What is the lifespan of Changan's 7-speed wet dual-clutch transmission?

[Brayden]

Changan's 7-speed wet dual-clutch transmission has a lifespan of approximately 20 years or 500,000 kilometers, which is generally equivalent to the lifespan of a car. The actual lifespan can vary significantly depending on individual driving habits. A 7-speed dual-clutch transmission (DCT) is a transmission with seven forward gears, also known as a 7-speed DCT, and it utilizes a wet dual-clutch system. Dual-clutch transmissions differ from conventional automatic transmission systems. The wet dual-clutch transmission features two multi-plate clutches—one large and one small—mounted coaxially within a sealed hydraulic oil chamber. The 7-speed DCT uses hydraulic pressure to engage the clutch. During the process of clutch disengagement and full engagement, it includes a transmission mechanism that controls driving force under relative rotation conditions. Similar to the slip force in automatic transmissions, controlling smaller driving forces is easier under sliding conditions, but continuous engagement pressure is required to maintain the engaged state.