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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.
Shift time refers to the time interval between gear changes in a transmission. This interval is the time in which power delivery is transferred to the next selected gear, and engine speed is reduced or increased to synchronize the speed of the next gear. Shift time is usually in reference to motor vehicles, but can apply to any gearbox.
Unlike previous Golfs which featured a 7-speed dual-clutch gearbox (DSG), this engine will be paired with a traditional 8-speed torque converter automatic. The transmission choice is due in part to the specific engine calibration (and automatic transmission combination) developed to meet Australia's outdated Euro 5 emissions regulations ...
The most common design of automatic transmissions is the hydraulic automatic, which typically uses planetary gearsets that are operated using hydraulics. [ 11 ] [ 12 ] The transmission is connected to the engine via a torque converter (or a fluid coupling prior to the 1960s), instead of the friction clutch used by most manual transmissions and ...
Basically there are two types of motor vehicle transmissions: Manual – the driver has to perform each gear change using a manually operated clutch; Automatic – once placed in drive (or any other 'automatic' selector position), it automatically selects the gear ratio dependent on engine speed and load
In 2010, the Mitsubishi Fuso 6-speed Duonic transmission became the first DCT to be used in a truck. [53] The 2015 Acura TLX uses a torque converter (a device typically used in hydraulic automatic transmissions) paired with its 8-speed DCT. The purpose of the torque converter is to improve the smoothness of low-speed driving, through the ...
Mercedes-AMG developed the 7-speed MCT "Multi Clutch Technology" planetary automatic transmission. The MCT transmission is essentially the 7G-Tronic automatic transmission without a torque converter. Instead of a torque converter, it uses a compact wet startup clutch to launch the car from a stop and also supports computer-controlled double ...
The Ford PowerShift are 6 and 7-speed dual-clutch automatic transmissions, produced for the Ford Motor Company. [1] The 6 speed PowerShift gearboxes were built by Getrag Ford Transmissions, a joint-venture with Getrag,. [2] PowerShift improves fuel efficiency by as much as 10 percent when compared to a conventional automatic transmission. [1]
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