What is the difference between dry dual-clutch and wet dual-clutch?
2 Answers
The differences between dry dual-clutch and wet dual-clutch: 1. Different cooling methods: Dry dual-clutch uses air cooling for heat dissipation, relying on wind to drive away heat; Wet dual-clutch is soaked in oil, resulting in higher cooling efficiency. 2. Different operation methods: Dry clutch is a manual transmission friction plate clutch, with high mechanical transmission efficiency, relatively complex operation, and high failure rate; Wet clutch is an automatic transmission oil-immersed friction plate clutch, with low mechanical transmission efficiency, easy operation, and low failure rate. Precautions: 1. Dual-clutch transmissions are not suitable for frequent starts, long-term low-speed driving, or stop-and-go traffic, as they are prone to overheating, leading to failures. Once the onboard computer issues a warning, the vehicle must be stopped immediately to cool the transmission. 2. In unavoidable traffic congestion, try to use low gears for following, including manual mode or S mode, which can greatly avoid excessive clutch temperatures caused by the transmission's shifting mechanism constantly changing.
The core difference between dry and wet dual-clutch transmissions lies in the cooling method. The dry type's clutch plates are not immersed in oil and rely on air for cooling, making them lighter and more fuel-efficient, suitable for urban daily driving. However, they are prone to overheating, causing shudder or failure in stop-and-go traffic. The wet type is entirely immersed in oil for cooling, offering better heat dissipation and high-temperature resistance, making it ideal for high-speed or track driving with smoother gear shifts. However, due to the additional oil pump system, it adds weight and slightly increases fuel consumption. From a durability perspective, dry types have lower maintenance costs but shorter lifespans, while wet types are more robust but require regular clutch oil changes, adding to costs. Personally, the choice depends on driving habits: dry types are worry-free for city commuting, while wet types are more reliable for frequent long-distance trips or speed enthusiasts, as overheating issues prioritize safety.
