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CVT

A technology of continuously variable transmission and disc, applied in the direction of friction transmission, toothed elements, belt/chain/gear, etc., can solve the problems of efficient transmission of engine kinetic energy, large volume of continuously variable transmission, etc., and achieve operational efficiency Beneficial, high load torque, effect of large load torque

Active Publication Date: 2018-01-30
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although existing CVT designs can improve overall powertrain efficiency, they are typically not inherently as efficient at transferring engine power as manual gearboxes
Further, typical existing CVTs are very bulky
Also, in existing designs, a trade-off must be made between performance and durability, and the contact pressure experienced by the contact area

Method used

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Examples

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Embodiment Construction

[0027] attached figure 1 and 2 A continuously variable transmission (CVT) according to an embodiment of the invention is shown. The continuously variable transmission includes an input shaft 4 . An input disc 6 is arranged on the input shaft 4 . In particular, as figure 2 As shown, both the front end surface and the rear end surface of the input disk 6 are frusto-conical, so they are inclined along the radial direction. As a result, the thickness of the input disc 6 decreases from its center to its radially outer edge.

[0028] The continuously variable transmission further includes an output shaft 8 . A pair of output disks 10a and 10b are arranged on the output shaft 8 . The output discs 10 a and 10 b are arranged at intervals along the length direction of the output shaft 8 . In particular, as figure 2 As shown, the opposing surfaces of the output disks 10a and 10b (ie, the surfaces facing each other inwardly) are frusto-conical in shape and are therefore both inc...

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PUM

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Abstract

A continuously variable transmission, comprising: a first shaft, carrying a first disc to rotate together; a second shaft, carrying a pair of second discs to rotate together, and the second discs are arranged at intervals along the second shaft , the first axis and the second axis are such that the first disc is located between and overlaps with the second disc, the opposite surfaces of the first disc and the second disc Inclined; a pair of driving rings, both located between the first disc and the second disc on opposite sides of the first disc, the end surface of the driving ring is in contact with the first disc contacting an opposing surface of the second disc to transmit power between the first shaft and the second shaft; and a control mechanism that drives the drive ring relative to the first disc and the second disc move, thereby changing the mutual radial position, thereby changing the speed of the continuously variable transmission.

Description

technical field [0001] The invention relates to a continuously variable transmission. Background technique [0002] Unlike conventional gearboxes with multiple discontinuous gear ratios, a continuously variable transmission (CVT) can continuously change gear ratios between a maximum value and a minimum value without discreteness. [0003] The continuously variable transmission maintains an ideal relationship between the engine and the wheels, improving fuel efficiency and acceleration. [0004] Many types of continuously variable transmissions are known, such as variable diameter pulley (VDP), toroidal CVT and cone CVT. [0005] While existing CVT designs can improve overall powertrain efficiency, they are typically not inherently as efficient at transferring engine power as manual gearboxes. Further, typical existing continuously variable transmissions are very bulky. Also, in existing designs, a trade-off must be made between performance and durability, and the contact ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H15/42F16H57/02
Inventor 布赖恩帕森
Owner SAIC MOTOR
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