What is the difference between dry and wet transmissions?
2 Answers
Dry transmission and wet transmission differ in their intermediate medium and response speed. Below are the specific explanations for these differences: Intermediate medium differs: The intermediate medium of a dry transmission is air; the intermediate medium of a wet transmission is oil. Response speed differs: Dry transmission transmits power through direct contact of metal plates; wet transmission requires oil as an intermediary, from the acceleration of the driving plate to the increase in centrifugal force of the oil, and then to the acceleration of the driven plate. The structure of a wet clutch is more complex, and a more complex structure means higher energy loss. Therefore, the transmission efficiency of a wet dual-clutch transmission is lower, occupying more engine power, and under unchanged other factors, fuel consumption will be higher.
I've always driven manual transmission cars, but I have some insights about dry and wet clutches. Dry clutches don't have oil cooling, so they're lighter and faster, making gear shifts quick and enjoyable in city driving. However, they're prone to overheating in summer traffic jams, with higher risks of burning out. Wet clutches are immersed in oil, offering much better lubrication, less heat buildup, and greater durability, making them ideal for long trips or mountain roads. Wet clutches are usually found in more expensive models, like high-end SUVs, but require oil changes during maintenance, which costs more. Personally, I'd recommend a dry clutch if you're mostly driving fast in the city, but for frequent heavy loads or highway driving, a wet clutch offers more peace of mind. Don't underestimate the importance of clutch type—choosing wrong can affect both lifespan and safety.
