One Mode Continuously Variable Transmission With Low Loss Configuration

A technology of continuously variable transmissions and transmissions, which is applied to vehicle gearboxes, components with teeth, transmission devices, etc., and can solve problems such as complex layout and packaging

Inactive Publication Date: 2016-03-16
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, including low-loss devices in a CVT complicates the placement and packaging of these devices

Method used

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  • One Mode Continuously Variable Transmission With Low Loss Configuration
  • One Mode Continuously Variable Transmission With Low Loss Configuration

Examples

Experimental program
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Embodiment Construction

[0072] The following description is merely exemplary in nature and is not intended to limit the disclosure, application, or uses.

[0073] refer to figure 1 and 2 , a powertrain for a motor vehicle is generally indicated by reference numeral 10 . The powertrain 10 generally includes an engine 12 interconnected with a transmission 14 . Engine 12 may be a conventional gasoline, diesel, or flex-fuel internal combustion engine, a hybrid engine, or an electric motor, or any other type of motive force without departing from the scope of the present disclosure. The engine 12 includes an engine output shaft 15 that supplies drive torque to a transmission 14 through a torque converter 16 .

[0074] The torque converter 16 includes a toroid 17 contained within a torque converter housing 18 . Torque converter housing 18 is coupled to transmission housing 19 . The toroidal body 17 includes a pump 17A, a stator 20 connected to the transmission housing 19 by a one-way clutch 21 to prov...

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PUM

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Abstract

The invention provides a one mode continuously variable transmission with low loss configuration. The one mode, front wheel drive continuously variable transmission includes a transmission input member interconnected to an engine of the motor vehicle, a transmission output member, a continuously variable unit having a first pulley pair, a second pulley pair, and a chain wrapped around the first pulley pair and the second pulley pair. A planetary gear set includes a first member, a second member, and a third member. The first member is connected to the first pulley pair and the third member is connected to the transmission input member. A clutch is selectively engageable to connect the first member of the planetary gear set with the transmission input member. A band brake selectively engageable to connect the second member with a stationary member. The transmission output member is interconnected to a differential supported by sets of ball bearings.

Description

technical field [0001] The present disclosure relates to automatic transmissions, and more particularly, to a one-mode continuously variable transmission for front wheel drive motor vehicles having a low loss configuration for improved efficiency. 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") typically includes a chain and pulley system that operatively couples a rotating power source, such as an engine or an electric motor, to a dual gear final drive unit. The chain and pulley system generally includes first and second conical wheelsets with a torque transmitting chain extending between the conical wheelsets. Each conical wheel pair includes an axially fixed pulley member and an axially movable pulley member. Each movable pulley member is axially adjustable relative to the fixed pulley member ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H37/02
CPCF16H37/022F16H2200/00F16H2200/203F16H2200/0008F16H2200/2035F16H37/0813F16H2702/02
Inventor E.W.梅勒特J.M.哈特C.E.凯里
Owner GM GLOBAL TECH OPERATIONS LLC
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