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Multi-speed transmission

A technology of transmission and axis, applied in the field of automatic transmission

Active Publication Date: 2014-12-24
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some types of engines can only operate efficiently within a narrow speed range

Method used

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  • Multi-speed transmission
  • Multi-speed transmission
  • Multi-speed transmission

Examples

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Embodiment Construction

[0022] Embodiments of the present disclosure are described herein. It is to be understood, however, that the disclosed embodiments are merely examples and that other embodiments may take various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. As will be appreciated by those of ordinary skill in the art, various features illustrated and described with reference to any one figure may be combined with features illustrated in one or more other figures to form embodiments not explicitly illustrated or described. Combinations of features shown provide representative embodiments for typical applications. However, various combinations and modifications of th...

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Abstract

The invention relates to a multi-speed transmission. A family of transmission gearing arrangements provides between eight and ten forward speed ratios and a reverse speed ratio. Three planetary gear sets are located on the input axis and a fourth planetary gear set is located on an offset axis. Axis transfer gears convey power between the input axis and the offset axis. One axis transfer gear is supported by a front support while another is supported by a center support. The center support also supports a clutch module and supplies pressurized fluid to engage the clutches in the clutch module.

Description

technical field [0001] The present disclosure relates to the field of automatic transmissions for motor vehicles. More specifically, the present disclosure pertains to arrangements of gears, clutches, and interconnections therebetween in a powertrain. Background technique [0002] Many vehicles are used over a wide range of vehicle speeds, including both forward and reverse motion. However, some types of engines can only operate efficiently within a narrow speed range. Therefore, transmissions that can transmit power efficiently in multiple gear ratios are often used. When the vehicle is at low speeds, the transmission typically operates at a high gear ratio, which multiplies the engine torque for improved acceleration. At high vehicle speeds, the transmission is operated at low gear ratios to allow engine speeds associated with quiet, fuel-efficient cruising. Typically, a transmission has a housing that mounts to the vehicle structure, an input that is driven by the eng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/62
CPCF16H3/66F16H3/62F16H57/021F16H61/0265F16H2003/442F16H2200/006F16H2200/0069F16H2200/2012F16H2200/2043F16H2200/2046F16H2200/0082F16H2200/2038F16H2700/02F16H2702/02
Inventor 戴维·艾伦·贾森
Owner FORD GLOBAL TECH LLC
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