What does 7dct transmission mean?

[BethanyAnn]

7dct transmission refers to a 7-speed dual-clutch transmission. DCT Transmission: The main body of a DCT transmission is a manual transmission, which can also be considered an upgraded version of a manual transmission. The DCT transmission has two sets of clutches, primarily responsible for shifting odd-numbered gears and even-numbered gears (including neutral gear), respectively. During operation, these two sets of clutch plates work alternately to complete the upshifting and downshifting tasks of the DCT transmission. Generating significant heat: During the shifting process, the friction plates of the two clutches generate a substantial amount of heat due to intense friction. This is particularly evident when driving in congested urban areas, where frequent stop-and-go conditions occur. The transmission shifts gears more frequently, requiring the vehicle's transmission clutches to work continuously, thus causing the DCT transmission to generate significant heat.

[StAdriel]

I've always found it quite interesting to understand transmission codes. Recently, many people have been asking about 7DCT, which actually refers to a 7-speed dual-clutch transmission. DCT is the abbreviation for Double Clutch Transmission. This type of transmission contains two sets of clutches, controlling odd and even gears respectively. When you're using 3rd gear, the other clutch has already quietly prepared 4th gear, making gear shifts so fast that you can barely feel any power interruption. It's much more responsive than a regular automatic transmission and is particularly fuel-efficient, which is why many sports cars and family vehicles prefer using it. However, it's worth mentioning that during low-speed crawling in traffic jams, you might occasionally feel a slight jerk underfoot, which is characteristic of this type of transmission.

[LaCarmen]

As someone who frequently interacts with various car models, I've noticed many friends don't quite understand the letter-number combinations on transmissions. Simply put, 7DCT refers to a dual-clutch structure at its core - one clutch is dedicated to odd-numbered gears like 1, 3, 5, 7, while the other handles even-numbered gears 2, 4, 6. The system can predict your next move and pre-select gears, making gear shifts exceptionally crisp and decisive. Volkswagen's DSG and Ford's PowerShift are essentially this same technology. With mechanical architecture similar to manual transmissions, it achieves high transmission efficiency, helping vehicles save significant fuel. This type of transmission may show slight hesitation during stop-and-go city driving, but its advantages truly shine on highways.

[StEliza]

When talking about transmission abbreviations, 7DCT refers to a 7-speed dual-clutch transmission. The most notable feature of this transmission is that two clutches work in tandem. While you're driving, the computer always secretly prepares the next gear, making gear shifts lightning-fast. Compared to the power loss in traditional AT torque converters, DCT's direct mechanical connection is more efficient, often resulting in lower fuel consumption for vehicles of the same displacement. However, it's important to note the distinction between dry and wet clutches: wet clutches are immersed in oil for better heat dissipation and can handle higher torque, while dry clutches are simpler and lighter but prone to overheating in stop-and-go traffic due to frequent partial engagement. Major automakers are continuously optimizing their software to reduce jerky shifts.