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Multi-stage transmission

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

Active Publication Date: 2017-09-05
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 operate efficiently within a narrow speed range
Therefore, transmissions capable of efficiently transmitting power at multiple speed ratios are frequently used

Method used

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  • Multi-stage transmission
  • Multi-stage transmission
  • Multi-stage transmission

Examples

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Embodiment Construction

[0023] Embodiments of the disclosure are described herein. However, it is to be understood 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 practice the present invention. Those skilled in the art will appreciate that 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. The combination of features described provides a representative embodiment for a typical application. However, various combinations and modifications of the f...

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Abstract

A multi-speed transmission is provided that includes a variator gearing that produces at least nine forward gear ratios and one by selectively engaging three shift elements in various combinations. Reverse gear ratio. One embodiment includes four simple planetary gear sets, four clutches and two brakes. Another embodiment includes two shaft transfer gear pairs, three simple planetary gear sets, four clutches and two brakes.

Description

technical field [0001] The present disclosure relates to the field of automatic transmissions for motor vehicles. More specifically, the present disclosure relates to the arrangement of gears, clutches and their interconnections in power transmission. Background technique [0002] Many vehicles are used over a wide range of vehicle speeds, including both forward and reverse movement. However, certain types of engines can only operate efficiently within a narrow speed range. Therefore, a transmission capable of efficiently transmitting power at a plurality of speed ratios is frequently used. When the vehicle is at low speeds, the transmission typically operates at a high gear ratio such that the transmission amplifies engine torque for improved acceleration. When the vehicle is at high 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/66
CPCF16H3/66F16H2003/442F16H2003/447F16H2200/0065F16H2200/2012F16H2200/2046F16H2200/2082
Inventor 格雷戈里·丹尼尔·格莱斯基唐纳德·爱德华·霍夫曼
Owner FORD GLOBAL TECH LLC