What are the differences between dry and wet dual-clutch transmissions?
1 Answers
The differences between dry and wet dual-clutch transmissions can be categorized into three aspects: transmission efficiency, response speed, and torque capacity. Additional information: 1. Transmission efficiency: From the structure of the clutch, it can be observed that the wet clutch has a more complex design. A more complex structure implies higher energy loss, resulting in lower transmission efficiency for wet dual-clutch transmissions. This means they consume more engine power, and under unchanged conditions, it leads to higher fuel consumption. 2. Response speed: Dry clutches transmit power through direct contact of metal plates, providing more immediate power transfer. When the metal plates are pressed together, the transmission ratio increases, delivering direct and noticeable effects. In contrast, wet clutches use oil as an intermediary, involving a process where the driving plate accelerates, increasing the centrifugal force of the oil, which then accelerates the driven plate. This additional step results in a slightly slower response speed. 3. Torque capacity: The metal friction plates in dry clutches cannot withstand excessive torque. If subjected to significant stress impact, the friction plates can be easily damaged. Therefore, dry clutches are only suitable for vehicles with small-displacement engines and low torque output. Some vehicle models even deliberately limit the engine's torque output in lower gears to adapt to dry clutches and protect the transmission clutch.
