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Multi-speed transmission

A transmission and clutch technology, which is applied in vehicle gearboxes, multi-gear ratio transmissions, transmissions, etc., and can solve problems such as frequent use

Active Publication Date: 2015-04-15
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, certain types of engines can only run efficiently within a narrow RPM range
Therefore, transmissions capable of efficiently transmitting power in multiple gear ratios are frequently used

Method used

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

Examples

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Embodiment Construction

[0020] Embodiments of the disclosure are described herein. It should be understood, however, that the disclosed embodiments are merely examples, and that other embodiments may be embodied in 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 understood by those of ordinary skill in the art, various features shown and described with reference to any one figure may be combined with features shown in one or more other figures to produce Example. The combinations of features shown provide representative embodiments for typical applications. However, various combinations and modifications of the features consistent with the teachings of t...

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Abstract

The invention provides a multi-speed transmission. A family of transmission gearing arrangements produces up to ten forward and one reverse speed ratios by selective engagement of various combinations of three or four clutches are disclosed. Each disclosed transmission includes four planetary gear sets and six clutches. . One of the shift elements may be a dog clutch. Optional passive one way brakes simplify the control.

Description

technical field [0001] The present disclosure relates to the field of automatic transmissions for motor vehicles. More specifically, the present disclosure relates to arrangements of gears, clutches, and interconnections in a powertrain. Background technique [0002] Many vehicles are used over a wide range of vehicle speeds, including both forward and reverse motion. However, certain types of engines can only run efficiently within a narrow rpm range. Therefore, a transmission capable of efficiently transmitting power at a plurality of gear ratios is frequently used. When the vehicle is at low speeds, the transmission typically operates at a high gear ratio, allowing the transmission to multiply engine torque for acceleration. At high vehicle speeds, the transmission operates at low gear ratios to allow engine speeds associated with quiet, fuel-efficient cruising. Typically, a transmission has a housing mounted to the vehicle's structure, an input shaft driven by the en...

Claims

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Application Information

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IPC IPC(8): F16H3/62F16H57/023
CPCF16H3/66F16H2200/0069F16H2200/2012F16H2200/2046F16H2200/2084F16H2200/2043F16H2200/2094
Inventor 格雷戈里·丹尼尔·格莱斯基雷德·阿兰·鲍德温
Owner FORD GLOBAL TECH LLC
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