Compact Seven- and Ten-Speed Dual-Clutch Transmissions

Hellenbroich, Gereon; Ruschhaupt, Johannes; Duindam, Coen

doi:10.1365/s40112-013-0317-8

Cited by 2 publications

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“…An xDCT is up to 10 speeds with the mechanical complexity of a conventional seven-speed DCT. 7 The key technology of this concept is the application of four DOFs. Two or more synchronizers must be activated simultaneously in some gears, and some gear pairs are used more than one time.…”

Section: Introductionmentioning

confidence: 99%

Synthesis method for compact dual-clutch transmission with four DOFs gear mechanism

Peng

2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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The design of dual-clutch transmission with multi-degrees-of-freedom (DOFs) is a good solution to increase in number of gears and a wider range of gear ratio in the limited space and weight. This article proposes a novel synthesis method for scheme design of the dual-clutch transmission with four degrees-of-freedoms gear mechanism. First, the shift sequences considering the path of power flow and shift logics are analyzed based on the degrees-of-freedom model, abstracted from the degrees-of-freedom of the schemes. Second, the schemes of gear-pair and shaft, defined as the scheme that ignores the arrangement of synchronizers, are derived from the basic configurations, defined as the schemes of gear-pair and shaft that contains only one of each type of the variable connections, and the numbers of each type of the variable connections. Finally, multi-parameter, including synchronizers arrangement and gear ratios, is optimally designed for the results of synthesis. The seven-speed dual-clutch transmission schemes with four degrees-of-freedom and two shaft systems are taken as an example to explain this synthesis method. In addition, this article helps to obtain a deeper understanding of the systematic design of other fixed gear transmission schemes, such as automated mechanical transmission, automated mechanical transmissions with electric torque supporting, and even some novel multi-input transmissions.

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Section: Introductionmentioning

confidence: 99%