How is the Volkswagen 1.4T Dry Dual-Clutch Transmission?
2 Answers
The Volkswagen 1.4T dry dual-clutch transmission has a simple structure, low cost, and low maintenance expenses, but it transmits less torque compared to wet dual-clutch transmissions. One drawback of dual-clutch transmissions is that they operate more frequently, with longer semi-engagement times than AT transmissions. When driving in congested urban areas with frequent gear shifts, the transmission generates a significant amount of heat. The working principle of a dual-clutch transmission can be simply understood as one clutch corresponding to odd-numbered gears and the other to even-numbered gears. When the vehicle is in one gear, the other clutch and the corresponding next gear are already in a ready state. As soon as the current gear is disengaged, the next gear can be engaged immediately, making the shift speed of dual-clutch transmissions faster than that of conventional automatic or even manual transmissions. The 1.4T models are all equipped with dry dual-clutch transmissions, with only some top-tier 1.4T models featuring wet dual-clutch transmissions. During power shifts in traffic jams or at low speeds, the dual-clutch module does not fully engage, remaining in a semi-engaged state, which leads to high temperatures during power shifts. However, there is now another driving mode for power shift vehicles. In traffic jams or at low speeds, drivers can opt for manual mode. By limiting frequent gear shifts, this can resolve the issue of driving jerkiness during power shifts and also prevent the vehicle's transmission from overheating. Dual-clutch transmissions offer advantages such as high torque capacity, efficient power transfer, rapid shifting, and low energy loss, resulting in lower fuel consumption levels.
I've driven a Volkswagen 1.4T dry dual-clutch car for several years. As an urban commuter, I find the car has ample power with quick acceleration, especially making highway overtaking effortless. The fuel consumption is impressively low, averaging only 6L per 100km, saving money and being eco-friendly. However, the dry dual-clutch doesn't perform as well in traffic jams, occasionally showing jerkiness during starts, particularly in city areas with frequent traffic lights where the ride feels less smooth. Long-term low-speed driving may cause the transmission to overheat, leading to minor issues. Maintenance is relatively straightforward, with regular transmission oil changes helping to extend its lifespan. Overall, it offers high value for money and suits those who frequently drive on highways, while city drivers might prefer a wet dual-clutch to minimize hassles.
