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Dual clutch transmission with planetary gearset

A technology of a planetary gear set, transmission, applied in the direction of a clutch, element with teeth, mechanically driven clutch

Inactive Publication Date: 2010-07-14
MAGNA POWERTRIAN INC (US)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The transmission may also be longer and heavier than desired

Method used

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  • Dual clutch transmission with planetary gearset
  • Dual clutch transmission with planetary gearset
  • Dual clutch transmission with planetary gearset

Examples

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Embodiment Construction

[0027] The following description is merely exemplary in nature and is not intended to limit the disclosure, application or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

[0028] figure 1 is a schematic diagram representing a dual clutch transmission 10 having a planetary gear set 12 driven by a main shaft 14 . Output from planetary gear set 12 is provided to clutch / brake assembly 16 and dual clutch 18 . The first input shaft 20 and the second input shaft 22 are selectively drivable by the planetary gear set 12 via the clutch / brake assembly 16 or the dual clutch 18 . A plurality of transmission gearsets are selectively operable to transmit torque from one of the first input shaft 20 and the second input shaft 22 to the layshaft 24 . Torque is transmitted from the countershaft 24 to the final drive unit 26 via one of the transmission gears coupled with the final drive unit 26 . ...

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Abstract

A transmission includes a first input shaft, a second input shaft and a planetary gearset having an input, a first output and a second output. The first output is in communication with a brake and a first clutch. The second output is in communication with the first clutch, a second clutch and a third clutch. The first clutch selectively drivingly couples the first output and the second output. The brake selectively restricts rotation of the first output. The second clutch selectively drivingly couples the second output and the second input shaft. The third clutch selectively drivingly couplesthe second output and the first input shaft. A first speed gearset is driven by the first input shaft and a second speed gearset is driven by the second input shaft.

Description

technical field [0001] The present disclosure generally relates to transmissions for motor vehicles. More specifically, a dual clutch transmission having planetary gear sets is disclosed. Background technique [0002] Many dual clutch transmissions (DCTs) include two input shafts. Based on the arrangement of the input shaft, transmission gears and various clutch members, odd-numbered transmission gears such as first, third, fifth and seventh speed transmission gears are connected to the first input shaft. The second input shaft is connected with even numbered speed gears such as second, fourth, sixth, eighth speed gears and possibly reverse gear. [0003] At least one known dual clutch transmission includes a transmission gear set having two or more meshing gears for each forward gear ratio provided. Accordingly, eight transmission gearsets are used in conjunction with the countershaft and at least one reverse gearset to provide eight forward gear ratios and at least one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/66F16D21/08
CPCF16H37/042F16D21/08F16D25/0638F16H3/54F16H2200/0052F16H2200/0056F16H2200/006F16H3/006
Inventor 李建文理查德·D·穆伊泽拉尔
Owner MAGNA POWERTRIAN INC (US)