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Pneumatically adjustable cvt transmission and method for adjusting cvt transmission

A derailleur, pneumatic technology applied in the direction of toothed elements, transmission control, belt/chain/gear, etc., to achieve the effect of improving efficiency, simple adjustment and reducing belt tension

Active Publication Date: 2020-11-17
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this assembly has the disadvantage that active control or regulating intervention of the transmission ratio of the CVT transmission is not possible

Method used

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  • Pneumatically adjustable cvt transmission and method for adjusting cvt transmission
  • Pneumatically adjustable cvt transmission and method for adjusting cvt transmission
  • Pneumatically adjustable cvt transmission and method for adjusting cvt transmission

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] refer to later Figures 1 to 4 The CVT transmission 1 according to the invention and the method according to the invention will be described in detail.

[0026] as by figure 1 It can be seen that the CVT transmission 1 comprises a cone pair 2 having a fixed cone 20 and an axially movable cone 21 . The surrounding winding means 12 connect the cone-disc pair 2 to the output element 13 . The output element 13 is likewise arranged as a cone-disc pair.

[0027] Arranged on the first conical disk pair 2 is a centrifugal force element 3 which is pressed radially outward due to the centrifugal force acting on it, whereby a change in the transmission ratio of the CVT transmission occurs automatically. However, the invention can also be implemented without centrifugal force elements.

[0028] Here, the cone-disc pair 2 is connected to an internal combustion engine 10 via a crankshaft 11 .

[0029] Furthermore, a pneumatic actuator 5 is provided according to the invention. T...

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PUM

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Abstract

The present invention relates to a method for controlling a pneumatic actuator (5) of a CVT transmission (1) for changing a conversion ratio of the CVT transmission, comprising the following steps: determining a current actual speed of an internal combustion engine (10); comparing the current actual speed to a target speed of the internal combustion engine, wherein the target speed is determined according to a vehicle speed, wherein, if the actual speed is lower than the target speed, the actuator (5) is connected to a negative-pressure source (9) and wherein, if the actual speed is higher than the target speed, the actuator (5) is connected to a pressure source (14).

Description

technical field [0001] The invention relates to a method for adjusting a CVT transmission by means of pneumatic means and a pneumatically adjustable CVT transmission, in particular a pneumatically adjustable CVT transmission for small vehicles such as two-wheelers, three-wheelers, quad bikes or snowmobiles, and Involves internal combustion engines and vehicles. Background technique [0002] CVT transmissions are known in various configurations from the prior art. On the basis of a continuously variable transmission, correspondingly suitable gear ratio relationships can be achieved in the vehicle compared to a transmission with fixed gears. A particular field of application of such a CVT transmission is small vehicles such as two-wheelers, three-wheelers (so-called tucktucks), snowmobiles, quad bikes or scooters and the like. In this type of CVT transmission, a centrifugal force adjuster is usually used for adjusting the position of the belt on the pair of cones. Depending...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/662F16H63/06B60W10/06B60W10/107
CPCF16H61/662F16H61/66231F16H61/66254F16H63/06F16H63/065F16H2059/366
Inventor O·杰伦特I·克勒斯特夫D·施瓦茨I·德鲁R·艾达姆R·狄克曼C·布赖廷格M·克利缅科
Owner ROBERT BOSCH GMBH