![]() A ‘true sequential’ can be even faster, but a motorsports gearbox has a lot of negatives: cost, maintenance, and availability just to name a few.Īnother key element is the elimination of the clutch pedal. It cuts down the time that the turbo doesn’t receive exhaust gas flow, which, in layman terms, helps the engine remain in boost. This is a big deal when it comes to cars that are turbocharged. Some DCTs can shift a gear in just 40 milliseconds compared to the 500 milliseconds that a typical human takes while driving in anger. There are quite a few pros to a DCT compared to a traditional manual transmission. If that’s not enough for you though, Exedy does sell upgraded clutch packs. What that means for you and me is that it enables the clutch packs to handle more torque. The clutch packs are internal, instead of being external like in a manual transmission and are either ‘wet’ or ‘dry.’ Enthusiasts would be most interested in ‘wet’ gearboxes, as the clutch packs are bathed in oil to cool them down. The shifts are all electronically controlled and do not require input from the driver, but can be actuated with paddles or a lever. There are two input shafts, with one fitting inside the other. One transmission and clutch control the even numbered gears and the other controls the odd numbered gears. Imagine you have two transmissions with two separate clutches. Let’s break down what a DCT is in the simplest way. ![]() This enables the vehicle’s speed to be easily controlled when moving slowly - for example when manoeuvring or in stop-and-go traffic - and hill-starts are also made easier,” stated the press release.What’s the latest buzz in the racing community? “It’s got the shifting speed of a sequential, with the maintenance and reliability of an OEM gearbox.” That’s right, we are talking about DCT or dual-clutch transmissions! I’ll shed some light on what the heck they even are, pros, cons, and some of the parts you’ll need to put one in your race car. A creep function has been added to the wet clutch, as is usual for automatic transmission with a torque converter. ![]() "Duonic" features a non-wearing wet clutch, which lowers maintenance costs by eliminating the need to replace worn clutch discs. “ The P-function ensures safe parking by preventing the vehicle from rolling away. ![]() This include a P-function (for parking) and a creep function (this facilitates slow parking maneuvers). It uses a wet clutch and offers multiple functions. The selector lever allows automatic or manual gearshift mode to be selected,” stated the press release.ĭubbed Duonic transmission (or M038S6, if you like), the gearbox has six forward gears and a reverse gear. “ As with a fully automatic transmission it is a two-pedal system, there is an accelerator pedal, a brake pedal and a selector lever. Now, the dual-clutch gearbox has made its way into the trucks segment, with Daimler’s Fuso brand offering the first dual-clutch transmission for this type of vehicle. In addition to that, they also provide an increase for the level of driving safety, as the power is continuously transmitted to the driven wheels. These no longer come with the drawbacks of the classic automatic transmissions that use torque converters (fuel consumption and emissions increase, as well as longer shifting times), while offering an improved comfort for the driver. The dual clutch transmissions are one of the most important technological features to have surfaced in the last few years.
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