JIANGSU UNIV OF TECH
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