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Variator assembly

A technology for transmissions and components, applied to transmission parts, components with teeth, transmissions, etc., which can solve the problems of increasing the complexity, cost, and axial length of transmissions

Inactive Publication Date: 2013-07-31
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use of separate components increases the complexity, cost, and axial length of the assembled transmission

Method used

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Examples

Experimental program
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Embodiment Construction

[0083] The following description is merely exemplary in nature and is in no way intended to limit the disclosure, application, or use.

[0084] Referring to FIG. 1 , a powertrain for a motor vehicle is generally indicated by the reference numeral 10 . The powertrain 10 generally includes an engine 12 interconnected with a transmission 14 . Engine 12 may be a conventional internal combustion engine or an electric motor, or any other type of prime mover without departing from the scope of the present disclosure. The engine 12 supplies drive torque to the transmission 14 through a torque converter 15 . Torque may alternatively or additionally be transmitted through a flex plate (not shown), a launch clutch, hydraulics, or other connection means without departing from the scope of the present invention.

[0085] The transmission 14 is a toroidal type continuously variable transmission (CVT) or a toroidal type continuously variable transmission (IVT). The transmission 14 include...

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PUM

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Abstract

A variator assembly for a transmission includes an input shaft, an input disc, an output disc, a roller, a trunnion, a piston, and a connection member. The input shaft defines an axis of rotation and the input disc is rotationally coupled to the input shaft and coaxial with the axis of rotation. The roller is disposed between the input disc and the output disc to provide a speed ratio between the input disc and the output disc. The trunnion is connected to the roller and includes a connecting feature. The piston defines a central bore. The connection member has a head portion, a shaft portion, and a connecting portion, where the connecting portion is connected to the connecting feature of the trunnion, the head portion abuts the piston, and the shaft portion is disposed in the central bore of the piston.

Description

technical field [0001] The present disclosure relates to transmission transmission assemblies. More specifically, the present disclosure relates to toroidal type variator assemblies. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may or may not constitute prior art. [0003] A continuously variable transmission ("CVT") generally includes gearing that operatively couples the transmission between a source of rotating power, such as an engine or electric motor, and a final drive unit. The variator includes rotating input and output discs capable of steplessly or continuously varying the ratio of input speed to output speed ("variator ratio"). The overall speed ratio provided by the CVT is a function of the transmission ratio and associated gearing. The output disc includes integrally formed gear teeth that mesh with and drive a corresponding gear. The gear is in turn functionally coupl...

Claims

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Application Information

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IPC IPC(8): F16H47/06F16H57/025F16H57/02F16H57/04
CPCF16H63/065F16H57/025F16H57/04F16H15/38F16H47/06F16H61/0009F16H57/02
Inventor P.C.伦德贝里S.白E.T.格罗乔夫斯基
Owner GM GLOBAL TECH OPERATIONS LLC