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A dual-clutch transmission (DCT) (sometimes referred to as a twin-clutch transmission) is a type of multi-speed vehicle transmission system, that uses two separate clutches for odd and even gear sets. [1] The design is often similar to two separate manual transmissions with their respective clutches contained within one housing, and working as ...
Historically, a dual-clutch transmission shifts faster than a standard hydraulic automatic transmission with a torque converter or a single-clutch automated manual transmission. This is possible because the DCT can pre-select the next gear and transfer torque from one clutch to the next clutch with the pre-selected next gear, thus reducing ...
Automated manual transmissions can be semi-automatic or fully-automatic in operation. Several different systems to automate the clutch and/or shifting have been used over the years, but they will generally use one of the following methods of actuation for the clutch and/or shifting: hydraulic or electro-hydraulic actuation, [12] electro-mechanical, [13] pneumatic, [6] [14] [15] electromagnetic ...
It is marketed variously under the trade names TCT - Twin Clutch Transmission , Euro Twin Clutch Transmission , [2] TCSS - The Twin Clutch System [3] and Dual-Dry-Clutch Auto Transmission . Able to receive torque inputs of up to 350 N⋅m (260 lbf⋅ft), the transmission is the highest-torque transverse dual-dry-clutch application.(2012) [ 4 ...
The operation of a dual-clutch transmission is analogous to two traditional manual transmissions, each with its own clutch, operating in parallel and alternating shifts. The Ford unit is a six-speed with one clutch acting on reverse, first, third, and fifth gears, and the other used for second, fourth, sixth gears.
The 2012-2016 DPS6 Powershift transmission was used in the 2012–2016 Ford Focus and 2011–2016 Ford Fiesta sedans. This transmission is the subject of a massive number of lawsuits alleging Ford lied in order to sell cars Ford knew had defective transmissions. [8] 2008–present 6DCT450 Ford Powershift (MPS6) 6-speed wet clutch
Historically, automatic transmissions were less efficient, but lower fuel prices in the US made this less of a problem than in Europe. [7] In the United Kingdom, a majority of new cars have had automatic transmissions since 2020. Several manufacturers including Mercedes and Volvo no longer sell cars with manual transmissions.
A direct-shift gearbox (DSG, German: Direktschaltgetriebe [1]) [2] [3] is an electronically controlled, dual-clutch, [2] multiple-shaft, automatic gearbox, in either a transaxle or traditional transmission layout (depending on engine/drive configuration), with automated clutch operation, and with fully-automatic [2] or semi-manual gear selection.