Are All Dual-Clutch Transmissions Automatic?
2 Answers
All dual-clutch transmissions are automatic. The specific introduction about dual-clutch is as follows: 1. Dual-clutch is a mechanical automatic transmission: it does not have a clutch pedal. 2. Dual-clutch transmissions are different from ordinary automatic transmission systems: they are based on manual transmissions but belong to automatic transmissions, providing both the flexibility of manual transmissions and the comfort of automatic transmissions, as well as uninterrupted power output. 3. Automatic transmissions do not require the driver to shift gears manually: the vehicle will automatically select the appropriate gear based on the driving speed and traffic conditions.
Just chatted with my mechanic about this the other day. Dual-clutch transmissions (DCT) are technically automatic since you don't need to press a clutch pedal, but their structure is completely different from traditional automatics. Conventional automatics use torque converters for power transfer, while DCTs essentially combine two manual transmissions, using computer-controlled clutch packs to shift gears. When idling in Drive (D) mode with brakes pressed at red lights, the clutch actually remains partially engaged, which can cause overheating over time. That's why switching to manual mode or Sport (S) mode during frequent stop-and-go traffic better protects the transmission. My colleague's dry-clutch DCT previously developed shuddering issues from prolonged D-mode idling, though newer wet-clutch DCT designs have significantly improved this.
