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There are also mechanical designs for torque converters, many of which are similar to mechanical continuously variable transmissions or capable of acting as such as well. . They include the pendulum-based Constantinesco torque converter, the Lambert friction gearing disk drive transmission and the Variomatic with expanding pulleys and a belt dri
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.
[3] [7] By timing the operation of one clutch to engage at the precise moment that the other is disengaging, a DCT can shift gears without interrupting the torque supply to the wheels. [6] [7] A DCT uses clutch packs (as per a manual transmission), rather than the torque converter used by traditional (hydraulic) automatic transmissions. [1]
The MCT transmission is essentially the 9G-Tronic with a start-off wet clutch (NAK for German Nass-Anfahrkupplung) replacing the torque converter. This saves weight and optimises the response to the accelerator pedal input. It is a computer-controlled double-clutching. [11] The MCT acronym refers to this multiple-plate clutch.
The MCT (Multi-Clutch Technology) acronym refers to a planetary (automatic) transmission's multiple clutches and bands for each gear. [7] The MCT is fitted with 4 drive modes: "C" (Comfort), "S" (Sport), "S+" (Sport plus) and "M" (Manual) and boasts 0.1 second shifts in "M" and "S+" modes. MCT-equipped cars are also fitted with the new AMG ...
TC-SST uses dual-clutches to change gears.The TC-SST completes the clutch and gear shifts more quickly than a driver could in a conventional manual transmission, and is also quicker than either an automatic transmission with a torque converter, or a single-clutch automated manual transmission. [3]
[citation needed] This transmission locks up the torque converter in all gears, increasing wear. Combined with a sealed transmission pan and "lifetime fluid", some people have experienced catastrophic transmission failure. Owners report shift issues when oil begins breaking down beyond 50K miles, hence shifting issues are common. [citation needed]
Smaller parts and a hydraulic circuit with fewer components allow the transmission to maintain the same size as the previous LS 430's 6-speed transmission. The aluminum die-cast case is 10 % lighter, yet 30 % more rigid, even with two additional gears and a 22 % greater torque capacity the new transmission weighs 95 kg (209 lb ) or 10 % more ...